Grade ML25Mn
Corresponding Standard GB /T 5953.1-2009
Steel wire for cold heading and cold forging— Part 1: Intended for heat treatment
Classification Carbon Steel
ML25Mn Chemical Element Composition Content (%)
Component C Si Mn P S
Minimum Value 0.23 0.1 0.6 - -
Maximum Value 0.28 0.3 0.9 0.025 0.025
ML25Mn 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 France
GB ISC CNS JIS KS ASTM/AISI UNS NF EN/NF
ML25Mn U41252 SWRCH27K SWRCH25K
SWRCH27K
SWRCH25K 1026 G10260 1C25

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