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Sheet NiMn3Al

Alumel sheet, strip

Technical characteristics

Alumel is an alloy that consists of nickel and aluminium with an adding of silicon, cobalt, and manganese.

1. Melting point is 1440 °C;

2. Specific electrical resistance is 0,32 Ohm-mm2/m;

3. Density of a material is 8480 kg/m3;

4. Coefficient of a thermal expansion is 16…18•10−6 °C-1.

By means of a good spring power, a wire, a strip or a rod can be made of this alloy. They are used for manufacture of thermocouples and compensating lead wires. The main demerit of alumel is its price, which is high because of a presence of nickel in a composition. Zirconium or zirconium + brome can be added in alloy for a refining of physical characteristics. It allows using this alloy at high temperatures in an aggressive environment. Thanks to the performance values, an alloy is widely used in modern pyrometry. Unique properties of a material are conditioned by its balanced composition. With an appearance of the similar materials, there has become a possibility to refine a lot of production methods, where a manufacturing is coupled with a force of high-temperature and aggressive environment. By virtue of these materials, it has become possible to provide a long-term, reliable working of a whole structure in a wide temperature range.


Alloy is widely used in a pyrometry in a form of wire or strip for producing thermocouples (diameter of a wire is 0,2 — 3,2 mm), heating controllers, compensating lead wires. A thermocouple consists of electric conductor fumes, that are soldered in one end and placed in the oriented for thermometry environment («hot junction»). Exposed ends are going to be placed into a thermostat (so-called «cold junction»). Thanks to alloyage, a thermocouple of this kind can stand a short-term effect of temperature up to 1300 °C working in an aggressive environment. Alumel compensating lead wires that are connected to transducers, reduce an error in indication. By virtue of small sizes and high readability, alumel-chromel transducers are used in automobile construction, aerospace engineering, in physical and chemical laboratories.

Percentage composition:

Fe Co Mn Impurities C Mn Al Ni+Co Si
≤0.3 0.6 — 1.2 1.8 — 2.7 0.7 ≤0.1 1.8 — 2.7 1.6 — 2.4 91.5 — 95.15

0.85 — 1.5

Physical characteristics of NiAlMnSi 2−2-1 at a temperature 20 °C

Property Magnitude
Hardness, hard alloy HB 10 -1 equals 250 — 300 MPа
Melting point around 1440°C
Hardness, soft alloy HB 10 -1 equals 130 MPa
Annealing temperature 950°C
Hot working temperature

1050 — 1280°C


«Auremo» supplier offers to buy NiMn3Al by wholesale. There is a wide range of half-finished goods in stock. An affordable alumel sheet, strip price from alumel sheet, strip supplier. Buy alumel NiMn3Al right now. Price is privileged for wholesale customers. Delivery of a alloy grade NiMn3Al conducts in following way:

A rod (Ø 12,0 — 100,0 mm);
A wire (Ø 0,10 — 12,00 mm);
A strip (0,1−5,0 mm of thickness; 3−600 mm of wideness).

Buy at a bargain price

«Auremo» alumel sheet, strip supplier implements rolled-metal products throughout the European market by wholesale. The terms of delivery take a minimum of time. You can buy alumel sheet, strip at a bargain price in our company. We are working with experienced managers; they are experts of modern marketing and can help to buy alumel sheet, strip. Introduced goods in stock are certified. «Auremo» company is a profitable supplier of alumel strip, sheet. A quality complies with GOST (all-Union State Standards) and International Standards. Alumel sheet, strip price depends on order quantity, additional conditions of supply. Price is privileged for wholesale customers. «Auremo» company offers to make purchases by wholesale. The best price for strip, sheet NiMn3Al from a supplier. Buy NiMn3Al right now.