AISI D2 Tool Steel (DIN 1.2379) is a high-carbon, high-chromium air-hardening cold-work tool steel, well-known for its excellent wear and abrasion resistance. When heat-treated, it can achieve hardness levels of 58-62 HRC, making it a top choice for applications that demand both durability and toughness.
While traditional hardening methods like flame, induction, and oven-based techniques have been used for decades, they often come with a downside—significant distortion. This requires additional steps, like double or triple tempering, to mitigate cracking risks. However, these extra steps add time and cost to the manufacturing process.
Why Choose Laser Hardening for D2 Tool Steel?
Laser hardening offers a more precise and controlled hardening solution for AISI D2 tool steel, addressing many of the challenges posed by conventional techniques.
Key Benefits:
- Typical Hardness with Laser Process: 58-64 HRC
- Hardening Depth: 0.040” – 0.060” (1-1.5 mm)
- Minimal Distortion: Laser hardening greatly reduces or eliminates distortion,
minimizing the need for costly post-processing like hard milling or straightening. - No Additional Tempering Required: Unlike traditional methods that often
require double or triple tempering to reduce cracking, laser-hardened D2 steel
does not need this extra step.
Picture 1: Laser Heat treated AISI D2 coupon (5x magnification)
Picture 2: Laser Heat treated AISI D2 coupon (50x magnification)
Graph 1: Hardness graph of Laser Hardened D2 tool steel demonstrating a hardness of 64 HRC at the surface
Summary:
Laser Hardening on D2 not only enhances the efficiency of the process but can also reduce overall manufacturing costs by up to 20% by eliminating subsequent operations such as tempering and hardmilling. By opting for laser hardening, manufacturers gain a competitive edge in producing high-wear, high-toughness components while maintaining dimensional stability and lowering production expenses.
Laser hardening is a modern, cost-effective way to fully leverage the strengths of AISI D2 tool steel without the downsides of traditional methods.
For more information visit our Laser Heat Treating page or contact us at info@synergyadditive.com