20KH3MVF

Supplier KMZ offers stainless steel pipe, wire, sheet, circle the brand 20Х3ВМФ (ЭИ415, EE 579).at economical price. The provider ensures timely delivery of products at any address specified by the consumer. The price is the best in this segment of the rental.

Technical characteristics

Steel 20Х3ВМФ (ЭИ415, EE 579) is a heat-resistant relaxation resistant steel pearlitic class, which is designed for the production of responsible products, chemical equipment and apparatus operating at temperatures of 500…550°C. Typical components made from this steel are the turbine rotors, disks and turbine blades, high pressure lines and valving elements and fasteners, experiencing working pressure up to 80…100 MPa. Steel lends itself well to chemical-heat treatment, nitriding, cyanidation, and is consequently insensitive to varying contact voltages.

Application

Responsible details of aviation mechanical engineering — shafts of motors, fans, etc. Intensive scale formation on the surface starts only at temperatures exceeding 600 °C.

Chemical composition

Chemical elements	GOST 20072−74	THAT 108−1029−81
Carbon (C)	0,15 0,23 …	0,17 0,24 …
Chromium (Cr)	2,80 3,30 …	2,40 3,30 …
Molybdenum (Mo)	0,35… 0,55	0,35… 0,55
Tungsten (W)	0,30 0,50 …	0,30 0,50 …
Vanadium (V)	0,60 0,85 …	0,60 0,85 …
Manganese (Mn)	0,25… 0,50	0,60 0,25 …
Silicon (Si)	0,17… 0,37	Not more than 0.40
Titanium (Ti)	≤0,030	-
Copper (Cu)	≤0,20	≤0,25
Nickel (Ni)	≤0,30	≤0,50
Phosphorus (P)	≤0,030	≤0,025
Sulfur (S)	≤0,025	≤0,022

Note. GOST 20072−74 involves smelting of the steel scrap scrapbook method: in the composition of the steel may contain not more than 0.30% of copper. The steel produced according to technical requirements TU 108−1029−81, produced by electroslag remelting, with more stringent tolerances for non-metallic impurities — sulfur and phosphorus.

Physical properties

• Density, kg/m³ — 7800;
• Coefficient of thermal expansion in the temperature range 100…600°C, µm/deg — 10,6 13,0…;
• Coefficient of thermal conductivity, W/mgrad — 35,6 29,3…;
• Specific heat, j/kgrad — 502…750.

Mechanical properties after quenching

• The limit of temporary resistance, MPa — 730…750;
• Yield stress, MPa 620 650…;
• Relative tensile elongation, % — 13 11…;
• The relative narrowing of the cross-sectional area, % — 35…40;
• Hardness on the Brinell hardness, HB, max — 269.

Treatment

Weldability limited (requires pre-heating of the billets). The temperature regime of forging — 780…1230°C. Machinability — good.

Buy

Supplier KMZ offers to buy stainless pipe, wire, sheet, circle the brand 20Х3ВМФ (ЭИ415, EE 579).at economical price. The provider ensures timely delivery of products at any address specified by the consumer.

Supply, price

Buy stainless pipe, wire, sheet, circle the brand 20Х3ВМФ (ЭИ415, EE 579). provider KMZ can at an affordable price. The price is formed based on the European standards of production. Buy stainless pipe, wire, sheet, circle any brand at a reasonable price, you can wholesale or retail. Regular customers can take advantage of the discount system of discounts from the company KMZ. The price is the best in this segment of the rental.