AISI L6 Low-Alloy Tool Steel: Toughness for Heavy-Duty Cold Work

ASTM A600 · Published: 2026-06-01 · Updated: 2026-06-02

Quick Reference

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

CategoryTool Steel
StandardASTM A600
Density8.00 g/cm³
Yield Strength1,520 MPa (220 ksi) at 58-60 HRC
Tensile Strength1,760 MPa (255 ksi) at 58-60 HRC

Global Equivalents & Cross-Reference

Alternative Standard / GradeAction
EN 55NiCrMoV7 Compare
DIN 1.2714 Compare
SKT4 Compare

Related Materials

🧮 Material Weight Calculator

Calculate the weight based on this material's density: 8.00 g/cm³

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