USA SAE F 738M (2002), F738 Class C4-50 S41623 Specialsteel Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application |
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | F738 Class C4-50 S41623 | Martensite | SAE | USA | Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs |
| C | Mn | Si | P | S | Cr | Ni | Mo | Se |
|---|---|---|---|---|---|---|---|---|
| 0.15 - ≥ | ≤1.25 | ≤1.00 | ≤0.06 | ≤0.06 | 12.00 -14.00 | ≤ ≥ | ≤0.60 | 0.15 - ≥ |
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 478 (≥) | 727 (≥) | 22 | 12 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 324 |
| Temperature (°C) |
Modulus of elasticity (GPa) |
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) |
Specific thermal capacity (J/kg·°C) |
Specific electrical resistivity (Ω mm²/m) |
Density (kg/dm³) |
Poisson’s coefficient, ν |
|---|---|---|---|---|---|---|---|
| 22 | - | - | 0.34 | - | |||
| 418 | 233 | - | 13.3 | 142 | - | ||
| 638 | - | 44 | 21.2 | 141 | 432 |
Heat treated : 1189°C - 1927°C
| F 738M (2002) | Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs | F-738M-(2002).pdf |
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