Detailed
H11 | 1.2343 | SKD6 Tool Steel
1.CHARACTER
1.2343 Chromium hot work tool steels are designated as group H steels according to the AISI classification system. This series of steels start from H1 to H19. The most commonly used chromium hot work steels are H11, H12, and H13, which can be air hardened in 150 mm thick sections. The steels are subjected to minimal distortion during hardening due to their balanced alloy content. The tools produced from chromium hot work steels can be cooled using water without damage as these steels have low carbon and alloy contents.This article will give an overview of H11 chromium hot work steels, which have low carbon content and good toughness. These hot work steels can be deep hardened by heat treatment and air-quenching.
2.AISI H11 Steel Grade:
Country | China | USA | German | Japan |
Grades | 4Cr5MoSiV | H11/T20811 | 1.2343/X37CrMoV5-1 | SKD6 |
H11 Tool Steel Chemical Composition(%):
Steel Grade | C | Si | Mn | P | S | Cr | Mo | V |
4Cr5MoSiV | 0.33/0.43 | 0.80/1.20 | 0.20/0.50 | ≤0.030 | ≤0.030 | 4.75/5.50 | 1.10/1.60 | 0.30/0.60 |
H11/T20811 | 0.33/0.43 | 0.80/1.20 | 0.20/0.50 | ≤0.030 | ≤0.030 | 4.75/5.50 | 1.10/1.60 | 0.30/0.60 |
1.2343/X37CrMoV5-1 | 0.36/0.42 | 0.90/1.20 | 0.30/0.50 | ≤0.030 | ≤0.030 | 4.80/5.80 | 1.10/1.40 | 0.25/0.50 |
3.SUPPLY RANGE:
Surface Finish: Black, Peeled, Machined/Turned or as per given requirements.
Forged Round Bar: 20mm - 650mm (Dia)
Rolled Bars: 12mm - 360mm (Dia)
Forged flats: 30-400mm(T)*500-1200mm(W)
Rolled flats: 10-360mm(T)*30-1020mm(W)
Other sizes of O1 material or as per customer’s requirements.
4.AISI H11 Tool Steel Heat Treatment
Annealing of H-11 steel
Anneal at 871°C and slow cool at 4.4°C per hour or less in the furnace.
Tempering of Steel H11
Temper at 537°C to 648°C for Rockwell C hardness of 54 to 38. Double tempering for one hour each time at the selected tempering temperature is recommended.
5.Applications of AISI H11 Tool Steel
H11 alloy steel is often used for highly stressed structural parts such as aircraft landing gear.
Some typical applications: Hot punches, die casting dies, forging dies, hot shear blades, hot gripper dies, and extrusion tooling.
The tools produced from H11 chromium hot-work steels can be cooled using water without damage as these steels have low carbon and alloy contents.
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