Czech Republic · CSN

1.1209

CSN EN 10083-2 — Steels for quenching and tempering. Technical delivery conditions for non alloy steels

Chemical composition

wt% · log scale
0.010.1110C0.52 – 0.6Cr0.4Cr+Mo+Ni0.63Mn0.6 – 0.9Mo0.1Ni0.4P0.03S0.02 – 0.04Si0.4
  • min – max range
  • typical value

Mechanical properties

value range by condition
HardnessHRsections, Surface Hardened, <= 100 mmYield strength Rp0.2T - thickness)Tensile strength RmT - thickness)Elongation AT - thickness)bars, open die forgings and die forgings +N, 100 < d <= 250 mm or 100 < t <= 250 mmYield strength Rp0.2T - thickness)Tensile strength RmT - thickness)Elongation AT - thickness)bars, open die forgings and die forgings +N, 16 < d <= 100 mm or 16 < t <= 100 mmYield strength Rp0.2T - thickness)Tensile strength RmT - thickness)Elongation AT - thickness)bars, open die forgings and die forgings +N, d <= 16 mm or t <= 16 mm

Chemical composition

ElementminmaxSimilarRemarks
C0.520.6
Cr0.4
Cr+Mo+Ni0.63If steels are ordered without mechanical requirements in the quenched and tempered or normalized condition
Mn0.60.9
Mo0.1
Ni0.4
P0.03
S0.020.04
Si0.4

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
sections, Surface Hardened, <= 100 mmHR ≥58 HRC
bars, open die forgings and die forgings +N, 100 < d <= 250 mm or 100 < t <= 250 mmT - thickness)T - thickness)T - thickness)
bars, open die forgings and die forgings +N, 16 < d <= 100 mm or 16 < t <= 100 mmT - thickness)T - thickness)T - thickness)
bars, open die forgings and die forgings +N, d <= 16 mm or t <= 16 mmT - thickness)T - thickness)T - thickness)
bars, open die forgings and die forgings +QT, 16 < d <= 40 mm or 8 < t <= 20 mmT - thickness)T - thickness)T - thickness)T - thickness)
bars, open die forgings and die forgings +QT, 40 < d <= 100 mm or 20 < t <= 60 mmT - thickness)T - thickness)T - thickness)T - thickness)
bars, open die forgings and die forgings +QT, d <= 16 mm or t <= 8 mmT - thickness)T - thickness)T - thickness)T - thickness)
bars, HBSemi-finished product treated to improved shearability (+S) 255
bars, open die forgings and die forgings +A, semi-finished products, flatsSteel bar HB

Heat treatment

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