Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C
Si
Mn
P
S
Cr
Ni
Al
<=0.09
<=0.70
<=1.00
<=0.040
<=0.015
16.0-18.0
6.5-7.8
0.70-1.50
Mechanical Properties
Tensile Strength
<=850 MPa
Hardness
<=255 HB
Condition
Solution annealed (+AT), conditions 1C, 1E, 1D, 1X, 1G and 2D; hardness as printed
More data from IS 6603:2024
From the standard
Mechanical properties by heat treatment condition1 conditions