1.2083 ESR, Stavax ESR, 1.2316 ESR, 1.2344 ESR, H13 ESR, 1.2367 ESR
- Description
Description
1.2083 ESR, Stavax ESR, 1.2316 ESR, 1.2344 ESR, H13 ESR, 1.2367 ESR and 1.2738 ESR (P20+Ni ESR) Grade Mold Steel – Overview, Key Grades & Price.
Electroslag Remelted (ESR) mold steels are high-purity tool steels specifically processed for better toughness, cleanliness, and uniform microstructure.
They are widely used in plastic mold manufacturing, die-casting, and precision engineering applications where high polishability, wear resistance, and corrosion resistance are required.
Key ESR Mold Steel Grades & Their Applications
1. 1.2083 ESR (AISI 420 ESR, Stavax ESR)
🔹 Type: High-chromium stainless tool steel
🔹 Hardness: 50-54 HRC
🔹 Properties:
- Excellent corrosion resistance
- Superior polishability (for mirror-finish molds)
- High wear resistance
🔹 Applications:
✅ Plastic molds for corrosive materials (e.g., PVC, acetate)
✅ Optical & medical molds requiring a mirror finish
✅ Food & chemical processing molds
2. 1.2316 ESR
🔹 Type: High-chromium stainless mold steel
🔹 Hardness: 48-52 HRC
🔹 Properties:
- Better corrosion resistance than 1.2083 ESR
- High toughness & polishability
- Improved machinability
🔹 Applications:
✅ Medical & food-grade plastic molds
✅ Injection molds for aggressive plastics
3. 1.2738 ESR (P20+Ni ESR)
🔹 Type: Pre-hardened plastic mold steel
🔹 Hardness: 30-36 HRC (pre-hardened, no need for heat treatment)
🔹 Properties:
- Excellent machinability & polishability
- Good toughness & wear resistance
- Suitable for large plastic molds
🔹 Applications:
✅ Large automotive molds
✅ Household appliance mold production
4. 1.2344 ESR (H13 ESR)
🔹 Type: Hot-work tool steel
🔹 Hardness: 50-54 HRC
🔹 Properties:
- High thermal fatigue resistance
- Excellent toughness & wear resistance
- Can withstand high temperatures
🔹 Applications:
✅ Die-casting molds (Aluminum, Zinc, Magnesium)
✅ Hot-runner systems
5. 1.2367 ESR
🔹 Type: Advanced hot-work tool steel
🔹 Hardness: 50-54 HRC
🔹 Properties:
- Better heat resistance than 1.2344 ESR
- Enhanced wear resistance & toughness
- Less distortion after heat treatment
🔹 Applications:
✅ Aluminum die-casting molds
✅ Forging dies
Comparison of Key ESR Mold Steels
| Grade | Hardness (HRC) | Corrosion Resistance | Polishability | Wear Resistance | Applications |
|---|---|---|---|---|---|
| 1.2083 ESR (Stavax ESR, 420 ESR) | 50-54 | High | Very High | High | Optical, medical & high-finish plastic molds |
| 1.2316 ESR | 48-52 | Very High | High | Medium | Food-grade & aggressive plastic molds |
| 1.2738 ESR (P20+Ni ESR) | 30-36 | Medium | High | Medium | Large plastic molds (automotive, appliances) |
| 1.2344 ESR (H13 ESR) | 50-54 | Low | Medium | Very High | Die-casting, hot-runner molds |
| 1.2367 ESR | 50-54 | Low | Medium | Extremely High | High-temperature die-casting molds |
Conclusion
✅ For high-polish plastic molds: Choose 1.2083 ESR (Stavax ESR) or 1.2316 ESR
✅ For large plastic molds: Use 1.2738 ESR (P20+Ni ESR)
✅ For die-casting & hot molds: Use 1.2344 ESR (H13 ESR) or 1.2367 ESR
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