Rod, sheet, pipe, wire, strip made of HN70WMTJU
HN70WMTJU (EP598) is special steel that is used in manufacturing heat-resistant mill-products: gas turbine blades, heat-treating furnace details, chemical tools.
Hardness: HB 10 -1 = 310 MPа
|y %||KCU kJ/m2|
This alloy is hardly weldable because there are titanium and wolframium in its composition.
Percentage composition GOST 5632−72
|Mn||V||C||B||Ce||S||P||the residual elements|
Chrome increases hardness and resistant to corrosion. Nickel and chrome gives alloy corrosive resistance; wolframium gives 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. Extra-qualitative steel contains borium, zirconium, selenium 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|
|welding is done without further heat treating or previous heating|
HN70WMTJU alloy supplier
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