Grade ML30Mn
Corresponding Standard GB /T 5953.1-2009
Steel Wire for Cold Heading and Cold Forging— Part 1: Intended for Heat Treatment
Classification Carbon Steel
ML30Mn Mechanical Properties
diameter
d
mm
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Reduction of Area
ψ
%
Hardness
HBW
d≤6 SALD 490~690 ≥55
6<d≤12 SALD 470~650 ≥55
12<d≤25 SALD 450~600 ≥50 HRB
≤89
d≤25 SA 380~560 ≥60 HRB
≤86
Approximate Comparison Table Cold Heading Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization France
GB ISC CNS JIS KS ASTM/AISI UNS ISO NF EN/NF
ML30Mn U41302 SWRCH33K SWRCH30K
SWRCH33K
SWRCH30K 1030 G10300 CE28E4 1C30
ML30Mn Corresponding Standards(Same grade name, different standards)

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