Grade ML04Al
Corresponding Standard GB /T 5953.2-2009
Steel Wire for Cold Heading and Cold Forging— Part 2: Not Intended for Heat Treatment
Classification Carbon Steel
ML04Al Chemical Element Composition Content (%)
Component C Si Mn P S Al
Minimum Value - - 0.2 - - 0.02
Maximum Value 0.06 0.1 0.4 0.035 0.035 -
ML04Al Mechanical Properties
diameter
d
mm
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Reduction of Area
ψ
%
Hardness
HBW
d≤3 HD ≥460 ≥50
3<d≤4 HD ≥360 ≥50
4<d≤5 HD ≥330 ≥50
5<d≤25 HD ≥280 ≥50 HRB
≤85
d≤25 SALD 300~450 ≥70 HRB
≤76
Approximate Comparison Table Steel for Cold Heading and Cold Extrusion
China United States International Organization for Standardization European Standard
GB ISC ASTM ISO EN Numerical Grade
ML04Al U40048 1005 CC4A
C4C
C4C 1.0303

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