Fe–Zn phases

8 phases (tier A 4, tier C 2, liquid 1, needs_review 1); 8 stable in a calculated diagram. Structure types are assigned only when the stored evidence supports an assignment under the stated tier rules (tier A: standard phase name; tier B: unique Materials Project + OQMD on-hull match, DFT-supported; tier C: one structure stated by the assessment's crystallographic table, assessor-stated); other phases list candidates and are marked needs_review. Stability is from phase diagrams calculated with pycalphad from the SGTE binary collection (evidence class: model).

Data: interactive registry · full JSON · Fe–Zn system page · Markdown · field reference

Phases of the Fe–Zn system (8)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BCC_A2 phase:fe-zn:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–1841.7 K, x(Zn) 0–0.46428	14	5
FCC_A1 phase:fe-zn:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 1084.45–1701.07 K, x(Zn) 0–0.40105	0	5
FE3ZN7_D82 phase:fe-zn:fe3zn7-d82	Cu5Zn8 · D8_2 · cI52 · I-43m (217)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–1056.68 K, x(Zn) 0.66339–0.81554	44	5
FEZN10 phase:fe-zn:fezn10	FeZn10 · hP632 · P6_3/mmc (194)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 5 of 5 calculated diagram(s): 300–945.49 K, x(Zn) 0.85904–0.92268	56	5
FEZN13 phase:fe-zn:fezn13	CoZn13 · mC28 · C2/m (12)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 5 of 5 calculated diagram(s): 300–805.07 K, x(Zn) 0.92788–0.94125	45	5
FEZN4 phase:fe-zn:fezn4		needs_review	stable in 5 of 5 calculated diagram(s): 300–824.1 K, x(Zn) 0.74689–0.84076	21	5
HCP_A3 phase:fe-zn:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–692.98 K, x(Zn) 0.99932–1	15	5
LIQUID phase:fe-zn:liquid	liquid	liquid	stable in 5 of 5 calculated diagram(s): 300.36–2500 K, x(Zn) 0–1	58	5

BCC_A2 (Fe–Zn)

Id: phase:fe-zn:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; tier A: standard phase name; confidence high
Stability: stable in 5 of 5 calculated diagram(s): 300–1841.7 K, x(Zn) 0–0.46428
Literature: 14 values (14 accepted) from 3 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:fe-zn:bcc-a2
paper: paper:10.1016/j.calphad.2009.01.002:(αFe), paper:10.1016/s0925-8388(01)01273-7:α-Fe(b.c.c.), paper:10.2298/jmmb1101001t:(αFe)
tdb: tdb:FeZn-00Reu-LB.tdb:BCC_A2, tdb:FeZn-01Su.tdb:BCC_A2, tdb:FeZn-05Su.tdb:BCC_A2, tdb:FeZn-09Xio.tdb:BCC_A2, tdb:FeZn-11Tan.tdb:BCC_A2

TDB models of BCC_A2 (5): PHASE and CONSTITUENT statements as written

FeZn-00Reu-LB.tdb: BCC_A2, type code %B, sha256 d4504e582665577a…

31: PHASE BCC_A2 %B 2 1 3 !
32: CONST BCC_A2 : FE% ZN : VA : !

FeZn-01Su.tdb: BCC_A2, type code %B, sha256 7ec69901e59741d2…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : FE% ZN : VA : !

FeZn-05Su.tdb: BCC_A2, type code %B, sha256 7315dc671e2b7ec8…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : FE% ZN : VA : !

FeZn-09Xio.tdb: BCC_A2, type code %B, sha256 adfbe318ba501357…

34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : FE% ZN : VA : !

FeZn-11Tan.tdb: BCC_A2, type code %B, sha256 fd6a097e34a77fe3…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : FE% ZN : VA : !

Example references (6 of 6; assessments first):

doi:10.1016/j.calphad.2009.01.002 Wei Xiong, Yi Kong, Yong Du, Zi-Kui Liu, Malin Selleby, Wei-Hua Sun, Thermodynamic investigation of the galvanizing systems, I: Refinement of the thermodynamic description for the Fe–Zn system, Calphad 33, 433-440 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/S0925-8388(01)01273-7 X. Su, N.-Y. Tang, J.M. Toguri, J. Alloys Compd., 325, 129-36(2001).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.2298/JMMB1101001T Y. Tang, X. Yuan, Y. Du, W. Xiong, J. Mining Metall. B, 47, 1-10(2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2004.12.031 Xuping Su, Fucheng Yin, Zhi Li, Nai-Yong Tang, Manxiu Zhao, Thermodynamic calculation of the Fe–Zn–Si system, Journal of Alloys and Compounds 396, 156-163 (2005).
assessment that models this phase
doi:10.1361/105497100770339905 G. Reumont, P. Perrot, J. M. Fiorani, J. Hertz, Thermodynamic assessment of the Fe-Zn system, JPE 21, 371-378 (2000).
assessment that models this phase
doi:10.1515/ijmr-1980-710303 P.J. Gellings, G. Gierman, D. Koster, J. Kuit, Z. Metallkd., 71 (1980) 150.
cited as the source of values for this phase

FCC_A1 (Fe–Zn)

Id: phase:fe-zn:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stability: stable in 5 of 5 calculated diagram(s): 1084.45–1701.07 K, x(Zn) 0–0.40105
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:fe-zn:fcc-a1
tdb: tdb:FeZn-00Reu-LB.tdb:FCC_A1, tdb:FeZn-01Su.tdb:FCC_A1, tdb:FeZn-05Su.tdb:FCC_A1, tdb:FeZn-09Xio.tdb:FCC_A1, tdb:FeZn-11Tan.tdb:FCC_A1

TDB models of FCC_A1 (5): PHASE and CONSTITUENT statements as written

FeZn-00Reu-LB.tdb: FCC_A1, type code %A, sha256 d4504e582665577a…

26: PHASE FCC_A1 %A 2 1 1 !
27: CONST FCC_A1 : FE% ZN : VA : !

FeZn-01Su.tdb: FCC_A1, type code %A, sha256 7ec69901e59741d2…

30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : FE% ZN : VA : !

FeZn-05Su.tdb: FCC_A1, type code %A, sha256 7315dc671e2b7ec8…

30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : FE% ZN : VA : !

FeZn-09Xio.tdb: FCC_A1, type code %A, sha256 adfbe318ba501357…

29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : FE% ZN : VA : !

FeZn-11Tan.tdb: FCC_A1, type code %A, sha256 fd6a097e34a77fe3…

30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : FE% ZN : VA : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2009.01.002 Wei Xiong, Yi Kong, Yong Du, Zi-Kui Liu, Malin Selleby, Wei-Hua Sun, Thermodynamic investigation of the galvanizing systems, I: Refinement of the thermodynamic description for the Fe–Zn system, Calphad 33, 433-440 (2009).
assessment that models this phase
doi:10.1016/j.jallcom.2004.12.031 Xuping Su, Fucheng Yin, Zhi Li, Nai-Yong Tang, Manxiu Zhao, Thermodynamic calculation of the Fe–Zn–Si system, Journal of Alloys and Compounds 396, 156-163 (2005).
assessment that models this phase
doi:10.1016/S0925-8388(01)01273-7 X. Su, N.-Y. Tang, J.M. Toguri, J. Alloys Compd., 325, 129-36(2001).
assessment that models this phase
doi:10.1361/105497100770339905 G. Reumont, P. Perrot, J. M. Fiorani, J. Hertz, Thermodynamic assessment of the Fe-Zn system, JPE 21, 371-378 (2000).
assessment that models this phase
doi:10.2298/JMMB1101001T Y. Tang, X. Yuan, Y. Du, W. Xiong, J. Mining Metall. B, 47, 1-10(2011).
assessment that models this phase

FE3ZN7_D82 (Fe–Zn)

Id: phase:fe-zn:fe3zn7-d82; status assigned
Structure: Cu5Zn8 · D8_2 · cI52 · I-43m (217); type st:d8-2-cu5zn8-ci52; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in FeZn-00Reu-LB.tdb also describes the disordered state
Caveat: partitioned order/disorder model in FeZn-09Xio.tdb also describes the disordered state
Caveat: partitioned order/disorder model in FeZn-11Tan.tdb also describes the disordered state
Stability: stable in 5 of 5 calculated diagram(s): 300–1056.68 K, x(Zn) 0.66339–0.81554
Literature: 44 values (44 accepted) from 3 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:fe-zn:fe3zn7-d82
paper: paper:10.1016/j.calphad.2009.01.002:Γ, paper:10.1016/s0925-8388(01)01273-7:Γ, paper:10.2298/jmmb1101001t:Γ
system_alias: system_alias:fe-zn:Gamma
tdb: tdb:FeZn-00Reu-LB.tdb:FE3ZN7_D82, tdb:FeZn-01Su.tdb:FE3ZN7_D82, tdb:FeZn-05Su.tdb:FE3ZN7_D82, tdb:FeZn-09Xio.tdb:FE3ZN7_D82, tdb:FeZn-11Tan.tdb:FE3ZN7_D82

TDB models of FE3ZN7_D82 (5): PHASE and CONSTITUENT statements as written

FeZn-00Reu-LB.tdb: FE3ZN7_D82, type code %, sha256 d4504e582665577a…

42: PHASE FE3ZN7_D82 % 2 0.3 0.7 !
43: CONST FE3ZN7_D82 : FE% ZN : FE ZN% : !

FeZn-01Su.tdb: FE3ZN7_D82, type code %, sha256 7ec69901e59741d2…

46: PHASE FE3ZN7_D82 % 2 10 16 !
47: CONST FE3ZN7_D82 : FE ZN : ZN : !

FeZn-05Su.tdb: FE3ZN7_D82, type code %, sha256 7315dc671e2b7ec8…

46: PHASE FE3ZN7_D82 % 2 10 16 !
47: CONST FE3ZN7_D82 : FE ZN : ZN : !

FeZn-09Xio.tdb: FE3ZN7_D82, type code %, sha256 adfbe318ba501357…

45: PHASE FE3ZN7_D82 % 4 0.154 0.154 0.231 0.461 !
46: CONST FE3ZN7_D82 : FE ZN : FE ZN : FE ZN : ZN : !

FeZn-11Tan.tdb: FE3ZN7_D82, type code %, sha256 fd6a097e34a77fe3…

46: PHASE FE3ZN7_D82 % 4 0.154 0.154 0.231 0.461 !
47: CONST FE3ZN7_D82 : FE ZN : FE ZN : FE ZN : ZN : !

Example references (7 of 7; assessments first):

doi:10.1016/j.calphad.2009.01.002 Wei Xiong, Yi Kong, Yong Du, Zi-Kui Liu, Malin Selleby, Wei-Hua Sun, Thermodynamic investigation of the galvanizing systems, I: Refinement of the thermodynamic description for the Fe–Zn system, Calphad 33, 433-440 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/S0925-8388(01)01273-7 X. Su, N.-Y. Tang, J.M. Toguri, J. Alloys Compd., 325, 129-36(2001).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.2298/JMMB1101001T Y. Tang, X. Yuan, Y. Du, W. Xiong, J. Mining Metall. B, 47, 1-10(2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2004.12.031 Xuping Su, Fucheng Yin, Zhi Li, Nai-Yong Tang, Manxiu Zhao, Thermodynamic calculation of the Fe–Zn–Si system, Journal of Alloys and Compounds 396, 156-163 (2005).
assessment that models this phase
doi:10.1361/105497100770339905 G. Reumont, P. Perrot, J. M. Fiorani, J. Hertz, Thermodynamic assessment of the Fe-Zn system, JPE 21, 371-378 (2000).
assessment that models this phase
doi:10.1515/ijmr-1980-710303 P.J. Gellings, G. Gierman, D. Koster, J. Kuit, Z. Metallkd., 71 (1980) 150.
cited as the source of values for this phase
doi:10.1006/jssc.2000.8626 Claude H.E. Belin, Renaud C.H. Belin, Synthesis and Crystal Structure Determinations in the Γ and δ Phase Domains of the Iron–Zinc System: Electronic and Bonding Analysis of Fe13Zn39 and FeZn10, a Subtle Deviation from the Hume–Rothery Standard?, Journal of Solid State Chemistry 151, 85-95 (2000).
cited as the source of values for this phase

FEZN10 (Fe–Zn)

Id: phase:fe-zn:fezn10; status assigned
Structure: FeZn10 · hP632 · P6_3/mmc (194); type st:fezn10-hp632; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system
Stability: stable in 5 of 5 calculated diagram(s): 300–945.49 K, x(Zn) 0.85904–0.92268
Literature: 56 values (56 accepted) from 4 papers
Interactive: phase registry entry

Names (11): corpus: corpus:phase:fe-zn:fezn10
paper: paper:10.1016/j.calphad.2009.01.002:δ, paper:10.1016/s0925-8388(01)01273-7:δ, paper:10.1361/105497100770339905:δ1, paper:10.2298/jmmb1101001t:δ
system_alias: system_alias:fe-zn:delta
tdb: tdb:FeZn-00Reu-LB.tdb:FEZN10, tdb:FeZn-01Su.tdb:FEZN10, tdb:FeZn-05Su.tdb:FEZN10, tdb:FeZn-09Xio.tdb:FEZN10, tdb:FeZn-11Tan.tdb:FEZN10

TDB models of FEZN10 (5): PHASE and CONSTITUENT statements as written

FeZn-00Reu-LB.tdb: FEZN10, type code %, sha256 d4504e582665577a…

52: PHASE FEZN10 % 2 0.125 0.875 !
53: CONST FEZN10 : FE% ZN : FE ZN% : !

FeZn-01Su.tdb: FEZN10, type code %, sha256 7ec69901e59741d2…

56: PHASE FEZN10 % 3 2 4 20 !
57: CONST FEZN10 : FE : FE ZN : ZN : !

FeZn-05Su.tdb: FEZN10, type code %, sha256 7315dc671e2b7ec8…

56: PHASE FEZN10 % 3 2 4 20 !
57: CONST FEZN10 : FE : FE ZN : ZN : !

FeZn-09Xio.tdb: FEZN10, type code %, sha256 adfbe318ba501357…

55: PHASE FEZN10 % 3 0.058 0.18 0.762 !
56: CONST FEZN10 : FE : FE ZN : ZN : !

FeZn-11Tan.tdb: FEZN10, type code %, sha256 fd6a097e34a77fe3…

56: PHASE FEZN10 % 3 0.058 0.18 0.762 !
57: CONST FEZN10 : FE : FE ZN : ZN : !

Example references (9 of 9; assessments first):

doi:10.1016/j.calphad.2009.01.002 Wei Xiong, Yi Kong, Yong Du, Zi-Kui Liu, Malin Selleby, Wei-Hua Sun, Thermodynamic investigation of the galvanizing systems, I: Refinement of the thermodynamic description for the Fe–Zn system, Calphad 33, 433-440 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/S0925-8388(01)01273-7 X. Su, N.-Y. Tang, J.M. Toguri, J. Alloys Compd., 325, 129-36(2001).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1361/105497100770339905 G. Reumont, P. Perrot, J. M. Fiorani, J. Hertz, Thermodynamic assessment of the Fe-Zn system, JPE 21, 371-378 (2000).
assessment that models this phase; reports values for this phase
doi:10.2298/JMMB1101001T Y. Tang, X. Yuan, Y. Du, W. Xiong, J. Mining Metall. B, 47, 1-10(2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2004.12.031 Xuping Su, Fucheng Yin, Zhi Li, Nai-Yong Tang, Manxiu Zhao, Thermodynamic calculation of the Fe–Zn–Si system, Journal of Alloys and Compounds 396, 156-163 (2005).
assessment that models this phase
doi:10.1006/jssc.2000.8626 Claude H.E. Belin, Renaud C.H. Belin, Synthesis and Crystal Structure Determinations in the Γ and δ Phase Domains of the Iron–Zinc System: Electronic and Bonding Analysis of Fe13Zn39 and FeZn10, a Subtle Deviation from the Hume–Rothery Standard?, Journal of Solid State Chemistry 151, 85-95 (2000).
cited as the source of values for this phase
doi:10.1515/ijmr-1980-710303 P.J. Gellings, G. Gierman, D. Koster, J. Kuit, Z. Metallkd., 71 (1980) 150.
cited as the source of values for this phase
doi:10.1002/srin.198004874 Peter Reutner, Hans-Jürgen Engeil, Elektrochemische Untersuchungen über die Thermodynamik der intermetallischen Phasen des Systems Esen-Znk, Archiv für das Eisenhüttenwesen 51, 457-462 (1980).
cited as the source of values for this phase
doi:10.1016/0040-6031(88)87199-5 Stephan Petersen, Philip J. Spencer, Klaus Hack, A thermodynamic evaluation of the iron-zinc system, Thermochimica Acta 129, 77-87 (1988).
cited as the source of values for this phase

FEZN13 (Fe–Zn)

Id: phase:fe-zn:fezn13; status assigned
Structure: CoZn13 · mC28 · C2/m (12); type st:cozn13-mc28; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system
Stability: stable in 5 of 5 calculated diagram(s): 300–805.07 K, x(Zn) 0.92788–0.94125
Literature: 45 values (45 accepted) from 4 papers
Interactive: phase registry entry

Names (11): corpus: corpus:phase:fe-zn:fezn13
paper: paper:10.1016/j.calphad.2009.01.002:ζ, paper:10.1016/s0925-8388(01)01273-7:ζ, paper:10.1361/105497100770339905:ζ, paper:10.2298/jmmb1101001t:ζ
system_alias: system_alias:fe-zn:zeta
tdb: tdb:FeZn-00Reu-LB.tdb:FEZN13, tdb:FeZn-01Su.tdb:FEZN13, tdb:FeZn-05Su.tdb:FEZN13, tdb:FeZn-09Xio.tdb:FEZN13, tdb:FeZn-11Tan.tdb:FEZN13

TDB models of FEZN13 (5): PHASE and CONSTITUENT statements as written

FeZn-00Reu-LB.tdb: FEZN13, type code %, sha256 d4504e582665577a…

57: PHASE FEZN13 % 2 0.072 0.928 !
58: CONST FEZN13 : FE% ZN : FE ZN% : !

FeZn-01Su.tdb: FEZN13, type code %, sha256 7ec69901e59741d2…

61: PHASE FEZN13 % 2 1 13 !
62: CONST FEZN13 : FE : ZN : !

FeZn-05Su.tdb: FEZN13, type code %, sha256 7315dc671e2b7ec8…

61: PHASE FEZN13 % 2 1 13 !
62: CONST FEZN13 : FE : ZN : !

FeZn-09Xio.tdb: FEZN13, type code %, sha256 adfbe318ba501357…

60: PHASE FEZN13 % 3 0.072 0.856 0.072 !
61: CONST FEZN13 : FE VA : ZN : ZN VA : !

FeZn-11Tan.tdb: FEZN13, type code %, sha256 fd6a097e34a77fe3…

61: PHASE FEZN13 % 3 0.072 0.856 0.072 !
62: CONST FEZN13 : FE VA : ZN : ZN VA : !

Example references (9 of 9; assessments first):

doi:10.1016/j.calphad.2009.01.002 Wei Xiong, Yi Kong, Yong Du, Zi-Kui Liu, Malin Selleby, Wei-Hua Sun, Thermodynamic investigation of the galvanizing systems, I: Refinement of the thermodynamic description for the Fe–Zn system, Calphad 33, 433-440 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/S0925-8388(01)01273-7 X. Su, N.-Y. Tang, J.M. Toguri, J. Alloys Compd., 325, 129-36(2001).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1361/105497100770339905 G. Reumont, P. Perrot, J. M. Fiorani, J. Hertz, Thermodynamic assessment of the Fe-Zn system, JPE 21, 371-378 (2000).
assessment that models this phase; reports values for this phase
doi:10.2298/JMMB1101001T Y. Tang, X. Yuan, Y. Du, W. Xiong, J. Mining Metall. B, 47, 1-10(2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2004.12.031 Xuping Su, Fucheng Yin, Zhi Li, Nai-Yong Tang, Manxiu Zhao, Thermodynamic calculation of the Fe–Zn–Si system, Journal of Alloys and Compounds 396, 156-163 (2005).
assessment that models this phase
doi:10.1007/bf02830333 Oswald N. C. Uwakweh, Zhentong Liu, Aszetta Jordan, Bryan Chakoumakos, Stephen Spooner, Philip Maziasz, Neutron diffraction and phase evolution of the mechanically alloyed intermetallic compound ζ-FeZn13, Metall Mater Trans A 31, 2739-2745 (2000).
cited as the source of values for this phase
doi:10.1002/srin.198004874 Peter Reutner, Hans-Jürgen Engeil, Elektrochemische Untersuchungen über die Thermodynamik der intermetallischen Phasen des Systems Esen-Znk, Archiv für das Eisenhüttenwesen 51, 457-462 (1980).
cited as the source of values for this phase
doi:10.1515/ijmr-1980-710303 P.J. Gellings, G. Gierman, D. Koster, J. Kuit, Z. Metallkd., 71 (1980) 150.
cited as the source of values for this phase
doi:10.1016/0040-6031(88)87199-5 Stephan Petersen, Philip J. Spencer, Klaus Hack, A thermodynamic evaluation of the iron-zinc system, Thermochimica Acta 129, 77-87 (1988).
cited as the source of values for this phase

FEZN4 (Fe–Zn)

Id: phase:fe-zn:fezn4; status needs_review
No structure assigned. Why: assessment_declared_compound_differs_from_site_ratios; no_structure_token; off_stoichiometric_model
Candidate (literature_printed): Fe11Zn40 · cF408 — printed with a label mapped to this phase
Candidate (sgte_mmc2): Fe11Zn40 · cF408 · F-43m (216) — Hallstedt 2025 mmc2 row for FEZN4: FeZn4 (Gamma_1)
Candidate (tdb_comment): Fe11Zn40 · cF408 · F-43m — FeZn-00Reu-LB.tdb: 'Prototype Fe11Zn40 (cF408, F-43m), Gamma_1'
Candidate (tdb_comment): Fe11Zn40 · cF408 · F-43m — FeZn-01Su.tdb: 'Prototype Fe11Zn40 (cF408, F-43m), Gamma_1'
Candidate (tdb_comment): Fe11Zn40 · cF408 · F-43m — FeZn-05Su.tdb: 'Prototype Fe11Zn40 (cF408, F-43m), Gamma_1'
Candidate (tdb_comment): Fe11Zn40 · cF408 · F-43m — FeZn-09Xio.tdb: 'Prototype Fe11Zn40 (cF408, F-43m), Gamma_1'
Candidate (tdb_comment): Fe11Zn40 · cF408 · F-43m — FeZn-11Tan.tdb: 'Prototype Fe11Zn40 (cF408, F-43m), Gamma_1'
Stability: stable in 5 of 5 calculated diagram(s): 300–824.1 K, x(Zn) 0.74689–0.84076
Literature: 21 values (21 accepted) from 4 papers
Interactive: phase registry entry

Names (11): corpus: corpus:phase:fe-zn:fezn4
paper: paper:10.1016/j.calphad.2009.01.002:Γ1, paper:10.1016/s0925-8388(01)01273-7:Γ1, paper:10.1361/105497100770339905:Γ1, paper:10.2298/jmmb1101001t:Γ1
system_alias: system_alias:fe-zn:Gamma1
tdb: tdb:FeZn-00Reu-LB.tdb:FEZN4, tdb:FeZn-01Su.tdb:FEZN4, tdb:FeZn-05Su.tdb:FEZN4, tdb:FeZn-09Xio.tdb:FEZN4, tdb:FeZn-11Tan.tdb:FEZN4

TDB models of FEZN4 (5): PHASE and CONSTITUENT statements as written

FeZn-00Reu-LB.tdb: FEZN4, type code %, sha256 d4504e582665577a…

47: PHASE FEZN4 % 2 0.25 0.75 !
48: CONST FEZN4 : FE% ZN : FE ZN% : !

FeZn-01Su.tdb: FEZN4, type code %, sha256 7ec69901e59741d2…

51: PHASE FEZN4 % 2 14 12 !
52: CONST FEZN4 : FE ZN : ZN : !

FeZn-05Su.tdb: FEZN4, type code %, sha256 7315dc671e2b7ec8…

51: PHASE FEZN4 % 2 14 12 !
52: CONST FEZN4 : FE ZN : ZN : !

FeZn-09Xio.tdb: FEZN4, type code %, sha256 adfbe318ba501357…

50: PHASE FEZN4 % 3 0.137 0.118 0.745 !
51: CONST FEZN4 : FE : FE ZN : ZN : !

FeZn-11Tan.tdb: FEZN4, type code %, sha256 fd6a097e34a77fe3…

51: PHASE FEZN4 % 3 0.137 0.118 0.745 !
52: CONST FEZN4 : FE : FE ZN : ZN : !

Example references (8 of 8; assessments first):

doi:10.1016/j.calphad.2009.01.002 Wei Xiong, Yi Kong, Yong Du, Zi-Kui Liu, Malin Selleby, Wei-Hua Sun, Thermodynamic investigation of the galvanizing systems, I: Refinement of the thermodynamic description for the Fe–Zn system, Calphad 33, 433-440 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1361/105497100770339905 G. Reumont, P. Perrot, J. M. Fiorani, J. Hertz, Thermodynamic assessment of the Fe-Zn system, JPE 21, 371-378 (2000).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(01)01273-7 X. Su, N.-Y. Tang, J.M. Toguri, J. Alloys Compd., 325, 129-36(2001).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.2298/JMMB1101001T Y. Tang, X. Yuan, Y. Du, W. Xiong, J. Mining Metall. B, 47, 1-10(2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2004.12.031 Xuping Su, Fucheng Yin, Zhi Li, Nai-Yong Tang, Manxiu Zhao, Thermodynamic calculation of the Fe–Zn–Si system, Journal of Alloys and Compounds 396, 156-163 (2005).
assessment that models this phase
doi:10.1002/srin.198004874 Peter Reutner, Hans-Jürgen Engeil, Elektrochemische Untersuchungen über die Thermodynamik der intermetallischen Phasen des Systems Esen-Znk, Archiv für das Eisenhüttenwesen 51, 457-462 (1980).
cited as the source of values for this phase
doi:10.1016/0040-6031(88)87199-5 Stephan Petersen, Philip J. Spencer, Klaus Hack, A thermodynamic evaluation of the iron-zinc system, Thermochimica Acta 129, 77-87 (1988).
cited as the source of values for this phase
doi:10.1515/ijmr-1980-710303 P.J. Gellings, G. Gierman, D. Koster, J. Kuit, Z. Metallkd., 71 (1980) 150.
cited as the source of values for this phase

HCP_A3 (Fe–Zn)

Id: phase:fe-zn:hcp-a3; status assigned
Structure: Mg · A3 · hP2 · P6_3/mmc (194); type st:a3-mg-hp2; tier A: standard phase name; confidence high
Stability: stable in 5 of 5 calculated diagram(s): 300–692.98 K, x(Zn) 0.99932–1
Literature: 15 values (15 accepted) from 3 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:fe-zn:hcp-a3
paper: paper:10.1016/j.calphad.2009.01.002:(Zn), paper:10.1016/s0925-8388(01)01273-7:Zn(h.c.p.), paper:10.2298/jmmb1101001t:(Zn)
tdb: tdb:FeZn-00Reu-LB.tdb:HCP_A3, tdb:FeZn-01Su.tdb:HCP_A3, tdb:FeZn-05Su.tdb:HCP_A3, tdb:FeZn-09Xio.tdb:HCP_A3, tdb:FeZn-11Tan.tdb:HCP_A3

TDB models of HCP_A3 (5): PHASE and CONSTITUENT statements as written

FeZn-00Reu-LB.tdb: HCP_A3, type code %, sha256 d4504e582665577a…

36: PHASE HCP_A3 % 2 1 0.5 !
37: CONST HCP_A3 : FE ZN : VA : !

FeZn-01Su.tdb: HCP_A3, type code %, sha256 7ec69901e59741d2…

40: PHASE HCP_A3 % 2 1 0.5 !
41: CONST HCP_A3 : FE ZN : VA : !

FeZn-05Su.tdb: HCP_A3, type code %, sha256 7315dc671e2b7ec8…

40: PHASE HCP_A3 % 2 1 0.5 !
41: CONST HCP_A3 : FE ZN : VA : !

FeZn-09Xio.tdb: HCP_A3, type code %, sha256 adfbe318ba501357…

39: PHASE HCP_A3 % 2 1 0.5 !
40: CONST HCP_A3 : FE ZN : VA : !

FeZn-11Tan.tdb: HCP_A3, type code %, sha256 fd6a097e34a77fe3…

40: PHASE HCP_A3 % 2 1 0.5 !
41: CONST HCP_A3 : FE ZN : VA : !

Example references (6 of 6; assessments first):

doi:10.1016/j.calphad.2009.01.002 Wei Xiong, Yi Kong, Yong Du, Zi-Kui Liu, Malin Selleby, Wei-Hua Sun, Thermodynamic investigation of the galvanizing systems, I: Refinement of the thermodynamic description for the Fe–Zn system, Calphad 33, 433-440 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/S0925-8388(01)01273-7 X. Su, N.-Y. Tang, J.M. Toguri, J. Alloys Compd., 325, 129-36(2001).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.2298/JMMB1101001T Y. Tang, X. Yuan, Y. Du, W. Xiong, J. Mining Metall. B, 47, 1-10(2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2004.12.031 Xuping Su, Fucheng Yin, Zhi Li, Nai-Yong Tang, Manxiu Zhao, Thermodynamic calculation of the Fe–Zn–Si system, Journal of Alloys and Compounds 396, 156-163 (2005).
assessment that models this phase
doi:10.1361/105497100770339905 G. Reumont, P. Perrot, J. M. Fiorani, J. Hertz, Thermodynamic assessment of the Fe-Zn system, JPE 21, 371-378 (2000).
assessment that models this phase
doi:10.1515/ijmr-1980-710303 P.J. Gellings, G. Gierman, D. Koster, J. Kuit, Z. Metallkd., 71 (1980) 150.
cited as the source of values for this phase

LIQUID (Fe–Zn)

Id: phase:fe-zn:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 5 of 5 calculated diagram(s): 300.36–2500 K, x(Zn) 0–1
Literature: 58 values (58 accepted) from 3 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:fe-zn:liquid
paper: paper:10.1016/j.calphad.2009.01.002:L, paper:10.1016/s0925-8388(01)01273-7:L, paper:10.2298/jmmb1101001t:L
tdb: tdb:FeZn-00Reu-LB.tdb:LIQUID, tdb:FeZn-01Su.tdb:LIQUID, tdb:FeZn-05Su.tdb:LIQUID, tdb:FeZn-09Xio.tdb:LIQUID, tdb:FeZn-11Tan.tdb:LIQUID

TDB models of LIQUID (5): PHASE and CONSTITUENT statements as written

FeZn-00Reu-LB.tdb: LIQUID, type code %, sha256 d4504e582665577a…

21: PHASE LIQUID:L % 1 1 !
22: CONST LIQUID:L : FE ZN : !

FeZn-01Su.tdb: LIQUID, type code %, sha256 7ec69901e59741d2…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : FE ZN : !

FeZn-05Su.tdb: LIQUID, type code %, sha256 7315dc671e2b7ec8…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : FE ZN : !

FeZn-09Xio.tdb: LIQUID, type code %, sha256 adfbe318ba501357…

24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : FE ZN : !

FeZn-11Tan.tdb: LIQUID, type code %, sha256 fd6a097e34a77fe3…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : FE ZN : !

Example references (6 of 6; assessments first):

doi:10.1016/j.calphad.2009.01.002 Wei Xiong, Yi Kong, Yong Du, Zi-Kui Liu, Malin Selleby, Wei-Hua Sun, Thermodynamic investigation of the galvanizing systems, I: Refinement of the thermodynamic description for the Fe–Zn system, Calphad 33, 433-440 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/S0925-8388(01)01273-7 X. Su, N.-Y. Tang, J.M. Toguri, J. Alloys Compd., 325, 129-36(2001).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.2298/JMMB1101001T Y. Tang, X. Yuan, Y. Du, W. Xiong, J. Mining Metall. B, 47, 1-10(2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2004.12.031 Xuping Su, Fucheng Yin, Zhi Li, Nai-Yong Tang, Manxiu Zhao, Thermodynamic calculation of the Fe–Zn–Si system, Journal of Alloys and Compounds 396, 156-163 (2005).
assessment that models this phase
doi:10.1361/105497100770339905 G. Reumont, P. Perrot, J. M. Fiorani, J. Hertz, Thermodynamic assessment of the Fe-Zn system, JPE 21, 371-378 (2000).
assessment that models this phase
doi:10.1515/ijmr-1980-710303 P.J. Gellings, G. Gierman, D. Koster, J. Kuit, Z. Metallkd., 71 (1980) 150.
cited as the source of values for this phase

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735970
R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23736065

Also cite B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work). Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes.

@misc{orchid_phase_registry_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Registry: phase registry of binary systems}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735970},
  url       = {https://doi.org/10.5281/zenodo.23735970},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_data_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID data: umbrella record of the ORCHID datasets}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23736065},
  url       = {https://doi.org/10.5281/zenodo.23736065},
  note      = {Version 1, machine-extracted}
}