Grade 25CrMo4
1.7218
Old Grade
Corresponding Standard NF EN 10083-3-2006
Tempered alloy structural steel
Classification Alloy Steel
25CrMo4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo
Minimum Value 0.22 - 0.6 - - 0.9 0.15
Maximum Value 0.29 0.4 0.9 0.025 0.035 1.2 0.3
25CrMo4 Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Reduction of Area
ψ
%
Hardness
HBW
Impact Energy Absorption
KV2
J
Steel: d ≤ 16mm; t ≤ 8mm Quenching + Tempering (+QT) 900~1100 ≥700 ≥12 ≥50
Steel: 16mm ≤ d ≤ 40mm; 8mm ≤ t ≤ 20mm Quenching + Tempering (+QT) 800~950 ≥600 ≥14 ≥55 ≥50
Steel: 40mm ≤ d ≤ 100mm; 20mm ≤ t ≤ 60mm Quenching + Tempering (+QT) 700~850 ≥450 ≥15 ≥60 ≥50
Steel: 100mm ≤ d ≤ 160mm; 60mm ≤ t ≤ 100mm Quenching + Tempering (+QT) 650~800 ≥400 ≥16 ≥60 ≥45
Steel: Processed to a Certain Shearability (+S) ≤255
Steel: Softening Annealing (+A) ≤212

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