Grade ML25
Corresponding Standard GB /T 5953.1-2009
Steel Wire for Cold Heading and Cold Forging— Part 1: Intended for Heat Treatment
Classification Carbon Steel
ML25 Chemical Element Composition Content (%)
Component C Si Mn P S
Minimum Value 0.23 0.1 0.3 - -
Maximum Value 0.28 0.3 0.6 0.025 0.025
ML25 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 Russia
GB ISC CNS JIS KS ASTM/AISI UNS NF EN/NF GOST
ML25 U40252 SWRCH20K SWRCH20K SWRCH20K 1025 G10250 XC25
FR28
25
ML25 Corresponding Standards(Same grade name, different standards)

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