The tool steel 1. is a high alloyed steel which is often used in the plastic mould production due to its excellent heat and wear resistance. As a hot work steel the 1. has good therma conductivity and is thermal shock resistant. This steel grade can be used for many applications like extrution press tools, cutting tools or die casts.
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The tool steel 1. is a hot work steel that is resistant to thermal shocks, has a good toughness, good wear resistance, good thermal conductivity and can be cooled in water.
Material 1. - versatile tool steel for hot work
The material 1. (X37CrMoV5-1) belongs to the group of tool steels and to the subgroup tool steel for hot work.
Typical applications for the material 1. are:
- Die casting tools as well as ingot molds in light metal processing.
- Tools in extrusion plants
- Dies and die inserts in forging shops
- Mandrel bars for the production of seamless tubes
- Plastic molds, mold inserts
- Extruder screws, extruder barrels
- Ejector pins
- Die holders, chucks
- reinforcement rings
Material 1.- what characterizes this steel
This tool steel for hot work is a chromium-molybdenum-vanadium alloy.
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The chemical composition of material 1. is:
C: 0,37 %
Si: 1.00 %
Mn: 0,40 %
Cr: 5.30 %
Mo: 1.30 %
V: 0,40 %
The alloy exhibits first-class toughness, good thermal shock resistance, high high-temperature strength and good hot wear resistance.
An essential factor in the manufacturing process of heavily loaded tools is proper heat treatment. Tempering twice allows the microstructural transformation to complete. For maximum toughness, three times of tempering is recommended.
This procedure reduces the risk of premature tool wear.
Machining of material 1.
1) Recommendation for case hardening of tool steel for hot work according to material number 1.
The following guide values for hardness in the as-built condition apply to various fields of application:
- Casting tools for die casting 44-52 HRC, low pressure die casting and gravity die casting 300-360 HB.
- Dies for extrusion of light metal 34-50 HRC and steel 34-48 HRC
- Die forging tools 41-54 HRC
- Molds for glass processing 180-230 HB
- Mandrel bars for pipe manufacturing 266-375 HB
- Tools for plastics processing 40-54 HRC
- Tool holders 48-54 HRC
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