Stainless steel circle XH78T increased heat resistance has a complex composition of the nine key elements. Ductility and toughness of the composition of 78% nickel is required — this greatly simplifies the rental and weldability of metal. Mark XH78T may be referred to as EI435. Foreign counterparts: 2.4951NiCr20Ti (Germany), GH3030 (China). Nickel base gives high ductility. This greatly facilitates the cold rolling. The main alloying elements forms a surface oxide film, which protects the wire from corrosion and easily restored in case of damage. At t ° 1100 ° C the surface oxidation rate of 2 mm per 10 years. Chromium increases the chemical resistance, heat resistance, and titanium wire imparts structural strength and homogeneity.
Such expensive elements such as Cr, Ni, Ti cost increase range. But the high strength and durability XH78T alloy, the possibility of recycling material — translates expensive circle virtually long term investment. The disadvantage is the instability in sulphurous environment vyzyayuschey embrittlement.
Properties at 20 ° C
Tensile strength of 880 MPa is reduced at 1100 ° C and 40 MPa. Yield does not exceed 300 MPa, the lowest — 98 MPa at t ° 800 ° C, after which the rate begins to increase. By 1100 ° C it increases to 105 MPa. Elongation at break — 40%. At 900 ° C the maximum level recorded 90% elongation. Specific gravity 8.38 g / cm³; modulus 1st kind 2.19 MPa; linear expansion coefficient of 12.2 [1 / deg]; The heat capacity of up to 14.6 W / (m · deg).
|t °||E 10 — 5||a June 10||Heat capacity||Density|
|hail||MPa||1 / Grad||W / (m · deg)||g / cm 3|
Heat resistance and a significant resistivity of 1.1 Omxmm2 / m, can be used for a range of heating elements, designed for long-term work at t ° to 1100 ° C. Very often it is used in the manufacture of welded structures operating in aggressive environments in the chemical, pulp and paper, oil gas industry. Without it difficult to do in the production of paints and varnishes, fertilizers. XH78T electrodes used for welding nickel-chromium alloys and metal structures made of carbon steel. Advantages circle XH78T allow its use in the production of welded structures operating at temperatures up to 1100 ° C It is indispensable in the manufacture of jet turbine combustion chambers, operates reliably under the influence of huge loads. From the circle made plugs, bolts, various threaded connections, studs, nuts, high corrosion resistance and high wear resistance. It extends the scope of the range and that it is perfectly welded.
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In stock «Electrovek-steel» company offers a wide range of brand products XH78T standard and custom settings. All presented products are certified. The technical documentation includes data on the chemical composition, limiting the percentage of impurities; mechanical properties of products. We can buy in bulk, any semi-finished products for large-scale productions. We also offer optimal conditions for retail customers. High level of service and efficiency of service are the face of our company.
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Ppredostavlyaem to implement an unlimited range of chromium-nickel alloys of the highest quality at a competitive price. If you are not sure, offers experienced managers who are always connected and ready to provide advice. Having made an order with us, you will receive certified products that comply with Russian and international standards of quality in the shortest possible time. If you value your time, contact today with our nearest office in Russia or in Ukraine, or order it over the Internet.