DIN 1.2343 Steel: The Performance Benchmark in High-Temperature Industrial Applications
2025-09-15 11:22As the European standard equivalent to AISI H11, 1.2343 steel has become the gold standard in hot-work tool steel due to its unique molybdenum-vanadium alloy system. Refined through vacuum degassing, this material offers exceptional purity and uniform microstructure, making it ideal for continuous high-temperature operations above 500°C.
1.2343 Steel Key Performance Advantages
1.2343 Steel Thermal Stability Breakthrough
Maintains ≥45 HRC hardness at 600°C
Low thermal expansion coefficient (11.8×10⁻⁶/°C, 20–600°C), outperforming conventional H13 steel
1.2343 Steel Superior Fatigue Resistance
>100,000 thermal fatigue cycles (tested under 200–600°C thermal shock)
Ideal for die-casting molds requiring continuous operation
1.2343 Steel Outstanding Wear Resistance
0.8 mg/km wear rate in dry friction tests (50N load, 200 rpm)
3x longer service life compared to standard hot-work steels
1.2343 Steel Industry Applications
| 1.2343 Steel Application | 1.2343 Steel Typical Components | 1.2343 Steel Performance Match |
|---|---|---|
| 1.2343 Steel Die Casting | Core pins, ejector sleeves | Heat crack resistance + 25 W/m·K thermal conductivity |
| 1.2343 Steel Forging | Connecting rod dies, mandrels | ≥25 J/cm² impact toughness |
| 1.2343 Steel Extrusion | Bushing liners, die holders | ≥800 MPa creep resistance (600°C) |
1.2343 Steel Processing Guidelines
1.2343 Steel Heat Treatment: 1020–1050°C oil quenching + double tempering (550–650°C) → 52–56 HRC
1.2343 Steel Welding: Preheat 300–350°C, slow cooling post-weld; AWS A5.29 ER90S-B9 filler recommended
1.2343 Steel Machining: Optimal 80–120 m/min cutting speed, 0.1–0.15 mm/tooth feed rate
1.2343 Steel Comparative Analysis vs. SKD61
1.2343 Steel Higher high-temperature hardness (+2 HRC at 600°C)
1.2343 Steel Superior tempering stability (peak hardness achieved at 50°C higher temperature)
1.2343 Steel Enhanced softening resistance (100°C higher continuous service limit)
summary
DIN 1.2343 steel is widely used in different industries due to its excellent performance and properties. Whether you are researching die-casting, forging, or extrusion, this type of steel is your choice. The key is to understand its characteristics, ensure high-quality procurement and regular maintenance.