- H11
Standards : X40CrMoV5
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.35 – 0.40 |
| Chromium (Cr) | 4.75 – 5.50 |
| Molybdenum (Mo) | 1.10 – 1.75 |
| Vanadium (V) | 0.25 – 0.50 |
| Silicon (Si) | 0.80 – 1.20 |
| Manganese (Mn) | 0.20 – 0.50 |
| Iron (Fe) | Balance |
Grade Brief
H-11 is a 5% chromium hot work tool steel with excellent impact toughness and good resistance to thermal fatigue cracking. Compared to H13, it contains less vanadium, which results in higher toughness but somewhat reduced wear resistance and temper resistance. It is a deep-hardening, air-hardening steel with minimal size change during heat treatment. H11 performs well under conditions involving thermal shock and water cooling.
Note: Specialty steel products are available upon request and all stock is subject to mill availability.
Key Features
- Excellent impact toughness
- Higher toughness than H13 (due to lower vanadium content)
- Good thermal fatigue cracking resistance (heat checking)
- Excellent resistance to gross cracking & thermal shock
- Minimal size change during hardening
- Air-hardening, deep-hardening steel
Mode of Supply
Kuber Multi Metals is the largest stockiest and supplier of H11 tool steel in flat, square and round bar. We provide steel in all sizes as your requirements. H11 die steel is available in flat, square and round shape. Consult our team who will assist you for h11 steel query.
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ~1860 MPa |
| Yield Strength | ~1500 MPa |
| Hardness (as delivered, annealed) | ~197 HB |
| Hardness (after heat treatment) | 46 – 50 HRC |
| Elongation | ~10 – 12 % |
| Impact Toughness (Charpy V-notch) | High |
Heat Treatment & Processes
| Process | Temperature Range | Notes |
|---|---|---|
| Annealing | 800 – 840°C | Furnace cool at max. 20°C/hr to 600°C, then air cool |
| Stress Relieving | ~650°C | After machining, slow cool |
| Hardening | 1000 – 1050°C | Preheat in 2 steps (600–650°C, 850–900°C), then heat to final temp |
| Quenching | Air or oil | Air cooling preferred (minimal distortion) |
| Tempering | 540 – 650°C | Double temper recommended; hardness 46–50 HRC |
Equivalent Grades
| Standard | Designation |
|---|---|
| AISI | H11 |
| DIN | X37CrMoV5-1 |
| Werkstoff Nr. | 1.2343 |
| UNS | T20811 |
| BH | BH11 |
Application
Hot punches, Die casting dies, Forging dies, Hot shear blades, Hot gripper dies, Extrusion tooling.
Conclusion
H-11 hot work tool steel offers an exceptional balance of toughness, resistance to cracking, and dimensional stability during heat treatment. Its lower vanadium content compared to H13 provides higher impact toughness, making it especially suitable for demanding hot work applications where resistance to thermal shock and gross cracking is critical. With reliable performance in die casting, forging, extrusion, and hot shear operations, H11 is a proven choice for tooling that requires maximum durability under severe service conditions.
Addition to other Grades
HCHCR-D2 Steel , HCHCR-D3 Steel , P20+Ni Steel , P20 Steel , P20 HH , Stavax ESR , DB6 Steel , H13 Steel, H11 Steel, H21 Steel, H10 Steel, H12 Steel, M2 Steel, M35 Steel, M42 Steel, T1 Steel, C 45, MS Steel, En 31, En 24 , En 353 , En 19 , En 8 , En 8D , En 9 , En 47 , 20 Mncrs , SAE8620 , DIN 2379 Steel, DIN 2080 Steel, DIN 2738 Steel, DIN 2311 Steel, DIN 2714 Steel, DIN 2344 Steel , DIN 2343 Steel, DIN 2581 Steel, DIN 2365 Steel, DIN 2606 Steel, DIN 3343 Steel, DIN 3243 Steel, DIN 3247 Steel, DIN 3355 Steel , AISI D2 Steel, AISI D3 Steel, AISI P20+Ni Steel, AISI P20 Steel, AISI L6 Steel, AISI H13 Steel, AISI H11 Steel, AISI H21 Steel, AISI H10 Steel, AISI H12 Steel, AISI M2 Steel , AISI M35 Steel, AISI M42 Steel , AISI T1 Steel
