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A490 Strength Requirements

Grade Marking Specification Material and Treatment Nominal Size (In.) Mechanical Properties Hardness Rockwell
Proof Load Min (ksi) Yield Strength Min (ksi) Tensile Strength Min (ksi) Elong % Min [9] RA % Min [10] Min Max
a490 A490 Type 1 Medium Carbon Alloy Steel, Q & T 1⁄2" - 11⁄2" 120 130 150 min 173 max 14 40 C33 C38
a354bd A354 Grade BD [6] Medium Carbon Alloy Steel, Q & T 1⁄4" - 21⁄2"25⁄8" - 4" 120105 130115 150140 14 40 C33C31 C39C39
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