Strip, sheet HN35WT
Equivalent
| Grade | analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| XN35VT | EI612 | Buy from stock, view availability | |||
| XN35VTR | EI725 | Buy from stock, view availability |
Manufacture
Flat mill-products of HN35WT grade are made of high-alloyed low-carbon constructional steel. It should be carburized (case-hardened) in some cases with a purpose of increasing hardness and wearing quality. Titanium (1,1−1,5%), cuprum (<0.25%), phosphorus (<0.03%), mangan (<1-2%), wolframium (2,3-3,5%), molybdenum ( 0,3%), sulfur (0,02%) shoud be added to charge mixture in the capacity of masteralloys.
Percentage composition
| GOST | Cr | Ni | W | Mn | Ti | Si | Cu | Mo | P | Fe | S |
| 5632−72 | 14−16 | 34−38 | 2.3−3.5 | 1.0−2.0 | 1.1−1.5 | <0.6 | <0.25 | <0.3 | <0.03 | the rest | <0.02 |
At the beginning jumping-up temperature of semi-fabricates is 1170 °C; in the end a temperature is 850 °C. Finished mill-products are cooled in air.
Welding
This alloy relates to hardly weldable steels. It is necessary to do a previous heating to 200−300°С with an annealing (finishing heat treatment) to increase reliability of seams. Fastening of construction units is performed with a help of hand arc-welding method and electrodes KTI-762. Final annealing is recommended for releasing of stresses.
| Type | Description |
| limitedly weldable | welding is possible at heating to 100−120°С and last 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, to do a heat treating (annealing) after welding |
| weldable without stint |
welding is done without further heat treating or previous heating |
Application
It is used in details of high-temperature equipment that are exploited in mechanical engineering and petrochemical industry; in manufacture of disks, flat springs, screens that can work at temperature of <650 °C. If a temperature is higher than 850°C, there appears an active oxide scale formation.
Supplier
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