Pipe, wire made of HN80TBJU
Heat-resisting nickel alloy of an actual grade is meant to be used in manufacture of turbines. They have a long exploitation at a temperature of 700 °C.
Percentage composition according to GOST 5632−72
|≤0,08||≤0,8||≤1||≤0.015||≤3||72.293 — 81.7||≤0,012||15 — 18||2.4 — 2.8||0.5 — 1||1 — 1,5|
Alloying produces a multidimensional effect on a steels quality. Chrome increases hardness and resistant to corrosion. Nickel confers alloy plasticity; wolframium confers hardness, red-hardness. Vanadium increases strength, resistance to impact loads and wipe out; cobalt raises heat-resistance, magnetic permeability. Molybdenum confers red-hardness, strength, resistance to corrosion at a high temperature. When a quantity of mangan is more than 1%, it increases impact index and wearing qualities. Titanium increases stability, corrosive resistance; aluminium raises resistance to oxide scale formation; niobium increases resistance in acid environment. Cuprum raises plasticity, prevents an action of rust. Extra-qualitative steel contains borium, zirconium, selenium, nitrogen except for above-said components.
|limitedly weldable||welding is possible after welding details heating to 100−120°С with further heat treating|
|hardly weldable||in order to obtain a qualitative welded joints, it is necessary to perform the following operations: while welding to heat it up to 200−300°C, heat treating (annealing) after welding|
|weldable without stint||welding is done without further heat treating or previous heating|
Physical characteristics in a temperature range of 20−800°С
E 10— 5
a 10 6
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