Dispal® S221 PM
Gränges DISPAL S221 PM (manufacturer development sheet) | Gränges DISPAL powder-metallurgy material; product form not specified for the selected physical facts
Manufacturer-reported values. Do not use as certified design allowables. View sources ↗
No reviewed mechanical claim for this record.
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% |
|---|---|---|
| No reviewed composition claim for this record. | ||
The 2022 original-developer S221PM sheet calls this a development alloy, and its 20°C density agrees with the current 2024 S221 PM sheet. The 30°C thermal-conductivity value first appears in the 2024 sheet. The portfolio AlSi40 label is nominal, not certified chemistry limits. Mechanical values remain unpublished because the 2022 sheet calls them not statistically validated and the 2024 sheet calls them preliminary minimums dependent on geometry and process.
Physical and thermal properties
| Property | Reported value | Unit | Condition |
|---|---|---|---|
| density | 2.53 | g/cm³ | At 20°C; manufacturer reports ±5% |
| thermal conductivity | 138.3 | W/(m·K) | Thermal conductivity at 30°C |
Evidence
DISPAL S221 PM data sheet (2024-11) — Gränges AB
Show the exact source location for each value
- density — PDF p. 1, S221 PM physical properties at 20°C, Density row ↗
- thermal conductivity — PDF p. 1, S221 PM thermal conductivity table, 30°C column ↗