Grade SNCM 815
Old Grade
Corresponding Standard JIS G 4103-1979
Nickel Chromium Molybdenum Steel
Classification Alloy Steel
SNCM 815 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo
Minimum Value 0.12 0.15 0.3 - - 0.7 4 - 0.15
Maximum Value 0.18 0.35 0.6 0.03 0.03 1 4.5 0.3 0.3
SNCM 815 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Elongation or Extension Rate
δ
%
Reduction of Area
ψ
%
Hardness
HBW
Impact Energy Absorption
KV2
J
Double Quenching and Tempering ≥1079 ≥12 ≥40 311~375 ≥69
New and Old Grade Replacement List
Corresponding Standard Grade
JIS G 4103-1979
Grade
Old Grade
JIS G 4053-2016
Grade
SNCM815 Corresponding Standards(Same grade name, different standards)

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