254 SMO®
254 SMO®
| ACI/CAST GRADE | CAST ASTM | CAST EN/DIN | CAST UNS | WROUGHT UNS | WROUGHT GRADE |
|---|---|---|---|---|---|
| CK3MCuN | A351 | 1.4547 X1CrNiMoCuN20-18-7 | J93254 | – | F44 |
| CHEMICAL COMPOSITION (wt%, TYPICAL VALUES) | |||||
|---|---|---|---|---|---|
| C | Cr | Ni | Mo | Other | PREn |
| <0.025 | 20.0 | 18.0 | 6.3 | 0.7Cu, 0.2N | >40 |
| CASTINGS MINIMUM MECHANICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED) | |||||
|---|---|---|---|---|---|
| Rp0.2[MPa] | Rm [MPa] | A % | Hardness [HB] | Impact [J] | |
| 260 | 550 | 35 | 150-210 | 120 | |
| PHYSICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED) | |||||
|---|---|---|---|---|---|
| Microstructure | ρ [kg/dm3] | α [μm/m∙K] (20 – 100 °C) | K [W/m∙K] | Cp [J/kg∙K] | Melting ΔT [°C] |
| Austenitic | 8.0 | 16.5 | 14 | 500 | – |
| WORKING CONDITIONS / FABRICATION | |||
|---|---|---|---|
| Heat Treatment | Weldability | Machinability [100 = CF8M] | Patternmaker’s Shrinkage [%] |
| Solution Annealing | Excellent | 50 | 2.6 |