Tu 14-1-3225-81. Wire and rolled products of alloy X20N80. Technical conditions.
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Technical requirements Tu 14−1-3225−81
Wire made of alloy grade X20N80 is manufactured with an oxidized surface of dark color, coated with oxides after annealing, or with a light surface. In the absence of instructions in the order, the color of the wire surface is set by the manufacturer.
| Dimensions: | From 3.20 mm to 7.5 mm inclusive. Diameters, limiting deviations and weight of a piece of wire must comply with GOST 12766.1−90, for grades — GOST 12766 .4−90. |
| Electrical resistance: |
Specific electrical resistance of the wire: 1,06−1,17 Ohm * mm2 / m. The difference between the maximum and minimum values of electrical resistance within one skein should not exceed 4% for wire and 6% for long products. The electrical resistance of 1 m long bars must meet the requirements of GOST 12766 .4−90 for the alloy Kh20N80-N. It is allowed to produce rolled steel with an electrical resistance of 1 m to 10% less than the established rate. |
| Mechanical properties: condition supplies: |
Products are delivered in a soft heat-treated condition. The relative elongation for a wire with a diameter of 6 mm or more and long products should be not less than 20%. |
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