H-11 tool steel is a hot work steel that is represented by its excellent impact toughness. It consists of less vanadium than the commonly used H13 hot work tool steel. This gives it the higher toughness, with some reduction in wear resistance and temper resistance. H11 is a deep-hardening, air-hardening steel that gives minimal size change during heat treatment. It also has super resistance to thermal fatigue cracking (heat checking) and superb resistance to gross cracking and thermal shock when water cooled in service. Experts will recommend H11 for hot tooling applications where maximum resistance to cracking is required.
Specifications:
- UNS T20811
- DIN 1.2343
- AMS 6437
- AMS 6485
- AMS 6487
- AMS 6488
- ASTM A-681
- FED QQ-T-570
- SAE J437
- SAE J438
- SAE J467
- AISI 610
- ASTM A-579
- MIL-S-47262
Applications:
Hot punches, die casting dies, hot shear blades, forging dies, hot gripper dies and extrusion tooling.
H11 is used for highly stressed structural parts such as aircraft landing gear.