# Mn–Sn phases

> Mn–Sn system: 13 phases (tier A 9, tier C 1, liquid 1, needs_review 2); 11 stable in a calculated diagram in the ORCHID phase registry, with names, structure type when the stored evidence supports an assignment under the stated tier rules, calculated stability, verbatim TDB PHASE/CONSTITUENT statements and example references.

HTML: https://data.orchid-project.org/phases/pages/MN-SN.html · Markdown: https://data.orchid-project.org/phases/pages/MN-SN.md

13 phases (tier A 9, tier C 1, liquid 1, needs_review 2); 11 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](https://orchid-project.org/phases/?q=MN-SN) · [full JSON](https://data.orchid-project.org/phases/systems/MN-SN.json) · [Mn–Sn system page](https://data.orchid-project.org/systems/MN-SN.html) · [Markdown](https://data.orchid-project.org/phases/pages/MN-SN.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Mn–Sn system (13)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [DIAMOND_A4](#phase-mn-sn-a4-diamond); _phase:mn-sn:a4-diamond_ | C (diamond) · A4 · cF8 · Fd-3m (227) | tier A: standard phase name | not stable in 2 calculated diagram(s) | 0 | 2 |
| [BCT_A5](#phase-mn-sn-a5-bct); _phase:mn-sn:a5-bct_ | beta-Sn · A5 · tI4 · I4_1/amd (141) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–504.92 K, x(Sn) 1–1 | 0 | 2 |
| [BCC_A2](#phase-mn-sn-bcc-a2); _phase:mn-sn:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 1301.97–1520 K, x(Sn) 0–0.09499 | 0 | 2 |
| [CBCC_A12](#phase-mn-sn-cbcc-a12); _phase:mn-sn:cbcc-a12_ | alpha-Mn · A12 · cI58 · I-43m (217) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1028.19 K, x(Sn) 0–0.00468 | 0 | 2 |
| [CUB_A13](#phase-mn-sn-cub-a13); _phase:mn-sn:cub-a13_ | beta-Mn · A13 · cP20 · P4_132 (213) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 376.54–1382.99 K, x(Sn) 0–0.11881 | 0 | 2 |
| [FCC_A1](#phase-mn-sn-fcc-a1); _phase:mn-sn:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 1307.73–1412.01 K, x(Sn) 0–0.0705 | 0 | 2 |
| [HCP_A3](#phase-mn-sn-hcp-a3); _phase:mn-sn:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 2 calculated diagram(s) | 0 | 2 |
| [LIQUID](#phase-mn-sn-liquid); _phase:mn-sn:liquid_ | liquid | liquid | stable in 2 of 2 calculated diagram(s): 504.83–2500 K, x(Sn) 0–1 | 0 | 2 |
| [MN19SN6_D019](#phase-mn-sn-mn19sn6-d019); _phase:mn-sn:mn19sn6-d019_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 544.65–1256.92 K, x(Sn) 0.24–0.24 | 0 | 1 |
| [MN2SN_B82](#phase-mn-sn-mn2sn-b82); _phase:mn-sn:mn2sn-b82_ |  | needs_review | stable in 2 of 2 calculated diagram(s): 300–1156.94 K, x(Sn) 0.33333–0.357 | 0 | 2 |
| [MN3SN_D019](#phase-mn-sn-mn3sn-d019); _phase:mn-sn:mn3sn-d019_ | Ni3Sn · D0_19 · hP8 · P6_3/mmc (194) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1257.04 K, x(Sn) 0.25–0.25 | 0 | 1 |
| [MN3SN2](#phase-mn-sn-mn3sn2); _phase:mn-sn:mn3sn2_ | Ni3Sn2 · oP20 · Pnma (62) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 332.67–811.67 K, x(Sn) 0.4–0.4 | 0 | 1 |
| [MNSN2_C16](#phase-mn-sn-mnsn2-c16); _phase:mn-sn:mnsn2-c16_ | Al2Cu · C16 · tI12 · I4/mcm (140) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–822.84 K, x(Sn) 0.66667–0.66667 | 0 | 2 |

## DIAMOND_A4 (Mn–Sn)

- Id: `phase:mn-sn:a4-diamond`; status `assigned`
- Structure: C (diamond) · A4 · cF8 · Fd-3m (227); type `st:a4-c-diamond-cf8`; tier A: standard phase name; confidence high
- Stoichiometry: Sn 1.0000
- Stability: not stable in 2 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mn-sn:a4-diamond)

Names (3): _corpus: _corpus:phase:mn-sn:a4-diamond  
_tdb: _tdb:MnSn-01Mie.tdb:DIAMOND_A4, tdb:MnSn-04Liu.tdb:DIAMOND_A4  


### TDB models of DIAMOND_A4 (2): PHASE and CONSTITUENT statements as written

[MnSn-01Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-01Mie.tdb): DIAMOND_A4, type code %, sha256 `d25c910b69f2cf88…`

~~~~text
47: PHASE DIAMOND_A4 % 1 1 !
48: CONST DIAMOND_A4 : SN : !
~~~~

[MnSn-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-04Liu.tdb): DIAMOND_A4, type code %, sha256 `6e280c7deef79942…`

~~~~text
45: PHASE DIAMOND_A4 % 1 1 !
46: CONST DIAMOND_A4 : SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s11661-004-0073-0](https://doi.org/10.1007/s11661-004-0073-0) X. J. Liu, R. Kainuma, C. P. Wang, I. Ohnuma, K. Ishida, Experimental investigation and thermodynamic calculation of the phase equilibria in the Cu-Sn and Cu-Sn-Mn systems, Metall Mater Trans A 35, 1641-1654 (2004).  
_assessment that models this phase_
- [doi:10.1016/S0364-5916(01)00029-3](https://doi.org/10.1016/S0364-5916%2801%2900029-3) J. Miettinen, Calphad, 25, 43-58(2001).  
_assessment that models this phase_

## BCT_A5 (Mn–Sn)

- Id: `phase:mn-sn:a5-bct`; status `assigned`
- Structure: beta-Sn · A5 · tI4 · I4_1/amd (141); type `st:a5-beta-sn-ti4`; tier A: standard phase name; confidence high
- Stoichiometry: Sn 1.0000
- Stability: stable in 2 of 2 calculated diagram(s): 300–504.92 K, x(Sn) 1–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mn-sn:a5-bct)

Names (3): _corpus: _corpus:phase:mn-sn:a5-bct  
_tdb: _tdb:MnSn-01Mie.tdb:BCT_A5, tdb:MnSn-04Liu.tdb:BCT_A5  


### TDB models of BCT_A5 (2): PHASE and CONSTITUENT statements as written

[MnSn-01Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-01Mie.tdb): BCT_A5, type code %, sha256 `d25c910b69f2cf88…`

~~~~text
62: PHASE BCT_A5 % 1 1 !
63: CONST BCT_A5 : SN : !
~~~~

[MnSn-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-04Liu.tdb): BCT_A5, type code %, sha256 `6e280c7deef79942…`

~~~~text
60: PHASE BCT_A5 % 1 1 !
61: CONST BCT_A5 : SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s11661-004-0073-0](https://doi.org/10.1007/s11661-004-0073-0) X. J. Liu, R. Kainuma, C. P. Wang, I. Ohnuma, K. Ishida, Experimental investigation and thermodynamic calculation of the phase equilibria in the Cu-Sn and Cu-Sn-Mn systems, Metall Mater Trans A 35, 1641-1654 (2004).  
_assessment that models this phase_
- [doi:10.1016/S0364-5916(01)00029-3](https://doi.org/10.1016/S0364-5916%2801%2900029-3) J. Miettinen, Calphad, 25, 43-58(2001).  
_assessment that models this phase_

## BCC_A2 (Mn–Sn)

- Id: `phase:mn-sn: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 2 of 2 calculated diagram(s): 1301.97–1520 K, x(Sn) 0–0.09499
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mn-sn:bcc-a2)

Names (3): _corpus: _corpus:phase:mn-sn:bcc-a2  
_tdb: _tdb:MnSn-01Mie.tdb:BCC_A2, tdb:MnSn-04Liu.tdb:BCC_A2  


### TDB models of BCC_A2 (2): PHASE and CONSTITUENT statements as written

[MnSn-01Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-01Mie.tdb): BCC_A2, type code %B, sha256 `d25c910b69f2cf88…`

~~~~text
37: PHASE BCC_A2 %B 2 1 3 !
38: CONST BCC_A2 : MN SN : VA : !
~~~~

[MnSn-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-04Liu.tdb): BCC_A2, type code %B, sha256 `6e280c7deef79942…`

~~~~text
35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : MN SN : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s11661-004-0073-0](https://doi.org/10.1007/s11661-004-0073-0) X. J. Liu, R. Kainuma, C. P. Wang, I. Ohnuma, K. Ishida, Experimental investigation and thermodynamic calculation of the phase equilibria in the Cu-Sn and Cu-Sn-Mn systems, Metall Mater Trans A 35, 1641-1654 (2004).  
_assessment that models this phase_
- [doi:10.1016/S0364-5916(01)00029-3](https://doi.org/10.1016/S0364-5916%2801%2900029-3) J. Miettinen, Calphad, 25, 43-58(2001).  
_assessment that models this phase_

## CBCC_A12 (Mn–Sn)

- Id: `phase:mn-sn:cbcc-a12`; status `assigned`
- Structure: alpha-Mn · A12 · cI58 · I-43m (217); type `st:a12-alpha-mn-ci58`; tier A: standard phase name; confidence high
- Stability: stable in 2 of 2 calculated diagram(s): 300–1028.19 K, x(Sn) 0–0.00468
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mn-sn:cbcc-a12)

Names (3): _corpus: _corpus:phase:mn-sn:cbcc-a12  
_tdb: _tdb:MnSn-01Mie.tdb:CBCC_A12, tdb:MnSn-04Liu.tdb:CBCC_A12  


### TDB models of CBCC_A12 (2): PHASE and CONSTITUENT statements as written

[MnSn-01Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-01Mie.tdb): CBCC_A12, type code %A, sha256 `d25c910b69f2cf88…`

~~~~text
52: PHASE CBCC_A12 %A 2 1 1 !
53: CONST CBCC_A12 : MN SN : VA : !
~~~~

[MnSn-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-04Liu.tdb): CBCC_A12, type code %A, sha256 `6e280c7deef79942…`

~~~~text
50: PHASE CBCC_A12 %A 2 1 1 !
51: CONST CBCC_A12 : MN SN : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s11661-004-0073-0](https://doi.org/10.1007/s11661-004-0073-0) X. J. Liu, R. Kainuma, C. P. Wang, I. Ohnuma, K. Ishida, Experimental investigation and thermodynamic calculation of the phase equilibria in the Cu-Sn and Cu-Sn-Mn systems, Metall Mater Trans A 35, 1641-1654 (2004).  
_assessment that models this phase_
- [doi:10.1016/S0364-5916(01)00029-3](https://doi.org/10.1016/S0364-5916%2801%2900029-3) J. Miettinen, Calphad, 25, 43-58(2001).  
_assessment that models this phase_

## CUB_A13 (Mn–Sn)

- Id: `phase:mn-sn:cub-a13`; status `assigned`
- Structure: beta-Mn · A13 · cP20 · P4_132 (213); type `st:a13-beta-mn-cp20`; tier A: standard phase name; confidence high
- Stability: stable in 2 of 2 calculated diagram(s): 376.54–1382.99 K, x(Sn) 0–0.11881
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mn-sn:cub-a13)

Names (3): _corpus: _corpus:phase:mn-sn:cub-a13  
_tdb: _tdb:MnSn-01Mie.tdb:CUB_A13, tdb:MnSn-04Liu.tdb:CUB_A13  


### TDB models of CUB_A13 (2): PHASE and CONSTITUENT statements as written

[MnSn-01Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-01Mie.tdb): CUB_A13, type code %, sha256 `d25c910b69f2cf88…`

~~~~text
57: PHASE CUB_A13 % 2 1 1 !
58: CONST CUB_A13 : MN SN : VA : !
~~~~

[MnSn-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-04Liu.tdb): CUB_A13, type code %, sha256 `6e280c7deef79942…`

~~~~text
55: PHASE CUB_A13 % 2 1 1 !
56: CONST CUB_A13 : MN SN : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s11661-004-0073-0](https://doi.org/10.1007/s11661-004-0073-0) X. J. Liu, R. Kainuma, C. P. Wang, I. Ohnuma, K. Ishida, Experimental investigation and thermodynamic calculation of the phase equilibria in the Cu-Sn and Cu-Sn-Mn systems, Metall Mater Trans A 35, 1641-1654 (2004).  
_assessment that models this phase_
- [doi:10.1016/S0364-5916(01)00029-3](https://doi.org/10.1016/S0364-5916%2801%2900029-3) J. Miettinen, Calphad, 25, 43-58(2001).  
_assessment that models this phase_

## FCC_A1 (Mn–Sn)

- Id: `phase:mn-sn: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 2 of 2 calculated diagram(s): 1307.73–1412.01 K, x(Sn) 0–0.0705
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mn-sn:fcc-a1)

Names (3): _corpus: _corpus:phase:mn-sn:fcc-a1  
_tdb: _tdb:MnSn-01Mie.tdb:FCC_A1, tdb:MnSn-04Liu.tdb:FCC_A1  


### TDB models of FCC_A1 (2): PHASE and CONSTITUENT statements as written

[MnSn-01Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-01Mie.tdb): FCC_A1, type code %A, sha256 `d25c910b69f2cf88…`

~~~~text
32: PHASE FCC_A1 %A 2 1 1 !
33: CONST FCC_A1 : MN SN : VA : !
~~~~

[MnSn-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-04Liu.tdb): FCC_A1, type code %A, sha256 `6e280c7deef79942…`

~~~~text
30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : MN SN : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s11661-004-0073-0](https://doi.org/10.1007/s11661-004-0073-0) X. J. Liu, R. Kainuma, C. P. Wang, I. Ohnuma, K. Ishida, Experimental investigation and thermodynamic calculation of the phase equilibria in the Cu-Sn and Cu-Sn-Mn systems, Metall Mater Trans A 35, 1641-1654 (2004).  
_assessment that models this phase_
- [doi:10.1016/S0364-5916(01)00029-3](https://doi.org/10.1016/S0364-5916%2801%2900029-3) J. Miettinen, Calphad, 25, 43-58(2001).  
_assessment that models this phase_

## HCP_A3 (Mn–Sn)

- Id: `phase:mn-sn: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: not stable in 2 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mn-sn:hcp-a3)

Names (3): _corpus: _corpus:phase:mn-sn:hcp-a3  
_tdb: _tdb:MnSn-01Mie.tdb:HCP_A3, tdb:MnSn-04Liu.tdb:HCP_A3  


### TDB models of HCP_A3 (2): PHASE and CONSTITUENT statements as written

[MnSn-01Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-01Mie.tdb): HCP_A3, type code %A, sha256 `d25c910b69f2cf88…`

~~~~text
42: PHASE HCP_A3 %A 2 1 0.5 !
43: CONST HCP_A3 : MN SN : VA : !
~~~~

[MnSn-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-04Liu.tdb): HCP_A3, type code %A, sha256 `6e280c7deef79942…`

~~~~text
40: PHASE HCP_A3 %A 2 1 0.5 !
41: CONST HCP_A3 : MN SN : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s11661-004-0073-0](https://doi.org/10.1007/s11661-004-0073-0) X. J. Liu, R. Kainuma, C. P. Wang, I. Ohnuma, K. Ishida, Experimental investigation and thermodynamic calculation of the phase equilibria in the Cu-Sn and Cu-Sn-Mn systems, Metall Mater Trans A 35, 1641-1654 (2004).  
_assessment that models this phase_
- [doi:10.1016/S0364-5916(01)00029-3](https://doi.org/10.1016/S0364-5916%2801%2900029-3) J. Miettinen, Calphad, 25, 43-58(2001).  
_assessment that models this phase_

## LIQUID (Mn–Sn)

- Id: `phase:mn-sn:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 2 of 2 calculated diagram(s): 504.83–2500 K, x(Sn) 0–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mn-sn:liquid)

Names (3): _corpus: _corpus:phase:mn-sn:liquid  
_tdb: _tdb:MnSn-01Mie.tdb:LIQUID, tdb:MnSn-04Liu.tdb:LIQUID  


### TDB models of LIQUID (2): PHASE and CONSTITUENT statements as written

[MnSn-01Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-01Mie.tdb): LIQUID, type code %, sha256 `d25c910b69f2cf88…`

~~~~text
27: PHASE LIQUID:L % 1 1 !
28: CONST LIQUID:L : MN SN : !
~~~~

[MnSn-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-04Liu.tdb): LIQUID, type code %, sha256 `6e280c7deef79942…`

~~~~text
25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : MN SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s11661-004-0073-0](https://doi.org/10.1007/s11661-004-0073-0) X. J. Liu, R. Kainuma, C. P. Wang, I. Ohnuma, K. Ishida, Experimental investigation and thermodynamic calculation of the phase equilibria in the Cu-Sn and Cu-Sn-Mn systems, Metall Mater Trans A 35, 1641-1654 (2004).  
_assessment that models this phase_
- [doi:10.1016/S0364-5916(01)00029-3](https://doi.org/10.1016/S0364-5916%2801%2900029-3) J. Miettinen, Calphad, 25, 43-58(2001).  
_assessment that models this phase_

## MN19SN6_D019 (Mn–Sn)

- Id: `phase:mn-sn:mn19sn6-d019`; status `needs_review`
- No structure assigned. Why: assessment_declared_blocked_by:stoichiometry_contradicts_D0_19; stoichiometry_contradicts_D0_19:MnSn-01Mie.tdb
- Candidate (name_token): Ni3Sn · D0_19 · hP8 · P6_3/mmc (194) — Strukturbericht/word 'D019' in the TDB name
- Candidate (sgte_mmc2): Ni3Sn · D0_19 · hP8 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for MN19SN6_D019: Mn19Sn6
- Candidate (tdb_comment): CdMg3 · hP8 · P6_3/mmc — MnSn-01Mie.tdb: 'Prototype CdMg3 (hP8, P6_3/mmc)'
- Stoichiometry: Mn 0.7600, Sn 0.2400
- Stability: stable in 1 of 1 calculated diagram(s): 544.65–1256.92 K, x(Sn) 0.24–0.24
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mn-sn:mn19sn6-d019)

Names (2): _corpus: _corpus:phase:mn-sn:mn19sn6-d019  
_tdb: _tdb:MnSn-01Mie.tdb:MN19SN6_D019  


### TDB models of MN19SN6_D019 (1): PHASE and CONSTITUENT statements as written

[MnSn-01Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-01Mie.tdb): MN19SN6_D019, type code %, sha256 `d25c910b69f2cf88…`

~~~~text
67: PHASE MN19SN6_D019 % 2 19 6 !
68: CONST MN19SN6_D019 : MN : SN : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/S0364-5916(01)00029-3](https://doi.org/10.1016/S0364-5916%2801%2900029-3) J. Miettinen, Calphad, 25, 43-58(2001).  
_assessment that models this phase_

## MN2SN_B82 (Mn–Sn)

- Id: `phase:mn-sn:mn2sn-b82`; status `needs_review`
- No structure assigned. Why: assessment_declared_blocked_by:models_disagree_on_composition; models_disagree_on_composition; stoichiometry_contradicts_B8_2:MnSn-04Liu.tdb
- Candidate (name_token): InNi2 · B8_2 · hP6 · P6_3/mmc (194) — Strukturbericht/word 'B82' in the TDB name
- Candidate (sgte_mmc2): InNi2 · B8_2 · hP6 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for MN2SN_B82: Mn2Sn
- Candidate (tdb_comment): InNi2 · hP6 · P6_3/mmc — MnSn-01Mie.tdb: 'Prototype InNi2 (hP6, P6_3/mmc)'
- Candidate (tdb_comment): InNi2 · hP6 · P6_3/mmc — MnSn-04Liu.tdb: 'Prototype InNi2 (hP6, P6_3/mmc)'
- Stability: stable in 2 of 2 calculated diagram(s): 300–1156.94 K, x(Sn) 0.33333–0.357
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mn-sn:mn2sn-b82)

Names (3): _corpus: _corpus:phase:mn-sn:mn2sn-b82  
_tdb: _tdb:MnSn-01Mie.tdb:MN2SN_B82, tdb:MnSn-04Liu.tdb:MN2SN_B82  


### TDB models of MN2SN_B82 (2): PHASE and CONSTITUENT statements as written

[MnSn-01Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-01Mie.tdb): MN2SN_B82, type code %, sha256 `d25c910b69f2cf88…`

~~~~text
72: PHASE MN2SN_B82 % 2 2 1 !
73: CONST MN2SN_B82 : MN : SN : !
~~~~

[MnSn-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-04Liu.tdb): MN2SN_B82, type code %, sha256 `6e280c7deef79942…`

~~~~text
70: PHASE MN2SN_B82 % 2 0.643 0.357 !
71: CONST MN2SN_B82 : MN : SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s11661-004-0073-0](https://doi.org/10.1007/s11661-004-0073-0) X. J. Liu, R. Kainuma, C. P. Wang, I. Ohnuma, K. Ishida, Experimental investigation and thermodynamic calculation of the phase equilibria in the Cu-Sn and Cu-Sn-Mn systems, Metall Mater Trans A 35, 1641-1654 (2004).  
_assessment that models this phase_
- [doi:10.1016/S0364-5916(01)00029-3](https://doi.org/10.1016/S0364-5916%2801%2900029-3) J. Miettinen, Calphad, 25, 43-58(2001).  
_assessment that models this phase_

## MN3SN_D019 (Mn–Sn)

- Id: `phase:mn-sn:mn3sn-d019`; status `assigned`
- Structure: Ni3Sn · D0_19 · hP8 · P6_3/mmc (194); type `st:d0-19-ni3sn-hp8`; tier A: standard phase name; confidence high
- Stoichiometry: Mn 0.7500, Sn 0.2500
- Stability: stable in 1 of 1 calculated diagram(s): 300–1257.04 K, x(Sn) 0.25–0.25
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mn-sn:mn3sn-d019)

Names (2): _corpus: _corpus:phase:mn-sn:mn3sn-d019  
_tdb: _tdb:MnSn-04Liu.tdb:MN3SN_D019  


### TDB models of MN3SN_D019 (1): PHASE and CONSTITUENT statements as written

[MnSn-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-04Liu.tdb): MN3SN_D019, type code %, sha256 `6e280c7deef79942…`

~~~~text
65: PHASE MN3SN_D019 % 2 3 1 !
66: CONST MN3SN_D019 : MN : SN : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1007/s11661-004-0073-0](https://doi.org/10.1007/s11661-004-0073-0) X. J. Liu, R. Kainuma, C. P. Wang, I. Ohnuma, K. Ishida, Experimental investigation and thermodynamic calculation of the phase equilibria in the Cu-Sn and Cu-Sn-Mn systems, Metall Mater Trans A 35, 1641-1654 (2004).  
_assessment that models this phase_

## MN3SN2 (Mn–Sn)

- Id: `phase:mn-sn:mn3sn2`; status `assigned`
- Structure: Ni3Sn2 · oP20 · Pnma (62); type `st:ni3sn2-op20`; 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](https://doi.org/10.1016/j.calphad.2025.102833)
- Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Mn 0.6000, Sn 0.4000
- Stability: stable in 1 of 1 calculated diagram(s): 332.67–811.67 K, x(Sn) 0.4–0.4
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mn-sn:mn3sn2)

Names (2): _corpus: _corpus:phase:mn-sn:mn3sn2  
_tdb: _tdb:MnSn-04Liu.tdb:MN3SN2  


### TDB models of MN3SN2 (1): PHASE and CONSTITUENT statements as written

[MnSn-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-04Liu.tdb): MN3SN2, type code %, sha256 `6e280c7deef79942…`

~~~~text
75: PHASE MN3SN2 % 2 3 2 !
76: CONST MN3SN2 : MN : SN : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1007/s11661-004-0073-0](https://doi.org/10.1007/s11661-004-0073-0) X. J. Liu, R. Kainuma, C. P. Wang, I. Ohnuma, K. Ishida, Experimental investigation and thermodynamic calculation of the phase equilibria in the Cu-Sn and Cu-Sn-Mn systems, Metall Mater Trans A 35, 1641-1654 (2004).  
_assessment that models this phase_

## MNSN2_C16 (Mn–Sn)

- Id: `phase:mn-sn:mnsn2-c16`; status `assigned`
- Structure: Al2Cu · C16 · tI12 · I4/mcm (140); type `st:c16-al2cu-ti12`; tier A: standard phase name; confidence high
- Stoichiometry: Mn 0.3333, Sn 0.6667
- Stability: stable in 2 of 2 calculated diagram(s): 300–822.84 K, x(Sn) 0.66667–0.66667
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mn-sn:mnsn2-c16)

Names (3): _corpus: _corpus:phase:mn-sn:mnsn2-c16  
_tdb: _tdb:MnSn-01Mie.tdb:MNSN2_C16, tdb:MnSn-04Liu.tdb:MNSN2_C16  


### TDB models of MNSN2_C16 (2): PHASE and CONSTITUENT statements as written

[MnSn-01Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-01Mie.tdb): MNSN2_C16, type code %, sha256 `d25c910b69f2cf88…`

~~~~text
77: PHASE MNSN2_C16 % 2 1 2 !
78: CONST MNSN2_C16 : MN : SN : !
~~~~

[MnSn-04Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/MnSn-04Liu.tdb): MNSN2_C16, type code %, sha256 `6e280c7deef79942…`

~~~~text
80: PHASE MNSN2_C16 % 2 1 2 !
81: CONST MNSN2_C16 : MN : SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s11661-004-0073-0](https://doi.org/10.1007/s11661-004-0073-0) X. J. Liu, R. Kainuma, C. P. Wang, I. Ohnuma, K. Ishida, Experimental investigation and thermodynamic calculation of the phase equilibria in the Cu-Sn and Cu-Sn-Mn systems, Metall Mater Trans A 35, 1641-1654 (2004).  
_assessment that models this phase_
- [doi:10.1016/S0364-5916(01)00029-3](https://doi.org/10.1016/S0364-5916%2801%2900029-3) J. Miettinen, Calphad, 25, 43-58(2001).  
_assessment that models 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). https://doi.org/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). https://doi.org/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.

```bibtex
@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}
}
```

---

Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite the ORCHID phase registry and the sources named on the page (TDB assessments, Hallstedt 2025, Materials Project, OQMD). TDB statements are quoted as written; parameter expressions are not reproduced. Field reference: [SCHEMA.md](https://data.orchid-project.org/phases/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt).
