Grade 40SiMnVBE
China ISC A77406
Corresponding Standard GB /T 1222-2016
Spring Steels
Classification Spring Steel
Properties Elasticity
40SiMnVBE Chemical Element Composition Content (%)
Component C Si Mn P S Ni Cu * V B O
Minimum Value 0.39 0.9 1.2 - - - - 0.09 0.0008 -
Maximum Value 0.42 1.35 1.55 0.02 0.012 0.35 0.25 0.12 0.0035 0.0015
40SiMnVBE Mechanical Properties
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Reduction of Area
ψ
%
Hardness
HBW
Quenching and Tempering ≥1800 ≥1680 ≥9 ≥40 -
Hot Rolled (WHR) - - - - Negotiated Between Supplier and Buyer
Hot rolled + stress relief annealing (WHR+A) - - - - ≤321

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