Grade ML25
China ISC U40252
Corresponding Standard GB /T 6478-2015
Steels for Cold Heading and Cold Extruding
Classification Carbon Steel
Properties Forgability
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
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Reduction of Area
ψ
%
Hardness
HBW
d=25 (sample diameter) Normalizing
Temperature AC3 +30~50°C
≥450 ≥275 ≥23 ≥50 Hot Rolled State
≤170
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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