Relevance

08KH17N13M2T brand belongs to the group of high-alloy austenitic steels. Used in the manufacture of welded chemical equipment for the manufacture of urea synthesis of urea, phosphoric acid. Has a high resistance against intergranular corrosion of the base metal and welded joints operated in hostile environments at temperatures up to 80 °C.

Production

Is carried out according to the following GOST: 18907−73; 5632−72; 18143−72; 5949−75; 7350−77; 4405−75; 9941−81; 9940−81.

The chemical composition of the alloy 08KH17N13M2T

08KH17N13M2T steel is smelted in electric arc furnaces. Production fully complies with the strict requirements of GOST. Made the following types of rentals: circle, tube, wire, sheet, ribbon. During the hot forging and rolling in the initial stage of the process the temperature reaches 1170 °C, and at the end of the process — of about 900 °C.

Physical properties at 20°C

— Conductivity 0,147· 102 W/(m · K).

— Specific gravity 7.9 g/cm³

— The modulus of elasticity of 20.3 · 10^{— 4} N/mm²

Hardness HB 200 MPa -1

— Specific electrical resistivity of 0.75 Omhm²/m.

— Specific heat 0,504 · 10³ j/(kg · K);

— Magnetic permeability in a field of 500 e равна1,255 micro Tesla/m.

Welding

Provided by an automatic; gas-arc manual welding. 08KH17N13M2T sheet thickness not exceeding 10 mm welded by all methods of manual arc welding satisfactorily. TIG method is recommended for sheets less than 6 mm in thickness and for welding root passes of more than 10 mm. larger items satisfactorily connect the two types of manual arc welding at low levels of niobium metal in the root pass of the weld. In order to prevent hot cracks in welds over 10 mm of the root joints to be welded back — step method using the welding components without niobium. For sheet thickness of over 12 mm using a combined method (argon arc welding and welding with stick electrodes). Seams are addressed to a corrosive environment, are welded to the electrodes OzL-20. For automatic arc welding or submerged arc welding recommended additive with wire rod St-01Х19Н18Г10АМ4; for manual arc welding electrodes OzL-20, anv-18, anv-20 and anv-17.

Use

Production of metallurgical, mining equipment, welded chemical equipment for urea synthesis urea, phosphoric acid, mineral fertilizers. Used in the manufacture of containers for wet-process phosphoric, 55% of acetic acid and other corrosive environments at t° to 80 °C. Used for the manufacture of welding electrodes and wire needed for connections of fittings, joints in pipelines, repair welds equipment that operates in a radioactive environment.

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