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ASTM A572 Grade 42 and Garde 50 low alloy steel
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ASTM A572 Grade 42 and Garde 50 low alloy steel

ASTM A572 standard specification covers five grades of high-strength low-alloy structural steel shapes, plates, sheet piling, and bars. Grades 42 [290], 50 [345], and 55 [380] are intended for riveted, bolted, or welded structures. Grades 60 [415] and 65 [450] are intended for riveted or bolted construction of bridges,or for riveted, bolted, or welded construction in other applications.

For A572 Gr42/50 steel applications, such as welded bridge construction,where notch toughness is important, notch toughness requirements are to be negotiated between the purchaser and the producer.

ASTM A572 Grade 42 and Garde 50 material chemical composition

Grade C max,% Mn max,% P max,% S max,% Si
Plate to 11/2 in.[40mm]thick,shapes with flange or leg thick to 3in[75mm]inclusive sheet piling,bars,zees,and rolled tees Plates over 11/2 in.[40mm]thick,and shapes with flange thickness over 3in[75mm]
Max,% Range,%
42[290] 0.21 1.35 0.04 0.05 0.40 0.15-0.40
50[345] 0.23 1.35 0.04 0.05 0.40 0.15-0.40

A572 Grade 42 and Garde 50 low alloy steel mechanical properties

Grade Yield point,min Tensile strength,min Min elongation,%
Ksi [mpa] ksi [mpa] In 8 in[200 mm] In 2 in[50mm]
42[290] 42 [290] 60 [415] 20 24
50[345] 50 [345] 65 [450] 18 21

If you need ASTM A572 Gr42/50 steel,and want to know more about ASTM A572 Grade 42 price  and A572 Garde 50 specification,welcome to contact katalor enterprises !

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