Tool steel for hot work 1.2343, 1.2344, X37CrMoV5-1, X40CrMoV5-1, AISI H11, AISI H13 in accordance with ISO 4957.
| Standard | Steel Grade | |||||||
|---|---|---|---|---|---|---|---|---|
| Chemical composition % | ||||||||
| C: | Mn: | Si: | P: | S: | Cr: | Mo: | V: | |
| ISO | 1.2343 - X37CrMoV5-1 | |||||||
| 0.33 - 0.41 | 0.25 - 0.50 | 0.8 - 1.2 | <0.03 | <0.02 | 4.8 - 5.5 | 1.1 - 1.5 | 0.3 - 0.5 | |
| PN | WCL | |||||||
| 0.32 - 0.42 | 0.20 - 0.50 | 0.8 - 1.2 | <0.03 | <0.03 | 4.5 - 5.5 | 1.2 - 1.5 | 0.3 - 0.5 | |
| ASTM | AISI H11 - UNS T20811 | |||||||
| 0.33 - 0.43 | 0.20 - 0.60 | 0.80 - 1.25 | <0.03 | <0.03 | 4.75 - 5.50 | 1.1 - 1.6 | 0.3 - 0.6 | |
| ISO | 1.2344 - X40CrMoV5-1 | |||||||
| 0.35 - 0.42 | 0.25 - 0.50 | 0.8 - 1.2 | <0.03 | <0.02 | 4.8 - 5.5 | 1.2 - 1.5 | 0.85 - 1.15 | |
| PN | WCLV | |||||||
| 0.35 - 0.45 | 0.20 - 0.50 | 0.8 - 1.2 | <0.03 | <0.03 | 4.5 - 5.5 | 1.2 - 1.5 | 0.8 - 1.1 | |
| ASTM | AISI H13 - UNS T20813 | |||||||
| 0.32 - 0.45 | 0.20 - 0.60 | 0.8 - 1.2 | <0.03 | <0.03 | 4.75 - 5.50 | 1.10 - 1.75 | 0.8 - 1.2 | |
1.2343, AISI H11, 1.2344, AISI H13 - specification and application
Alloy tool steel for hot working for moulds for die casting of aluminium alloys, magnet, zinc, pressing pipes, copper alloy bars and light metals under pressure.
It is characterized by very high hardenability, resistance to tempering, possibility of working at high temperatures and low susceptibility to forming a surface crack net.
Disadvantages of the grade are low sensitivity to rapid temperature fluctuations during operation, low impact and shock resistance. Before use the tools must be warmed to a minimum temperature of 200 C, but must not exceed the tempering temperature.
It is used for the production of hot working knives, die inserts for presses and forging machines, screws, dies, moulds for plastics, stamps, mandrels, punches, copper rolling mills.
The steel is also available after ESR electroslag melting, which guarantees high purity - recommended for moulds for casting non-ferrous metal alloys under pressure, and ESF which guarantees fine-grainability.
Mechanical properties of 1.2343 / X37CrMoV5-1, 1.2343 / X40CrMoV5-1
- Annealed/softened condition - hardness: <229 HB
- Hardness in tempered condition: min >48 HRC
- Hardness after hardening: 57.3 - 57.5 HRC
- Hardness after tempering in the following temperatures:
- 300 C = 54,4 - 54,5 HRC
- 350 C= 54,9 HRC
- 400 C = 55,4 - 55,6 HRC
- 450 C = 55,9 - 56,2 HRC
- 500 C= 56,3 HRC
- 550 C= 53,2 HRC
- 600 C = 47,5 - 47,7 HRC
- Linear expansion coefficient: 12,7 * 10-6 K-1
- Thermal conductivity: 38 W * m-1 K-1
Heat treatment of 1.2343, X37CrMoV5-1, 1.2344, X40CrMoV5-1
- Softening annealing at a temperature of 800 - 840 C
- Hardening at a temperature of 980 - 1050 C
- Tempering at a temperature of 450 - 550 C
- Relaxing annealing in the range of 470 - 550 C
- Nitriding at a temperature of 470 - 550 C
In the above mentioned grades the company delivers:
- Rolled, peeled and drawn bars and flat bars 1.2343, 1.2344, X37CrMoV5-1, X40CrMoV5-1
- Forged bars, flat bars and forged blocks, forgings, rings 1.2343, 1.2344, X37CrMoV5-1, X40CrMoV5-1
Other designations of the grade:
AISI H13, AISI H11, 1.2343, X 37 CrMoV 5-1, 1.2344, X 40 CrMoV 5-1, WCL, WCLV, UNS T20813, UNS T20811, X35CrMo05KU, BH11, BH13, X41CrMoV5-1, 1.7783, 4Cr5MoSiV, 4Х5МФ1С, 4Х5МФС, 4Ch5MF1S, 4Ch5MFS, Z38CDV5, SKD6, F-520.G