Because of their exceptional strength, durability, and machinability, tool and die steel P20 bars are used extensively in the mold-making and tooling industries. They are perfect for producing blow moulds, die-casting dies, extrusion dies, and injection moulds made of plastic. P20 Bars are also utilised in tools that need to be highly polished and have precise tolerances, like moulds for consumer electronics, home appliance parts, and automobile components. They are appropriate for high-production settings because of their pre-hardened state, which lowers processing time and expense. Long service life and reliable performance under demanding working conditions are also guaranteed by their superior dimensional stability and wear resistance.
Carbon (0.32–0.45%), chromium (4.75–5.50%), molybdenum (1.10–1.75%), vanadium (0.80–1.20%), and silicon (0.80–1.20%) make up the balanced composition of Tool and Die Steel H13 Bars. These components support superior toughness, hardness retention, and resistance to heat fatigue. After heat treatment, mechanical characteristics include hardness ranging from 48 to 52 HRC, yield strength of 1200 MPa, and tensile strength of approximately 1450 MPa. Because of its exceptional red hardness and dimensional stability, H13 steel is perfect for hot working processes like die casting, extrusion, and forging.
| ASTM A681 | C | Mn | P | S | Si | Cr | V | Mo | ||||||
| H13 | 0.32 | 0.45 | 0.2 | 0.6 | 0.03 | 0.03 | 0.8 | 1.25 | 4.75 | 5.5 | 0.8 | 1.2 | 1.1 | 1.75 |
| DIN ISO 4957 | C | Mn | P | S | Si | Cr | V | Mo | ||||||
| 1.2344 /X40CrMoV5-1 | 0.35 | 0.42 | 0.25 | 0.5 | 0.03 | 0.02 | 0.8 | 1.2 | 4.8 | 5.5 | 0.85 | 1.15 | 1.1 | 1.5 |
| JIS G4404 | C | Mn | P | S | Si | Cr | V | Mo | ||||||
| SKD61 | 0.35 | 0.42 | 0.25 | 0.5 | 0.03 | 0.02 | 0.8 | 1.2 | 4.8 | 5.5 | 0.8 | 1.15 | 1.0 | 1.5 |
| Properties | Metric | Imperial |
| Tensile strength, ultimate (@20°C/68°F, varies with heat treatment) | 1200 – 1590 MPa | 174000 – 231000 psi |
| Tensile strength, yield (@20°C/68°F, varies with heat treatment) | 1000 – 1380 MPa | 145000 – 200000 psi |
| Reduction of area (@20°C/68°F) | 50.00% | 50.00% |
| Modulus of elasticity (@20°C/68°F) | 215 GPa | 31200 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Country | USA | German | Japan |
| Standard | ASTM A681 | DIN EN ISO 4957 | JIS G4404 |
| Grades | H13 | 1.2344/X40CrMoV5-1 | SKD61 |
| Properties | Conditions | ||
|---|---|---|---|
| T (ºC) | Treatment | ||
| Thermal expansion | 10.4 x 10-6/ºC | 20-100 | – |
| Thermal conductivity | 28.6 W/mK | 215 | – |
When choosing Tool and Die Steel H13 bars, consider factors such as hardness, heat resistance, wear resistance, toughness, machinability, and the specific requirements of the application, including temperature and load conditions.
Tool and Die Steel H13 bars offer limited corrosion resistance due to their high alloy content, but they can still be susceptible to rusting in harsh environments. To improve corrosion resistance, they may require additional surface treatments like coating or regular maintenance to prevent degradation.
Industries that require high-performance tooling under severe mechanical and thermal stress frequently use tool and die steel H13 bars. These bars are perfect for producing plastic injection moulds, pressure die casting moulds, extrusion dies, and hot forging dies. They are appropriate for tools used in high-temperature settings due to their superior wear and thermal shock resistance. Additionally, punches, shear blades, and core pins are made using H13 bars. They are vital in the heavy engineering, automotive, and aerospace industries because of their capacity to retain hardness and toughness under repeated heating and cooling cycles, which guarantees extended tool life and accuracy.
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