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Alloy Steel Castings for High Temperature Service


Grade Tensile strength, Min. kgf/mm2 Elongation percent Min. Yield stress or 0.5% proof stress Min. kgf/mm2 C
%
Si
%
Mn
%
S
%
P
%

1 55 17 35 0.2-0.25 0.15-4.4 1.25-1.45 0.05 0.05
2 47 17 25 0.25 Max. 0.2-0.5 0.5-1 0.05 0.05
3 52 15 31 0.15 Max. 0.4 Max. 0.4-0.8 0.05 0.05
4 49 17 28 0.2 Max. 0.6 Max. 0.5-0.8 0.05 0.05
5 52 17 31 0.08-
0.15
0.35 Max. 0.3-0.7 0.05 0.05
6 63 15 43 0.2 Max. 0.75 Max. 0.4-0.7 0.05 0.05
7 63 15 43 0.2 Max. 1.0 Max. 0.3-0.7 0.05 0.05
 
CSw-20 42 20 21 0.25 Max. 0.6 Max. 0.7 Max. 0.05 0.05
CSw-25 49 18 25 0.3 Max. 0.6 Max. 1.0 Max. 0.05 0.05


Grade Typical Application

1 to 7 Cast parts which are to withstand temperatures 300o-525o C
CSw-20
CSw-25
Parts to be fusion welded