Categoria: | Superaustenitic | ||||
---|---|---|---|---|---|
ACI/CAST GRADE |
CK3MCuN | ||||
CAST ASTM | A351 | ||||
CAST EN/DIN | – | ||||
CAST UNS | J93254 | ||||
WROUGHT UNS |
S31254 | ||||
WROUGHT GRADE |
254 SMO®, F44 | ||||
CHEMICAL COMPOSITION (wt%, TYPICAL VALUES) | |||||
C | <0.025 | ||||
Cr | 20.0 | ||||
Ni | 18.0 | ||||
Mo | 6.3 | ||||
Other | 0.7Cu, 0.2N | ||||
PREn | >40 | ||||
CASTINGS MINIMUM MECHANICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED) | |||||
Rp0.2[MPa] | 260 | ||||
Rm [MPa] | 550 | ||||
A % | 35 | ||||
Hardness [HB] | 150-210 | ||||
Impact [J] | 120 | ||||
PHYSICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED) | |||||
Microstructure | Austenitic | ||||
ρ [kg/dm3] | 8.0 | ||||
α [μm/m∙K] (20 – 100 °C) | 16.5 | ||||
K [W/m∙K] | 12.4 | ||||
Cp [J/kg∙K] | 440 | ||||
Melting ΔT [°C] | 1306-1386 | ||||
WORKING CONDITIONS / FABRICATION | |||||
Heat Treatment | Solution Annealing | ||||
Weldability | Excellent | ||||
Machining | – | ||||
Patternmaker’s Shrinkage [%] | 2.6 |
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