ASTM A36 Structural Steel Angle (L-Shape): Equal & Unequal Leg
ASTM A36/A6 · Published: 2026-06-01 · Updated: 2026-06-02
ASTM A36 structural steel angles are L-shaped hot-rolled sections available in equal-leg and unequal-leg configurations according to AISC standards, from L1×1×1/8 up to L8×8×1-1/8. Angles are the most versatile structural shape, used for bracing,...
ASTM A36 structural steel angles are L-shaped hot-rolled sections available in equal-leg and unequal-leg configurations according to AISC standards, from L1×1×1/8 up to L8×8×1-1/8. Angles are the most versatile structural shape, used for bracing, truss webs and chords, lintels, connection clips, tower legs, and framing connections. The 90° geometry provides two perpendicular legs for easy bolting or welding to gusset plates and other members. Hot-dip galvanizing or shop priming extends service life in exposed environments.
Quick Facts
| Category | Carbon Steel |
| Standard | ASTM A36/A6 |
| Density | 7.85 g/cm³ |
| Yield Strength | 250 MPa (36 ksi) |
| Tensile Strength | 400-550 MPa |
Global Equivalents & Cross-Reference
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Frequently Asked Questions
Can A36 angles be used for overhead lifting (below-the-hook)?
For lifting devices covered by ASME B30.20, A36 is generally acceptable for structural components. However, the design must include a minimum 5:1 safety factor based on ultimate strength, and welds must be designed per AWS D14.1. For critical lifting applications, specify A572 Gr 50 angles with Charpy testing to ensure adequate toughness.
References & International Standards
- ASTM International. Standard Specifications for Steel & Metal Alloys. astm.org
- International Organization for Standardization (ISO). Metallic Materials — Cross-Reference Database. iso.org
- American Iron and Steel Institute (AISI). Steel Grade Designations & Equivalents. steel.org
- European Committee for Standardization (CEN). EN Steel Standards & Numbering System. cencenelec.eu