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Steel Circle Delivery Forms1.2738 / 40CrMnNiMo8-6-4 Steel circles Mark and steel Dimensions supplied (mm) Steel circle 1.2738 / 40CrMnNiMo8-6-4 402 – 1202 Steel Round 1.2738 / 40CrMnNiMo8-6-4 General Overview Steel round 1.2738 (40CrMnNiMo8-6-4) is a high-quality pre-hardened tool steel with excellent machinability, toughness, and wear resistance. It is widely used in mold-making applications, particularly for […]
Steel Circle Delivery Forms1.2738 / 40CrMnNiMo8-6-4
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Steel circles |
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| Mark and steel | Dimensions supplied (mm) |
| Steel circle 1.2738 / 40CrMnNiMo8-6-4 | 402 – 1202 |
Steel Round 1.2738 / 40CrMnNiMo8-6-4
Steel round 1.2738 (40CrMnNiMo8-6-4) is a high-quality pre-hardened tool steel with excellent machinability, toughness, and wear resistance. It is widely used in mold-making applications, particularly for large plastic injection and compression molds.
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.35-0.45 |
| Silicon (Si) | 0.20-0.40 |
| Manganese (Mn) | 1.30-1.60 |
| Chromium (Cr) | 1.80-2.10 |
| Nickel (Ni) | 0.90-1.20 |
| Molybdenum (Mo) | 0.30-0.55 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.035 |
| Parameter | Value |
|---|---|
| Tensile Strength | 1100-1300 MPa |
| Hardness (Pre-Hardened) | 28-33 HRC |
| Impact Toughness | High |
| Thermal Conductivity | Good |
| Industry | Examples of Use |
|---|---|
| Mold-Making | Injection molds, compression molds, die casting tools |
| Mechanical Engineering | High-strength structural components |
| Automotive | Plastic mold tooling, forming dies |
| Tool Manufacturing | Large molds for plastic and rubber processing |
✅ Ready-to-use hardness – saves time and costs in production.
✅ High toughness – withstands high mechanical stress.
✅ Good polishing and texturing properties – ideal for surface finishing.
✅ Suitable for large mold applications – provides excellent dimensional stability.
Steel round 1.2738 is an excellent choice for mold-making and tooling applications that require high strength, toughness, and machinability.
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