Characteristics
80NMV-VI precision alloy is a non-magnetic material with a coefficient of thermal linear expansion (TKLR 11−11.4 [1/ºC] between minus seventy degrees and +550ºC) and is used to seal the junction with glass. Melting point of the alloy = 1450 °C. Refers to the group of highly alloyed precision alloys with unique physical and mechanical characteristics (elastic, magnetic, thermal, electrical), due to the verified chemical composition, the absence of impurities, precision manufacturing and processing. The main part of precision alloys is made on the basis of iron and nickel.
The chemical composition of the alloy 80NMV-VI in percentage.
| The standard is |
C |
S |
Mn |
Si |
Ni |
Fe |
Mo |
W |
|---|
| Standard:TU 14−1-3237−81 |
≤0.02 |
≤0.01 |
≤0.15 |
≤0.15 |
Residue |
≤0.3 |
9.5−11 |
10.5−11 |
Physical properties of the alloy 80NMV-VI.
| Temperature |
a, 10−6 1/°C |
|---|
| 20 |
8−13 |
Mechanical properties of 80NMV-VI alloy at 20 °C.
| Range |
Size |
σT |
σ in |
e.g. |
KCU |
y |
d5 |
Thermal treatment. |
|---|
| |
mm |
MPa |
MPa |
- |
kJ/m2 |
% |
% |
- |
| |
|
|
450−550 |
|
|
|
|
Annealing |
Physical properties of the alloy:
| Description |
Designation |
|---|
| — Alloy data acquisition temperature [degrees] |
— T |
| — Modulus of elasticity of the 1st kind, [MPa] |
— E |
| — Coefficient of thermal linear expansion (at 20°C), [1/Grad] |
-a |
| — Specific electrical resistance [Ohm-m] -R |
-R |
| — Specific gravity [g/cm3] -r |
-r |
| — Heat transfer coefficient [W/(m-grad)] -l |
-l |
| — Specific heat capacity (at 20°C), [J/(kg-grad) |
-C |
Mechanical properties:
| Description |
Designation |
|---|
| — Ultimate yield strength (yield strength for permanent deformation) [MPa] |
sT |
| — Tensile strength [MPa] |
sT |
| — Ratio constriction [ % ] |
y |
| — Tensile elongation [ % ] |
d5 |
| — Brinell hardness, in [MPa] |
HB |
| — Impact toughness [ kJ/m2 ] |
KCU |
Weldability:
| Designation |
Description |
|---|
| limited weldable |
— Must be preheated to 100−120°C with subsequent heat treatment |
| no restrictions |
— No need for preheating and final heat treatment |
| Difficult to weld |
— need preheating to 200−300 ° C with the final heat treatment |
Buy at best price
Evek GmbH stocks a wide range of precision materials. All products are certified. Alloy grade 80NMV-VI is a popular type of steel products, thanks to the low cost and the widest range of products. Quality is guaranteed by compliance with absolutely all technological production standards. We supply 80NMV-VI grade products of standard or non-standard parameters by individual order. Execution of orders takes minimum time. Preferential discounts are provided to wholesale customers.
