AISI
American Iron and Steel Institute
4037
ASTM
Specification or Grade
L7A
Other Names
Corresponding Standard ASTM A 320-2000
Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for Low-Temperature Service
Classification Alloy Steel
Chemical Element Composition Content (%)
Component C Si Mn P S Mo
Minimum Value 0.35 0.15 0.7 - - 0.2
Maximum Value 0.4 0.35 0.9 0.035 0.04 0.3

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