XH78T smelted steel in electric furnaces of open type. Obsolete steel designation — EI435. Foreign counterparts: GH3030 (China), 2.4951NiCr20Ti (Germany). The main semi-finished goods are: the circle, wire, tube, strip, sheet. Fusion refers to a heat-resistant and heat-resistant, thanks to its high content of nickel. Its disadvantages instability should be ranked among the sulfur compounds, resulting in embrittlement. At t ° 1100 ° C the oxidation rate of 2 mm per 10 years. Use for lightly loaded parts operating at t ° to 1100 ° C in the manufacture of flue pipes, furnace tubes, thermocouple sheaths, combustion chambers. XH78T The wire is used for welding of steel structures. .
XH78T Alloy Chemical composition (in%)
The mechanical properties at 20 ° t ° C
1. Tensile strength of from 595 to 880 MPa, depending on the product is reduced by heating to 40 MPa at 1100 ° C.
2. Yield strength MPa ~300 also depends on the type of rolled. The lowest rate — at t ° to 800 ° C is 98 MPa, and then begins to grow. By 1100 ° C it rises to 105 MPa.
3. The elongation at break of up to 40%. When heated to 900 ° C maximum elongation — 90%.
4. Reduction of ~ 50%.
5. The hardening is carried out at t ° 980 — 1100 ° C in air or water.
Physical properties at 100 ° C
1. The modulus of elasticity of the 1st kind 2.19 MPa.
2. Coefficient of thermal expansion = 12.2 [1 / deg].
3. Heat capacity — within the limits of 14.6 W / (m · deg).
4. Density = 8.38 g / cm³.
5. The electrical resistance of 1,1 Omxmm2 / m
|t °||E 10 — 5||a June 10||Heat capacity||Density|
|hail||MPa||1 / Grad||W / (m · deg)||g / cm 3|
Production of superalloy rolled operating at t ° to 1100 ° C. It is widely used in the aviation and power engineering. Welding wire, electrodes, solid-rolled rings — for welding nickel-chromium alloys and metal structures made of carbon steel. Welding is carried out with pre-heated to 200−300 ° C to obtain a higher quality weld.
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In stock «Electrovek-steel» company offers a wide range of brand products XH78T standard and custom settings. Prices are due to the technological features of production without including additional costs. All products are certified. We easily purchase wholesale products needed for large-scale projects, we also offer favorable conditions for retail customers. The products are manufactured in strict compliance with the requirements of the technological process that guarantees the highest quality, it is kept under cover or indoors to protect from any damage. Terms of realization of orders are minimal. Wholesale customers receive discounts.