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Grade A877 Grade C
Corresponding Standard ASTM A877/A877M-2017
Steel Wire, Chromium-Silicon Alloys, Chrome-Silicon-Vanadium Alloy Valve Spring Quality
Classification Alloy Steel
A877 Grade C Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni V
Minimum Value 0.5 1.8 0.7 - - 0.85 0.2 0.05
Maximum Value 0.7 2.2 1 0.02 0.02 1.05 0.4 0.15
A877 Grade C Mechanical Properties
Tensile Strength
σb
Mpa 		Reduction of Area
ψ
%
2.0 2180~2280 ≥45
3.0 2080~2180 ≥45
3.75 2080~2180 ≥45
4.5 2035~2130 ≥45
5 1980~2090 ≥40
5.7 1980~2090 ≥40
6.3 1930~2035 ≥40
7.9 1880~1985 ≥40

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