Grade SMnC443
Old Grade
Corresponding Standard JIS G 4106-1979
Manganese Steels and Manganese Chromium Steels for Machine Structural Use
Classification Alloy Steel
SMnC443 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu
Minimum Value 0.4 0.15 1.35 - - 0.35 - -
Maximum Value 0.46 0.35 1.65 0.03 0.03 0.7 0.25 0.3
SMnC443 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Reduction of Area
ψ
%
Hardness
HBW
Impact Energy Absorption
KV2
J
Quenching + Tempering ≥932 ≥785 ≥13 ≥40 269~321 ≥49
New and Old Grade Replacement List
Corresponding Standard Grade
JIS G 4106-1979
Grade
Old Grade
JIS G 4053-2016
Grade
SMnC443 Corresponding Standards(Same grade name, different standards)

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