Features | Specifications | Technical Information | Machining | Recommended Reading
Toolox 44
Toolox 44 is a new quenched and tempered steel designed to have high impact resistance and low residual stresses, and therefore good dimensional stability. Despite a hardness of 44 HRC, the new steel is easily machined. Toolox 44 Steel is particularly suitable for manufacturing plastic molds because it can be polished and etched with very good results.
Fields of application for Toolox 44 Steel include:
- Machine components
- Wear components
- Plastic molds
- Rubber molds
- Press forming
- Die cast dies
- Forging dies
- Coreboxes
- Permanent molds
Features
Despite hardness of nominal 45 HRC, Toolox steel is easy to machine.
Particularly suitable for manufacturing plastic molds because it can be polished and etched with very good results.
Great for guide rails, bending tools, etc. when high stability materials are required.
Specifications
| Hardness | Hardness range 41 – 47 HRC |
| Impact toughness | Test temperature ºF 68
Impact energy, Charpy-V-test for plate, direction Guaranteed minimum Ft. lbs. 14 |
| Milling | At cutting speed of 140m/mm, feed 0.15mm and 10min effective machining time using Sandvik Coromil 200 and inserts GC 1025
We guarantee maximum edge wear of 0.3mm |
| Etching | Toolox 44 fulfills the etching requirements of NADCA 207-2003 |
| Dimensions | Toolox 44 is supplied as plate in thickness between .200″ – 5 1/8″ |
| Heat treatment | Toolox 44 is not intended for further heat treatments. If Toolox 44 is heated above 590º C, no guarantees for the properties of the steel can be given. |
| Nitriding/coating | Below temperature <590ºC / 1094ºF |
Technical Information (Typical Values)
Chemical Composition (typical values)
| C | Si | Mn | S, max | Cr | Ni | Mo | V |
| 0.31% | 0.60% | 0.90% | 40 ppm | 1.35% | 0.70 | 0.80% | 0.145% |
Compressive Strength (typical values)
| Yield Strength | PSI |
| at +20°C | 181,300 |
| at +200°C | 166,340 |
| at +300°C | 162,400 |
| at +400°C | 150,840 |
Inclusions (typical values)
| Inclusion Size (equiv. diam) | 6μm |
| Area faction | 0.015% |
| Aspect ratio | 1.2 |
Mechanical Properties (typical values)
| +20°C | +200°C | |
| Tensile Strength, PSI | 210,300 | 200,150 |
| Yield Strength, PSI | 188,500 | 174,045 |
| Elongation, A5 [%] | 13 | 10 |
| Impact Toughness, Typical | 22 ft. lbs. | 22 ft. lbs |
| Hardness [HRC] | 45 | 45 |
Physical Properties (typical values)
| Thermal Expansion Coefficient | Inch/Inch F | +200°C |
| 68°F -> 750°F | 7.5 | 20 |
Gas Nitriding of Toolox 44, 60h, 510°C
Machining
Toolox 44 Steel can be machined on conventional machines. It is important that sharp tools are used with a positive cutting angle and that vibration is avoided. Use the following recommendations as guidelines and the starting point for your own evaluation of best practice.
Recommended preheat temperature when gas cutting and welding Minimum 250º C
Recommended stress relief annealing (after slow cooling to room temperature) after gas cutting and welding 580º C
Further Reading on Toolox 44 Steel and Its Applications
Presentations on:
Toolox 44 Application:
Toolox 44 Tool Testing:
Articles on:
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