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Ni42 wire, rod, bar. Invar 42

Ni42 wire, rod, bar Sheet, strip


Grade analogue W. Nr. Aisi Uns En Order
42N EP318 1.3917 K94200 Ni42 Buy from stock, view availability

Ni42 wire, rod, bar supplier

«Auremo» company proposes to buy Ni42 wire, rod, bar for the most favorable price. There is a wide range of goods of a high quality in stock. You can easily buy products. A Ni42 wire, rod, bar price depends on order quantity and additional conditions of supply. If you buy products by wholesale, you will be given special discounts. An availability of products and efficiency of delivery are conditioned by a fact that we have offices in Moscow, St. Petersburg and cities of Central Europe. Buy Ni42 wire, rod, bar for a privileged price.

Technical characteristics

A name of this alloy originates from a word «invariant» which means «unchanged» and corresponds a truth because TCLE of Invar almost does not change in a temperature range -70º — +340ºC. This alloy relates to a group of precision alloys with a minimal TCLE in a range of temperatures -70º +340ºC, not higher than 4.5 — 5.5x10-6/C°) and is used in electrovacuum equipment. A precision alloy Invar 42 possesses unique physical, mechanical characteristics (magnetic, elastic, heating, electrical). It differs with a high accuracy of chemical composition, carefulness of manufacture and processing, an absence of residual elements. This category relates to a group of high-alloyed alloys. Such alloys are smelted on a basis of iron, nickel, copper, mangan, cobalt.

Percentage composition:

Ni Cu P Mn Si C Fe S
41.5 — 43 ≤0.1 ≤0.015 ≤ 0.4 ≤ 0.3 ≤0.03 56.14 — 58.5 ≤0.015

A usage of alloyed steels depends on work condition. Invar is a high-alloyed steel that is used in elastic details and is exploited at temperature to 300 °C. In comparison with analogous materials, this alloy possesses a high continuous operating period in specific conditions. It demonstrates an excellent resistance to a grain boundary attack and to corrosion cracking.

Physical characteristics

V/(m/degree) Temperature MPa 1/Degree Ohm-m J/(kg/degree)


  20° 1,42   580   8200

Mechanical features of alloy at a temperature 20 °C.

Product mix KCU Size d5 y sv sT Heat treating F.e.
Wire, bar
GOST 14 080−78


Type Description
limitedly weldblea 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: before welding to heat details up to 200−300°C, heat treating (annealing) after welding
weldable without stint welding is done without further heat treating or previous heating

Mechanical characteristics

Description Identification
Short resistance to rupture [MPa] sv
Flow limit (proportional limit load) for permanent change of form [MPa] sT
Percent elongation at fracture [ % ] d5
Contraction ratio [ % ] y
Impact hardness [ kJ/m2] KCU
Brinell hardness [MPa] HB

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All products are certificated. A quality is guaranteed by rigorous technology compliance of manufacture. Our managers are always ready to answer any questions and to give a knowledgeable assistance. A large assortment will not leave you without a choice. You can easily buy goods in Ni42 wire, rod, bar supplier. Just connect us with a convenient way to you. Phone numbers, e-mail addresses of the closest company’s offices are located in section «Contacts». Order a service «Call-back» and our manager will help you to choose the products that will fit your individual requirements. You can easily buy Invar 42. A Ni42 wire, rod, bar. Price depends on order quantity and additional conditions of supply.