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High Strength
ASTM A-516 Gr. 70 (PVQ)
Four tensile strength ranges intended for use in moderate and lower temperature applications. Intended primarily for service in welded pressure vessels where improved notch toughness is required.
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TYPICAL ANALYSIS |
A-516 Grade 70 |
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Up thru ½ |
Over ½ thru 2 |
Over
2 thru 4 |
Over
4 |
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Carbon (C) max % |
- |
.27 |
.28 |
.30 |
.31 |
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Manganese (Mn) % |
.85/1.20 |
.85/1.20 |
.85/1.20 |
.85/1.20 |
.85/1.20 |
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Phosphorus (P) max % |
.035 |
.035 |
.035 |
.035 |
.035 |
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Sulphur (S) % |
.035 |
.035 |
.035 |
.035 |
.035 |
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Silicon (Si) max % |
.15/.40 |
.15/. 40 |
.15/. 40 |
.15/.40 |
.15/. 40 |
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TENSILE STRENGTH |
70,000-90,000 psi |
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MIN. YIELD STRENGTH (Yield Point if designated YP) |
38,000 psi |
High Strength
ASTM A-572 Gr. 50
This low alloy steel plate offers an optimum combination of strength, weldability and notch toughness with economy. Applications include; bridges, buildings, automotive and truck parts, railroad cars, cargo containers, tote boxes, LP gas cylinders, construction equipment, line pipe and structural tubing, lighting standards and transmission poles.
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TYPICAL ANALYSIS* |
A-572 Grade 50 |
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Up thru 1½ |
Over 1½ |
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Carbon (C) max % |
.23 |
.23 |
.23 |
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Manganese (Mn) max % |
1.35** |
1.35** |
1.35** |
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Phosphorus (P) max % |
.04 |
.04 |
.04 |
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Sulphur (S) max % |
.05 |
.05 |
.05 |
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Silicon (Si) % |
- |
.40 max |
.15/.40 |
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Other Elements |
.01/.15 V |
.01/.15 V |
.01/.15 V |
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MIN. TENSILE STRENGTH |
65,000 psi |
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MIN. YIELD STRENGTH (Yield Point if designated YP) |
50,000 psi |
*Post-weld heat treatment may degrade head-affected zone strength and toughness. Pretesting of specific welding and post-weld heattreating procedures is recommended to assure optimization of final property levels.
**1.50 max. Mn permissible with reduction of carbon maximum of .03%.
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