ASTM A529 Shapes, Plates, and Bars
ASTM A529 is a specification for carbon-manganese structural steel. The two available grades are Grade 50 and Grade 55. ASTM A529 steel is intended for buildings and other general structures.
For a similar structural steel with lower strength levels, see ASTM A36.
Available Designations
- Structural Steel: furnished to a chemical composition and defined mechanical properties
Listed Designations
A529 Structural SteelA
- Grade 50
- Grade 55
A Yield strength, tensile strength, and elongation guaranteed in the transverse direction
ASTM A529 Characteristics
Increased carbon content is associated with increased hardenability, leading to the risk of cracking after welding. ASTM A529 has a maximum carbon limit of 0.27%, which is relatively high.
Steel Warehouse can limit carbon contents to improve thermal cutting, formability, and welding performance.
Welding, thermal cutting, and basic forming may be more difficult than with a standard HSLA Grade 50 or a structural steel of lower strength levels due to rich alloy contents.
ASTM A786 has a maximum material thickness of one inch.
Laser and plasma cutting is similar to weldability in terms of the heated cut edge hardening and cracking.
ASTM A529 refers to ASTM A6 for bending guarantees.
Available Customizations
- Pickling
- Slitting
- Temper Passing
- Shearing
- Blanking
- Laser Cutting
Notes from the Technical Group
- If product weight is a concern, Ask an Expert about using HSLA products of equivalent grades for lightweighting.
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