Grade 30CrNiMo8
Corresponding Standard ISO 683-18-2014
Bright steel products
Classification Alloy Steel
30CrNiMo8 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo
Minimum Value 0.26 0.1 0.5 - - 1.8 1.8 - 0.3
Maximum Value 0.34 0.4 0.8 0.025 0.035 2.2 2.2 0.4 0.5
30CrNiMo8 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
Impact Energy Absorption
KV2
J
16<t≤100 S.annealed +peeled (+A +SH) ≤248
16<t≤40 Quenched and tempered and peeled (+QT+SH) 1030~1230 ≥850 ≥12 ≥30
40<t≤100 Quenched and tempered and peeled (+QT+SH) 980~1180 ≥800 ≥12 ≥35
Approximate Comparison Table
China Japan International Organization for Standardization Germany European Standard
GB ISC JIS ISO DIN EN/DIN W-Nr. EN Numerical Grade
30Cr2Ni2Mo A50300 SNCM431 30CrNiMo8 30CrNiMo8 1.6580 30CrNiMo8 1.6580

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