AISI L6 Low-Alloy Tool Steel: Toughness for Heavy-Duty Cold Work
ASTM A600 · Published: 2026-06-01 · Updated: 2026-06-02
A specialized tool steel grade for cutting, forming, or die applications. Proper heat treatment is critical to achieving optimal tool performance and life.
A specialized tool steel grade for cutting, forming, or die applications. Proper heat treatment is critical to achieving optimal tool performance and life.
Quick Facts
| Category | Tool Steel |
| Standard | ASTM A600 |
| Density | 8.00 g/cm³ |
| Yield Strength | 1,520 MPa (220 ksi) at 58-60 HRC |
| Tensile Strength | 1,760 MPa (255 ksi) at 58-60 HRC |
Global Equivalents & Cross-Reference
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Frequently Asked Questions
What is the typical hardness range?
As specified in the mechanical properties. The exact hardness depends on the austenitizing temperature, quench method, and tempering cycle. Always follow the manufacturer's heat treatment recommendation for the specific tool application.
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