Alloy Steel Castings for High Temperature Service
(IS : 3038-1965, IS : 2856-1964)
Grades Tensile strength, Min. kgf/mm2 Elongation percent Min. Yield stress or 0.5% proof stress Min. kgf/mm2 C
%		 Si
%		 Mn
%		 S
%		 P
%		 Typical Applications
1 55 17 35 0.2-0.25 0.15-4.4 1.25-1.45 0.05 0.05 Cast parts which are to withstand temperatures
300o-525o C
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 Parts to be fusion welded
CSw-25 49 18 25 0.3 Max. 0.6 Max. 1.0 Max. 0.05 0.05