
H 13 Steel Hot Forged Rings / Forged Metal Rings With Polished Surface
Application:
Suitable for high quality aluminum, magnesium and zinc alloy casting mould, polished plastic hard mould, as well as fiberglass type home electronics mould.
Suitable for medium and large size aluminum and magnesium casting mould. Better integrated performance and toughness, more stable and reliable for the sophisticate cavity casting mould.Forged, Black surface/Milled, annealed ≤ 229HB, Electro Slag Remelting, 100% Ultrasonic test on steel.
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.
SHANGHAI UNITE STEEL
We, Shanghai Unite Steel are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.
In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china, such as: DAYE Special Steel-a famous steel enterprise with the longest steelmaking history; BAO Steel, and Dongbei Special Steel Group-the biggest special steel manufacturer; TPCO, VALIN-largest seamless steel tube production enterprise; What's more, we have built long, deep and close business relationship with dozens of steel companies, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!