Malzeme 1.2343
Hot work tool steel
Material 1.2343 - versatile tool steel for hot work
The material 1.2343 (X37CrMoV5-1) belongs to the group of tool steels and to the subgroup tool steel for hot work.
Typical applications for the material 1.2343 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 1.2343- what characterizes this steel
This tool steel for hot work is a chromium-molybdenum-vanadium alloy.
The chemical composition of material 1.2343 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 1.2343
1) Recommendation for case hardening of tool steel for hot work according to material number 1.2343
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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Normen
| DIN / EN | US-Standard | AFNOR | UNI | JIS | istek |
|---|---|---|---|---|---|
| X37CrMoV5-1 X38CrMoV5-1 | AISI H11 UNS T20811 | X37CrMoV51KU | SKD6 | istek |
Werkstoffgruppe: Hot work tool steel
Uygulamalar
- Die casting tools as well as ingot molds in light metal processing
- Dies 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
Isıl İşlem
Hot forming: approx. 900 - 1100 C° , slow cooling
Soft annealing : 760 - 780 C° max. 229 HB, max. 780 N/mm²
2-5 hours slow furnace cooling down to approx. 530 C°.
then air cooling.
Stress relief annealing : 650 - 680 C° in quenched and tempered condition below
the last tempering temperature, slow cooling.
Hardening : at approx. 1010 - 1030 C°.
Tempering : 540 - 630 C° (3 x 2 hours each)
Quenching : oil, air
Kimyasal Bileşim
| C % | Si % | Mn % | P % | S % | Cr % | Mo % | V % |
| 0,33 - 0,41 | 0,80 - 1,20 | 0,25 - 0,50 | max 0,030 | max 0,020 | 4,80 - 5,50 | 1,10 - 1,50 | 0,30 - 0,50 |
Mekanik Özellikler
| DIN EN ISO 4957 Werkzeugstähle. Legierte Werkzeugstähle für Wamarbeit. | ||
| geglüht | Härte (HBW) | <= 229 HBW |
| gehärtet | Härte (HRC) | ~ 54,2 HRC |
| angelassen bei ~ 50 ° C | Härte (HRC) | ~ 53,7 HRC |
| angelassen bei ~ 100 ° C | Härte (HRC) | ~ 53 HRC |
| angelassen bei ~ 150 ° C | Härte (HRC) | ~ 52,5 HRC |
| angelassen bei ~ 200 ° C | Härte (HRC) | ~ 52 HRC |
| angelassen bei ~ 250 ° C | Härte (HRC) | ~ 52 HRC |
| angelassen bei ~ 300 ° C | Härte (HRC) | ~ 52,5 HRC |
| angelassen bei ~ 350 ° C | Härte (HRC) | ~ 53,4 HRC |
| angelassen bei ~ 450 ° C | Härte (HRC) | ~ 54,5 HRC |
| angelassen bei ~ 500 ° C | Härte (HRC) | ~ 56 HRC |
| angelassen bei ~ 550 ° C | Härte (HRC) | ~ 52 HRC |
| angelassen bei ~ 600 ° C | Härte (HRC) | ~ 46 HRC |
| angelassen bei ~ 650 ° C | Härte (HRC) | ~ 39 HRC |
| gehärtet und angelassen | Härte (HBW) | <= 249 HBW |
| Härte (HRC) | >= 48 HRC | |
Malzeme talebi