Germany · DIN

50 C 4

DIN 1669

Chemical composition

wt% · log scale
0.010.1110C0.45 – 0.55Cr0.9 – 1.2Mn0.6 – 0.9P0.035S0.035Si0.4
  • min – max range
  • typical value

Mechanical properties

value range by condition
Yield strength Rp0.2≥1200 MPaTensile strength Rm≥1350 MPaElongation A≥6 %HardnessHB

Chemical composition

ElementminmaxSimilarRemarks
C0.450.55
Cr0.91.2
Mn0.60.9
P0.035
S0.035
Si0.4

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
quenched and tempered≥1200≥1350≥6HB 385–445