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ASTM A 588-2005
Material Designation Chemical Composition (%)
Grade B
C Si Mn P S Cu Ni Cr V
Min - 0.15 0.75 - - 0.2 - 0.4 0.01
Max 0.2 0.5 1.35 0.04 0.05 0.4 0.5 0.7 0.1
Grade A
C Si Mn P S Cu Ni Cr V
Min - 0.3 0.8 - - 0.25 - 0.4 0.02
Max 0.18 0.65 1.25 0.04 0.05 0.4 0.4 0.65 0.1
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