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
N
<=0.030
<=1.00
<=2.00
<=0.045
<=0.030
11.00-15.00
18.00-20.00
3.00-4.00
0.10-0.22
Mechanical Properties
Tensile Strength
>=550 MPa
Yield Strength
>=245 MPa
Elongation
>=40%
Hardness
<=217 HB
Condition
Solution heat treated plate and strip; 0.2 percent proof strength applies only when specified by the purchaser