Alloy Nmcak2-2-1 (Alumel)

Designation

Name The value
Designation GOST Cyrillic НМцАК2-2-1
Designation GOST Latin HMtsAK2-2-1
Transliteration NMtsAK2-2-1
By chemical elements NiMnAlCo2-2-1
Name The value
Designation GOST Cyrillic Алюмель
Designation GOST Latin Aljumel
Transliteration Alyumel
By chemical elements -

Description

Alloy Nmcak2−2-1 applies: for the production of semi-finished products (rods and wire), intended for the manufacture of thermocouples.

Standards

Name Code Standards
Non-ferrous metals, including rare, and their alloys В51 GOST 28873-90, GOST 492-2006
Wire from nonferrous metals and their alloys В74 TU 48-21-172-72, TU 48-21-686-80, TU 48-21-877-89
Bars В55 TU 48-21-63-72

Chemical composition

Standard C S P Mn Si Ni Fe Cu As Al Sb Pb Bi Co Mg Ni+Co
GOST 492-2006 ≤0.1 ≤0.01 ≤0.005 1.8-2.7 0.85-1.5 91.477-95.15 ≤0.3 ≤0.25 ≤0.002 1.6-2.4 ≤0.002 ≤0.002 ≤0.002 0.6-1.2 ≤0.05 Rest
Ni is the basis.
According to GOST 492-2006, the total mass fraction of impurities is ≤ 0.70%.

Mechanical properties

Section, mm σU, MPa d5, % HB, MPa
Bars in the state of delivery
500-600 - ≥130
1000-1100 ≥3.5 250-300

Description mechanical marks

Name Description
σU Limit short-term strength
d5 Elongation after rupture
HB Brinell hardness number

Physical characteristics

Temperature Е, HPa r, kg/m3 R, Mr. · m
20 182 8500 320

A description of the physical symbols

Name Description
Е The normal elasticity modulus
l Coefficient of thermal conductivity
R UD. the resistivity