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CK20

ACI/CAST
GRADE
CAST ASTM CAST EN/DIN CAST UNS WROUGHT
UNS
WROUGHT
GRADE
CK20 A351, A743 - J94202 S31008 AISI 310S
CHEMICAL COMPOSITION (wt%, TYPICAL VALUES)
C Cr Ni Mo Other PREn
<0.20 25.0 20.5 <0.5 -
CASTINGS MINIMUM MECHANICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED)
Rp0.2[MPa] Rm [MPa] A % Hardness [HB] Impact [J]
195 450 30 150-220 80
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 7.75 - - - -
WORKING CONDITIONS / FABRICATION
Heat Treatment Weldability Machinability [100 = CF8M] Patternmaker’s Shrinkage [%]
Solution Annealing Satisfactory 2.7
Categoria: Austenitic
ACI/CAST
GRADE
CK20
CAST ASTM A351, A743
CAST EN/DIN -
CAST UNS J94202
WROUGHT
UNS
S31008
WROUGHT
GRADE
AISI 310S
CHEMICAL COMPOSITION (wt%, TYPICAL VALUES)
C <0.20
Cr 25.0
Ni 20.5
Mo <0.5
Other -
PREn
CASTINGS MINIMUM MECHANICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED)
Rp0.2[MPa] 195
Rm [MPa] 450
A % 30
Hardness [HB] 150-220
Impact [J] 80
PHYSICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED)
Microstructure Austenitic
ρ [kg/dm3] 7.75
α [μm/m∙K] (20 - 100 °C) -
K [W/m∙K] -
Cp [J/kg∙K] -
Melting ΔT [°C] -
WORKING CONDITIONS / FABRICATION
Heat Treatment Solution Annealing
Weldability Satisfactory
Machining
Patternmaker’s Shrinkage [%] 2.7

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