K90901 High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Type | Steel Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | High Alloy | K90901 | |||
| K12047 | |||||
| T21 | |||||
| K31545 | |||||
| T22 | |||||
| K21590 | |||||
| T23 | |||||
| K40712 | |||||
| T24 | |||||
| K30736 | |||||
| T91 | 
| C ≤ | Si ≤ | Mn ≤ | P ≤ | S ≤ | Cr | Ni | 
|---|---|---|---|---|---|---|
| 0.07-0.14 | 0.2-0.5 | 0.3-0.6 | 0.02 | 0.01 | 8-9.5 | ≤0.4 | 
| Mo | Al | Cu | Nb | Ti | V | Ce | 
| 0.85-1.05 | ≤0.04 | 0.06-0.1 | 0.18-0.25 | |||
| N | Co | Pb | B | Other | ||
| 0.03-0.07 | ||||||
| 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) | 
|---|---|---|---|---|---|---|
| 782 (≥) | 636 (≥) | 44 | 11 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 311 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 23 | - | - | 0.41 | - | |||
| 797 | 152 | - | 23.3 | 123 | - | ||
| 185 | - | 11 | 24.2 | 224 | 321 | 
Heat treated : 1693°C - 1264°C
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