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Today, without nickel, it is impossible to imagine modern industry. Wire grade NP2 is made of high-purity nickel alloy with a nickel content of not less than 99.5%. Such raw materials, due to a minimum of impurities, have a large range of useful properties: high plasticity, corrosion resistance to most concentrated acids, alkalis and aggressive industrial environments, as well as high electrical resistance. Nickel forms, when in contact with air, a dense surface protective film that protects the material from oxidative damage. And the minimum content of impurities contributes to the increase of mechanical and physical parameters and increases the heat resistance of the NP2 wire.
The percentage composition of NP2, GOST 492−2006
| Ni | C, Fe | Mg | Cu | Si | Mn | Bi | Zn | S | Si | As, Cd, P, Pb, Sn |
|---|---|---|---|---|---|---|---|---|---|---|
| 99.5 | To 0.1 | ≤0,1 | ≤0,1 | ≤0.15 | ≤0,05 | ≤0,002 | ≤0.007 | ≤0.005 | ≤0,015 | To 0,002 |
Most often, NP2 grade wire is used by the chemical industry, electrical engineering and electrochemistry. The production of caustic chemicals, mineral fertilizers, the production of heat resisting resistance elements, nickel plating of parts to give them antifriction properties, corrosion resistance, and also aesthetically attractive appearance — is not without this universal raw material.
Main settings
| Name of semi-finished product | Normative documents | Designation of the characteristic | |||
Σ in N / mm 2 |
Σ t N / mm 2 |
Δ (%) |
Ψ (%) | ||
| Hot-pressed wire | TU 14−3-1591−88 | 196 | 42 | 85.6 | |
| Cold-deformed wire | TU 14−3-1591−88 | 196 | 40 | ||
| Recommended heat treatment | Heating in the temperature range 620−700 ° C with an exposure of at least three minutes per millimeter of product thickness, but not less than half an hour. Cooling in the open air. | ||||
Dependence of mechanical properties on operating temperature
T exec. (ºC) |
Σ in N / mm 2 |
Σ 0.2 N / mm 2 |
Δ (%) |
| Hot-pressed wire Ø 6 mm or cold-rolled Ø 1.8 mm of grade НП2 (annealing at t ° 650 ° C) | |||
| 100 | 416 | ||
| 300 | 366 | 251 | 44 |
| 500 | 263 | 237 | 33 |
| Hot-pressed wire Ø 6 mm or cold rolled Ø 1.8 mm grade NP2 without annealing | |||
| 20 | 323−382 | ||
| 100 | 357 | ||
| 200 | 350 | ||
| 300 | 337−382 | ||
Buy at the best price
A huge selection of nickel alloy wires on the site of LLC «_", including wires of the brand NP2, allows you to take into account the wishes of any customer. Convenient delivery and constant attention to the customer will make the purchase as comfortable as possible, and the compliance of all semi-finished products with high quality standards will guarantee a reliable Work of similar products on any sections of the industrial complex.The various parameter of the wire of grade NP2, presented in our warehouse, will make it easy to form an order. Discount.