Germany · DIN

C 70 W 1 / C 70 U

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Chemical composition

wt% · log scale
0.010.1110C0.65 – 0.74Mn0.1 – 0.25P0.03S0.03Si0.1 – 0.25
  • min – max range
  • typical value

Mechanical properties

value range by condition
Tensile strength Rm≤640 MPaHardnessHB

Chemical composition

ElementminmaxSimilarRemarks
C0.650.74
Mn0.10.25
P0.03
S0.03
Si0.10.25

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
bars, soft annealed≤640HB ≤190 HB30

Heat treatment

Type1
Heat-treatment curveHardness-Tempering
Heat-treatment curveCCT
Heat-treatment curveTTT