United States · SAE

1021

SAE J 1397:1992 — SAE J 1397

Chemical composition

wt% · log scale
0.00010.0010.010.1110B0.0005 – 0.003C0.18 – 0.23Cu0.2Mn0.6 – 0.9P0.04Pb0.1 – 0.35S0.05Si0.1
  • min – max range
  • typical value

Mechanical properties

value range by condition
Yield strength Rp0.2≥390 MPaTensile strength Rm≥470 MPaElongation A≥15 %HardnessHBbars, cold drawn, 20 < d <= 30 mmYield strength Rp0.2≥230 MPaTensile strength Rm≥420 MPaElongation A≥24 %HardnessHBbars, hot rolled, 20 < d <= 30 mm

Chemical composition

ElementminmaxSimilarRemarks
B0.00050.003When requiredWhen required
C0.180.23
Cu0.2When requiredWhen required
Mn0.60.9
P0.04
Pb0.10.35When requiredWhen required
S0.05
Si0.1or 0or 0

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
bars, cold drawn, 20 < d <= 30 mm≥390≥470≥15HB ≤131
bars, hot rolled, 20 < d <= 30 mm≥230≥420≥24HB ≤116