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
<=0.12
<=0.75
<=1.00
<=0.040
<=0.030
16.00-18.00
<=0.60
Mechanical Properties
Tensile Strength
>=420 MPa
Yield Strength
>=205 MPa
Elongation
>=22%
Hardness
<=183 HB
Condition
Annealed plate and strip; proof strength applies only when specified by the purchaser
More data from JIS G4304:2021
From the standard
Mechanical properties, annealed3 values
0.2 percent proof strength, min
205 MPa
Tensile strength, min
420 MPa
Elongation, min
22 %
0.2 percent proof strength applies only when specified by the purchaser. 1 N/mm2 = 1 MPa.
Source: JIS G 4304:2021, Table 11
Hardness, annealed3 scales
Brinell hardness HBW, max
183
Rockwell HRBW or HRBS, max
88
Vickers hardness HV, max
200
Any one of the hardness scales applies; if not specified the manufacturer selects. HRBW is used in case of dispute.
Source: JIS G 4304:2021, Table 11
Bend test2 values
Bend angle
180 deg
Inside radius
1.0 x thickness
No cracks on the outside of the test piece.
Source: JIS G 4304:2021, Table 11
Heat treatment (example, informative)1 setting
Annealing
780 to 850 deg C, rapid or slow cooling
Annex JA is informative; temperatures are examples.
Source: JIS G 4304:2021, Table JA.3
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