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
Ni
Cr
Mo
Cu
N
<=0.020
<=0.80
<=1.00
<=0.030
<=0.015
17.50-19.50
19.00-21.00
6.00-7.00
0.50-1.00
0.16-0.25
Mechanical Properties
Tensile Strength
>=650 MPa
Yield Strength
>=300 MPa
Elongation
>=35%
Hardness
<=223 HB
Condition
Solution heat treated plate and strip; 0.2 percent proof strength applies only when specified by the purchaser