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ASTM A709 Grade 100 steel
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ASTM A709 Grade 100 steel

ASTM A709 Grade 100 steel specification for Structural Steel for Bridges.

ASTM A709 Grade 100 steel is carbon and high-strength low-alloy steel structural shapes, plates, and bars and quenched and tempered alloy steel.

ASTM A709 Grade 100 material chemical composition

Grade C Mn P max S max Si Cr
Grade 100 0.15-0.21 0.80-1.10 0.035 0.035 0.40-0.80 0.50-0.80

ASTM A709 Grade 100 structural steel mechanical properties

Grade Steel plate thickness,mm Section steel thickness,mm Yield strength [mpa] Tensile strength [mpa] Elongation min %
Steel plate Section steel
8in[200mm] 2in[50mm] 8in[200mm] 2in[50mm]
100 ≤65 ... [690]min 760-895 ... 18 ... ...
65-100 [620]min 690-895 ... 16 ... ...

When the ASTM A709 Grade 100 steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized. See Appendix X3 of Specification A 6/A 6M for information on weldability.

A6/A6M Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling

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