Rod, sheet, pipe, wire, strip made of HN70WMTJU
Equivalent
| Grade | analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| ХН70ВМТЮ | EI617 | Buy from stock, view availability |
Technical characteristics
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
| Dimension | Heat treatment | sв MPa |
sT MPa |
d5% |
y % | KCU kJ/m2 |
| Bar | Thermohardening | 1100 | 750 | 17 |
This alloy is hardly weldable because there are titanium and wolframium in its composition.
Percentage composition GOST 5632−72
| Fe | Ni | Cr | W | Mo | Ti | Al | Si |
| ≤5 | 62−76 | 13−16 | 5−7 | 2−4 | 1.8−2.3 | 1.7−2.3 | ≤0,7 |
| Mn | V | C | B | Ce | S | P | the residual elements |
| ≤0,5 | 0.1−0.5 | ≤0,12 | ≤0,02 | ≤0,02 | ≤0,02 | ≤0,02 | ≤0,02 |
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.
Welding
| Type | Description |
| 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 |
HN70WMTJU alloy supplier
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