ASTM A291/A291M Standard Specification for Steel Forgings, Carbon and Alloy, for Pinions, Gears and Shafts for Reduction Gears, Top Tubes & Pipes Supplier

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ASTM A291/A291M

Grade 1 Class A	Grade 3 Class C	Grade 4 Class E	Grade 6 Class G	Grade 8 Class I	Grade 9 Class J

Grade 2 Class B	Grade 3A Class D	Grade 5 Class F	Grade 7 Class H

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