- AISI H12
Standards : X37CrMoW 5-1
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.30 – 0.40 |
| Chromium (Cr) | 4.75 – 5.50 |
| Molybdenum (Mo) | 1.10 – 1.75 |
| Tungsten (W) | 0.90 – 1.40 |
| Vanadium (V) | 0.20 – 0.50 |
| Silicon (Si) | 0.80 – 1.20 |
| Manganese (Mn) | 0.20 – 0.50 |
| Phosphorus (P) | ≤ 0.03 |
| Sulfur (S) | ≤ 0.03 |
Grade Brief
H12 hot work Die Steel could be a five-hitter Cr, general hot work steel that is characterized by glorious impact toughness. It contains less vanadium than the widely-used H13 hot work tool steel, and also the tungsten content provides higher temper resistance. it has smart resistance to thermal fatigue cracking (heat checking) and excellent resistance to gross cracking and thermal shock once water cooled in commission.TLS H12 hot work tool steel is usually recommended for warm tooling applications wherever most resistance to cracking is needed. Such applications embrace hot punches, die casting dies, shaping dies, hot shear blades, hot gripper dies, and extrusion tooling.
General-purpose hot work steel with 4.75–5.5% chromium is known as AISI H12 tool steel. Vanadium content in H12 tool steel is (0.2–0.5%) lower than in the more popular H13 hot work tool steel (0.8–1.2%). A deep-hardening, air-hardening steel known as ASTM/AISI H12 experiences little size change following heat treatment. When water cooled in service, H12 tool steel material exhibits high resistance to gross cracking and thermal shock as well as good resistance to thermal fatigue cracking (heat cracking). Therefore, we may state that the following qualities best describe H-12 tool steel:
– Excellent resistance to wear, high strength at elevated temperatures.
– Good homogenizing with high toughness.
– Extra- fine- structure without grain-boundary carbide.
– Inclusion shape controlled with high cleanliness.
Mode of Supply
Kuber Multi Metals is the largest stockiest and supplier of H12 tool steel in flat, square and round bar. We provide steel in all sizes as your requirements. H12 die steel is available in flat, square and round shape. Consult our team who will assist you for H12 steel query.
Steel Properties
Excellent Resistance to Wear, High Strength at Elevated Temperature with good Homogenizing with High Toughness. Extra- Fine- Structure without Grain-Boundary Carbide.
| Property | Typical Value |
|---|---|
| Hardness | 44 – 52 HRC |
| Tensile Strength | ~1100 – 1400 MPa |
| Yield Strength | ~900 – 1100 MPa |
| Elongation (A5) | ≥ 10% |
| Impact Toughness (ISO-V) | ~25 – 35 J at room temp |
Physical Properties
Depending on the precise composition and heat treatment of the H10/ DIN 2365/ AISI H10 steel, the physical attributes may differ somewhat. Its always advisable to refer to the manufacturer’s specifications for accurate information.
| Temp. Range (°C) | 20–100 | 20–250 | 20–500 |
|---|---|---|---|
| Expansion Coefficient | 11.7 | 12.4 | 12.9 |
| Temperature (°C) | 20 | 250 | 500 |
|---|---|---|---|
| Thermal Conductivity | 24.2 | 25.6 | 28.0 |
Heat Treatment
| Process | Temperature Range | Notes |
|---|---|---|
| Soft Annealing | 800 – 850°C | Furnace cool to ~600°C, then air cool |
| Hardening | 1020 – 1050°C | Air or oil quench |
| Tempering | 500 – 650°C (2–3 cycles) | Double tempering recommended |
| Stress Relief | ~600°C | After heavy machining |
Application
High-performance die casting molds, Hot extrusion dies, Hot forging tools and punches, Shear blades for hot work, Tools exposed to high mechanical and thermal stress
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
