H10 steel (1.2365) is a hot work tool steel known for its excellent toughness, resistance to thermal fatigue, and ability to withstand high temperatures. Hot work, chromium-molybdenum type tool steel that exhibits excellent resistance to softening at elevated tempertaure. In addition to its superior anti-tempering softening resistance, this premium hot work tool steel produced by Toolman has outstanding thermal fatigue resistance and can be water cooled during the use.. It is commonly used in applications requiring significant impact and heat resistance, making it ideal for hot forging, extrusion, and die-casting applications.
Properties
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High toughness
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Extreme high temperature strength
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High temperature creep resistance
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High temperature softening resistance
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Fine crystallisation
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Uniform spheroidizing microstructure
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Good cleanliness
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Tungsten-free special hot work tool steel on a CrMoV base with good toughness. Insensitive to thermal shock, and thus not susceptible to heat cracking. Particularly suitable for water cooling.
Chemical Composition
| Element | C (%) | Si (%) | Mn (%) | P (≤ %) | S (≤ %) | Cr (%) | Mo (%) | V (%) |
|---|---|---|---|---|---|---|---|---|
| Value | 0.28-0.35 | 0.10-0.40 | 0.15-0.45 | 0.03 | 0.03 | 2.70-.3.20 | 2.60-3.00 | 0.40-0.70 |
Mechanical Properties
| Property | Value |
|---|---|
| Hardness (HBW) | 229 max (Annealed) |
| Hardness After Quenching (hardenability) (HRC) | 47 min (Annealed) |
| Yield Strength | 1000 MPa |
| Tensile Strength | 1200 MPa |
| Elongation | 10% |
| Impact Toughness | 25 J (at room temperature) |
Physical Properties
| Property | Value |
|---|---|
| Density (g/cm³) | 7.8 g/cm³ |
Modulus of Elasticity
| Temperature (°C) | GPa |
|---|---|
| 500 | 176 |
| 600 | 165 |
Thermal Properties
| Temperature (℃) | Thermal Expansion Coefficient (10^-6/℃) |
|---|---|
| 500 | 13.2 |
| 600 | 13.4 |
Thermal Conductivity
| Temperature (℃) | W/m•K |
|---|---|
| 500 | 30.1 |
| 600 | 29.7 |
Heat treatment
| Heat Treatment | Temperature | Duration | Cooling |
|---|---|---|---|
| Stress Relieving | Approx. 650 °C (annealed) Approx. 550 °C (hardened & tempered) |
1 hour per 50 mm wall thickness | Furnace |
| Soft Annealing | 800 °C | 1 hour per 25 mm wall thickness | Furnace |
| Hardening | 1040 °C | 30 seconds per mm wall thickness | Max. 52 HRC in oil, hot bath, protective atmosphere, vacuum, or air |
| Tempering | See tempering curve | 1 hour per 25 mm wall thickness | Air |
| Working Hardness | 30–48 HRC pre-heating of the tools = 250–350 °C |
| Tempering °C | HRC |
|---|---|
| 100 | 51 |
| 200 | 50.5 |
| 300 | 50 |
| 400 | 50 |
| 500 | 53 |
| 550 | 51 |
| 600 | 48 |
| 650 | 41 |
| 700 | 29 |
Applications
- Dies
- Tools for the production of screws & forging machines
- Highly stressed extruding tools for light metal processing - mandrels, pressing die cast moulds.
- Extruder tools including pipe extruders, such as extrusion stems, liners and die holders.
- Part stamping dies for non-ferrous heavy metals, forging die and press die inserts, forging tools for Hatebur presses.
- Die-casting moulds for non-ferrous heavy metal pressure die-casting.
- Hot Shearing Blades
Quality Assurance
Our H10, / DIN 1.12365 /, AISI H10 / steel undergoes rigorous testing and quality control to meet international standards, ensuring consistent performance and reliability. Certificates and test reports are available upon request. Feel free to reach out to us for more information on our H10 - 1.2365 steel products or to discuss your specific requirements. We're dedicated to providing top-quality steel solutions that meet your needs and exceed your expectations.
Manufacturing Range
| Products | Diameter (mm) |
|---|---|
| Hot Rolled bar | 8 - 65 |
| Forged and Turned bars | 65.2 - 500 |
| Forged Square Bars | 50 - 500 |
Flats
| THICKNESS | WIDTH |
|---|---|
| 6.00 mm - 410.00 mm | 20.00 mm - 700.00 mm |