Grade C30R
Corresponding Standard ISO 683-18-2014
Bright steel products
Classification Carbon Steel
C30R Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo More
Minimum Value 0.27 0.1 0.5 - 0.02 - - - - Cr+Mo+Ni≤0.63
Maximum Value 0.34 0.4 0.8 0.025 0.04 0.4 0.4 0.3 0.1
C30R 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
5≤t≤10 Cold drawn (+C) 610~910 ≥455 ≥6
10<t≤16 Cold drawn (+C) 570~870 ≥420 ≥7
16<t≤40 Cold drawn (+C) 550~850 ≥345 ≥8
40<t≤63 Cold drawn (+C) 520~820 ≥300 ≥9
63<t≤100 Cold drawn (+C) 480~780 ≥250 ≥9
16<t≤100 As-rolled + peeled (+SH) 480~680 145~198
16<t≤40 Quenched and tempered and peeled (+QT+SH) 550~750 ≥350 ≥20 ≥40
40<t≤100 Quenched and tempered and peeled (+QT+SH) 500~650 ≥300 ≥20 ≥40
C30R Corresponding Standards(Same grade name, different standards)

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