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Help CenterHot Work H13 DIN1.2344 Skd61 Mould Steel Round Bar
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Specifications
H13 DIN1.2344 skd61 mould steel round bar :1.anneal to HB 185;
2.size:dia:50-350,length:2500-4000
Skype:jennifer908765
Round size:
diameter:20-350mm length:2500-4000mm or customer requested.
Factory state: soft annealing to HB 185. skd61 mould steel flat
Comparable Standards:
| AISI/SAE | DIN | W.Nr. | AFNOR | JIS | BS | SIAU | GB,YB |
H13 |
X40CrMoV51 | 1.2344 | - | SKD61 | BH13 | MTV | - |
Chemical Analysis (%):
| C | Mn | Si | Cr | V | Mo | P | S |
| 0.37-0.42 | 0.30-0.50 | 0.90-1.20 | 4.80-5.50 | 0.90-1.10 | 1.20-1.50 | ≤0.03 | ≤0.03 |
Heat treatment
Isothermal annealing:
- Heat to 880°C, hold at temperature for 1/2 h to 1 h;
- Furnace cooling to 780°Cand hold at temperature for at least 5 hours;
- Cool by 10°C/h to 750°C;
- Cooling in air.
Maximum hardness: 230 HB
Stress relieving:
To be carried out after maching and before the final heat treatment.
- Heat to 650÷700°C, hold for 4÷6 hours;
- Furnace cooling to 300÷350°C;
- Cooling in air.
Hardening:
- Initial preheating to 350÷450°C;
- Second preheating to 750÷850°C;
- Heat to hardening temperature in the range 1000÷1050°Cand hold at temperature;
- Cooling in air.
Quenched hardness: 52÷56 HRC
Tempering:
In the range 550÷630°Cfor at least 3 hours according to hardness requirements and conditions of use.
Tempering must be repeated a second time at a temperature to or 20°Clower than the previous.
Before tempering, preheat the parts to 200÷300°C.
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