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Wire 40KHNM - ei995

Wire 40KHNM - ei995

To buy at an affordable price from the manufacturer a wire of various diameters, which is made of precision alloy grade 40KHNM (EI 995), offers the company AvekGlob. The supplier ensures timely delivery of products to any point specified by the consumer.

Composition and application

The 40KhNM grade alloy (EI 995) belongs to the group of precision alloys based on cobalt, chromium, nickel and molybdenum, which differ in the specified parameters of their elastic characteristics. From the alloy, the springs of watch mechanisms, spiral cylindrical springs, operating temperature of which does not exceed 400 ° C are produced. The alloy is also used for making cores of electrical measuring instruments and surgical instruments.

Important fields of application of this alloy are telecommunications, aeronautical and aerospace engineering, cryogenic engineering (in particular, liquefied natural gas tanks), which require either high dimensional stability with varying temperatures or expansion characteristics corresponding to the characteristics of other materials such as glass, ceramics or composites. For example, glasses used in electronics are selected for specific physical,

chemical or optical properties, and the choice of the associated metal seal depends on the glass and the type of seal (matched or compressing).

The chemical composition of the alloy 40KhNM (EI 995), regulated by the technical requirements of GOST 10994−74, is presented in the table (numerical data — in percent, iron — the rest):

C Si Mn Ni S P Cr Mo Co
0.07… 0.12 Not more than 0.5 1.8… 2.2 15… 17 Not more than 0.02 Not more than0.02 19… 21 6.4… 7.4 39… 41

Company Avecglob proposes to buy at a cost-effective prices from the manufacturer a wire made of the alloy grade 40KHNM (EI 995). The supplier is guaranteed the operational shipment of the products at any address specified by the customer.


Basic physical characteristics of the alloy:

Density, kg / m 3 — 8000;

Melting point, 0 С — 1390;

Coefficient of thermal conductivity, W / megade — 60… 75;

Specific heat capacity, kJ / kggrad — 456;

Coefficient of thermal expansion, μm / deg — 12… 15;

Modulus of elasticity, GPa — 200… 220.

Basic mechanical characteristics of the alloy:

The limit of the temporary resistance, MPa — 1000… 2100 (lower values — for the non-worked metal);

Yield strength, MPa — 1080… 1500 (lower values for non-worked-up metal);

Relative elongation at tension,% — 2… 10 (lower values — for cold worked metal);

Hardness according to Brinell, HB, not more — 241.

AvekGlob company sells wire made from 40KhNM grade alloy (EI 995) at affordable prices from manufacturers. The Supplier carries out guaranteed delivery of the rolled stock to any point agreed by the customer.