Silafont-38
Silafont-38 / AlSi9MnMgZn (RHEINFELDEN ALLOYS) | High-pressure die casting
Manufacturer-reported values. Do not use as certified design allowables. View sources ↗
No complete reviewed mechanical condition. Separately reviewed property observations appear below.
Chemical composition
Only reviewed weight-percent bounds are listed. A blank bound means only the other threshold was reported.
| Element / source label | Minimum wt% | Upper wt% |
|---|---|---|
| Fe | — | 0.15 |
| Cu | 0.1 | 0.4 |
| Ti | — | 0.15 |
The original supplier's 2015 and 2017 Silafont-38 editions differ in Si, Mn, Mg and Zn composition intervals and F/T6 mechanical ranges; the current family page repeats the 2015 mechanical table. Only matching chemistry cells and mechanical partial observations are published. The 2016 physical table conflicts with 2017 for density, thermal conductivity and electrical conductivity; those are held. 2016-only heat-treated physical entries are edition-labelled and not transferred to a 2017 formulation. Sr and Zr rows are not treated as equivalent. The 2017 detailed specimen tables mix AlSi9MnMgZn headers with AlSi9MnMgZr captions and are not digitized. No composite mechanical chart is constructed from the editions.
Physical and thermal properties
| Property | Reported value | Unit | Condition |
|---|---|---|---|
| youngs modulus | 74–83 | GPa | 2016 primary-alloys handbook edition; heat-treatable alloy in heat-treated state; test temperature not reported |
| thermal expansion | 21 | 10⁻⁶/K | 2016 primary-alloys handbook edition; heat-treatable alloy in heat-treated state; 20–200 °C |
| linear shrinkage | 0.4–0.6 | % | HPDC; original-supplier 2015 processing comparison and 2017 physical table; casting geometry not specified |
Processing properties
Source-reported comparisons, not certified limits.
| Property | Reported value |
|---|---|
| mold release | Supplier describes low die/mold sticking tendency; no numeric adhesion or release test is supplied. |
| machinability | Supplier describes excellent machinability; no quantitative cutting protocol is supplied. |
Additional property data
Source-reported values, specification intervals, minimums and strict bounds; an average is labeled only when the source reports it. Compare conditions before use.
| Property | Value | Condition |
|---|---|---|
| ultimate tensile strength | 270–300 MPa | HPDC; F; 2015 and 2017 supplier performance rows agree on this cell; wall and specimen size not reported |
| elongation | 6–9 % | HPDC; T6; water quench; 2015 and 2017 supplier performance rows agree on this cell; wall and specimen size not reported |
Data under review
Composition Si withheld: The 2015 and 2017 original-supplier Si composition limits differ. Do not merge editions or publish one specification without issuer clarification.
Silafont-38 original-supplier 2015 edition ↗ — PDF p. 2, Silafont-38 composition_Si comparison
Silafont-38 original-supplier 2017 edition ↗ — PDF p. 9, Silafont-38 composition_Si comparison
Composition Mn withheld: The 2015 and 2017 original-supplier Mn composition limits differ. Do not merge editions or publish one specification without issuer clarification.
Silafont-38 original-supplier 2015 edition ↗ — PDF p. 2, Silafont-38 composition_Mn comparison
Silafont-38 original-supplier 2017 edition ↗ — PDF p. 9, Silafont-38 composition_Mn comparison
Composition Mg withheld: The 2015 and 2017 original-supplier Mg composition limits differ. Do not merge editions or publish one specification without issuer clarification.
Silafont-38 original-supplier 2015 edition ↗ — PDF p. 2, Silafont-38 composition_Mg comparison
Silafont-38 original-supplier 2017 edition ↗ — PDF p. 9, Silafont-38 composition_Mg comparison
Composition Zn withheld: The 2015 and 2017 original-supplier Zn composition limits differ. Do not merge editions or publish one specification without issuer clarification.
Silafont-38 original-supplier 2015 edition ↗ — PDF p. 2, Silafont-38 composition_Zn comparison
Silafont-38 original-supplier 2017 edition ↗ — PDF p. 9, Silafont-38 composition_Zn comparison
Yield Strength withheld: The same HPDC F YTS performance interval differs between 2015 and 2017 original-supplier editions. Neither range is selected.
Silafont-38 original-supplier 2015 edition ↗ — PDF p. 2, Silafont-38 yield_strength comparison
Silafont-38 original-supplier 2017 edition ↗ — PDF p. 9, Silafont-38 yield_strength comparison
Elongation withheld: The same HPDC F Elongation performance interval differs between 2015 and 2017 original-supplier editions. Neither range is selected.
Silafont-38 original-supplier 2015 edition ↗ — PDF p. 2, Silafont-38 elongation comparison
Silafont-38 original-supplier 2017 edition ↗ — PDF p. 9, Silafont-38 elongation comparison
Yield Strength withheld: The same HPDC T6; water quench YTS performance interval differs between 2015 and 2017 original-supplier editions. Neither range is selected.
Silafont-38 original-supplier 2015 edition ↗ — PDF p. 2, Silafont-38 yield_strength comparison
Silafont-38 original-supplier 2017 edition ↗ — PDF p. 9, Silafont-38 yield_strength comparison
Ultimate Tensile Strength withheld: The same HPDC T6; water quench UTS performance interval differs between 2015 and 2017 original-supplier editions. Neither range is selected.
Silafont-38 original-supplier 2015 edition ↗ — PDF p. 2, Silafont-38 ultimate_tensile_strength comparison
Silafont-38 original-supplier 2017 edition ↗ — PDF p. 9, Silafont-38 ultimate_tensile_strength comparison
Yield Strength withheld: The same HPDC T6; air quench YTS performance interval differs between 2015 and 2017 original-supplier editions. Neither range is selected.
Silafont-38 original-supplier 2015 edition ↗ — PDF p. 2, Silafont-38 yield_strength comparison
Silafont-38 original-supplier 2017 edition ↗ — PDF p. 9, Silafont-38 yield_strength comparison
Ultimate Tensile Strength withheld: The same HPDC T6; air quench UTS performance interval differs between 2015 and 2017 original-supplier editions. Neither range is selected.
Silafont-38 original-supplier 2015 edition ↗ — PDF p. 2, Silafont-38 ultimate_tensile_strength comparison
Silafont-38 original-supplier 2017 edition ↗ — PDF p. 9, Silafont-38 ultimate_tensile_strength comparison
Elongation withheld: The same HPDC T6; air quench Elongation performance interval differs between 2015 and 2017 original-supplier editions. Neither range is selected.
Silafont-38 original-supplier 2015 edition ↗ — PDF p. 2, Silafont-38 elongation comparison
Silafont-38 original-supplier 2017 edition ↗ — PDF p. 9, Silafont-38 elongation comparison
Density withheld: The original-supplier 2016 physical summary and 2017 structural-casts edition report different density; no blend or preferred value is published.
Silafont-38 original-supplier 2016 edition ↗ — PDF p. 80, Silafont-38 density comparison
Silafont-38 original-supplier 2017 edition ↗ — PDF p. 9, Silafont-38 density comparison
Thermal Conductivity withheld: The original-supplier 2016 physical summary and 2017 structural-casts edition report different thermal_conductivity; no blend or preferred value is published.
Silafont-38 original-supplier 2016 edition ↗ — PDF p. 80, Silafont-38 thermal_conductivity comparison
Silafont-38 original-supplier 2017 edition ↗ — PDF p. 9, Silafont-38 thermal_conductivity comparison
Electrical Conductivity withheld: The original-supplier 2016 physical summary gives 36.0–38.0 %IACS, while the 2017 structural-casts edition gives 36.0–41.5 %IACS. Neither interval is selected.
Silafont-38 original-supplier 2016 edition ↗ — PDF p. 81, Silafont-38 electrical conductivity facing row, %IACS column
Silafont-38 original-supplier 2017 edition ↗ — PDF p. 9, Silafont-38 electrical conductivity physical-table column
Evidence
Silafont-38 original-supplier 2015 edition — RHEINFELDEN ALLOYS GmbH & Co. KG
Silafont-38 original-supplier 2016 edition — RHEINFELDEN ALLOYS GmbH & Co. KG
Silafont-38 original-supplier 2017 edition — RHEINFELDEN ALLOYS GmbH & Co. KG
Show the exact source location for each value
- Fe — PDF p. 2, Silafont-38 Fe composition column ↗
- Fe — PDF p. 9, Silafont-38 Fe composition column ↗
- Cu — PDF p. 2, Silafont-38 Cu composition column ↗
- Cu — PDF p. 9, Silafont-38 Cu composition column ↗
- Ti — PDF p. 2, Silafont-38 Ti composition column ↗
- Ti — PDF p. 9, Silafont-38 Ti composition column ↗
- youngs modulus — PDF p. 80, Silafont-38 youngs_modulus physical-table cell ↗
- thermal expansion — PDF p. 80, Silafont-38 thermal_expansion physical-table cell ↗
- linear shrinkage — PDF p. 2, Silafont-38 linear shrinkage Silafont-38 column ↗
- linear shrinkage — PDF p. 9, Silafont-38 physical-table shrinkage column ↗
- mold release — PDF p. 1, Silafont-38 mold_release ↗
- mold release — PDF p. 8, Silafont-38 mold_release ↗
- machinability — PDF p. 1, Silafont-38 machinability ↗
- machinability — PDF p. 8, Silafont-38 machinability ↗
- ultimate tensile strength — PDF p. 2, Silafont-38 F ultimate_tensile_strength cell ↗
- ultimate tensile strength — PDF p. 9, Silafont-38 F ultimate_tensile_strength cell ↗
- elongation — PDF p. 2, Silafont-38 T6; water quench elongation cell ↗
- elongation — PDF p. 9, Silafont-38 T6; water quench elongation cell ↗