China · YB

40Mn2

YB/T 037:1993 — Quality structure cold-draw flat steels

Chemical composition

wt% · log scale
0.010.1110C0.37 – 0.44Cr0.3Mn1.4 – 1.8Ni0.3P0.035S0.035Si0.17 – 0.37
  • min – max range
  • typical value

Mechanical properties

value range by condition
Yield strength Rp0.2≥735 MPaYield strength Rp0.2≥735 MPaTensile strength Rm≥885 MPaTensile strength Rm≥885 MPaElongation A≥12 %Elongation A≥12 %Reduction of area Z≥45 %Reduction of area Z≥45 %HardnessHBHardnessHB

Chemical composition

ElementminmaxSimilarRemarks
C0.370.44
Cr0.3
Mn1.41.8
Ni0.3
P0.035
S0.035
Si0.170.37

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
cold drawnflats/bars, cold drawn or heat treated≥735≥885≥12≥45HB ≤217；HB ≤269