H11 | 1.2343 | SKD6
H11 (1.2343 / X37CrMoV5-1) is a chromium-molybdenum-vanadium hot work tool steel offering excellent toughness, high-temperature strength, and good thermal fatigue resistance. It provides good resistance to thermal cracking and softening, making it suitable for demanding hot working and die casting applications.
Available Form
Round Bar
Custom Diameter & Length
Flat Bar
Custom Thickness, Width & Length
Square Bar
Custom Width & Length
Steel Plate
Custom Thickness, Width & Length
Steel Grade Comparison
| W-Nr | EN | AISI | JIS |
| 1.2343 | X37CrMoV5-1 | H11 | SKD6 |
Chemical Composition(wt%)
| C | Si | Mn | Cr | Mo | V |
| 0.30-0.40 | 0.80-1.20 | 0.20-0.40 | 4.75-5.50 | 1.25-1.75 | 0.30-0.50 |
Physical Properties
Density: 7.80 g/cm³
Modulus of Elasticity: 215 GPa
Thermal Conductivity: 25.0 W/(m.K)
| Temperature | 20-100°C | 2-200°C | 2-300°C | 2-400°C |
| Coefficient of Thermal Expansion（×10-6） | 9.80 | 12.5 | 13.0 | 13.2 |
Heat Treatment Process
Hardening: Heat the steel evenly to 990~1020°C until the whole section reaches temperature. Then cool in air.
Annealing: Heat the steel to 840~900°C, hold it well at temperature, and then let it cool slowly inside the furnace.
Tempering: Heat the steel uniformly, hold it at the selected tempering temperature, and then allow it to cool in still air. Tempering temperature 540~650°C, hardness 54~38HRC
Application Fields
Die casting molds, forging Dies, hot Extrusion tools, hot shear blades, plastic processing components
Disclaimer: the information and data presented herein are typical values for reference and are not intended as warranties to readers.
