Characteristics
Precision alloy 47ND (47ND-VI) to non-magnetic alloys with a specified temperature coefficient of linear expansion (TKLR in the temperature range -70 +550ºC is not higher than 9-11 [1/ºC]), which is used for tight connection with glass. The melting temperature of the alloy is 1450 °C. Refers to the group of precision alloys, which have unique physical and mechanical characteristics (thermal, elastic, magnetic, electrical, etc.), combine a number of qualities due to the accuracy of the chemical composition, thoroughness of manufacturing and processing, the absence of impurities. This group includes high-alloyed materials. Most precision alloys are made on the basis of iron, copper, nickel, manganese and cobalt.
The chemical composition of alloy 47 ND, in percent.
| Si |
C |
Fe |
Mn |
P |
S |
Ni |
Cu |
|---|
| up to 0.3 |
up to 0.05 |
45.72 - 49.5 |
up to 0.4 |
up to 0.015 |
to 0.015 |
46 - 48 |
4.5 - 5.5 |
Physical properties of the alloy 47 ND.
| MPa |
Grad |
1/Grad |
J/(kg-grad) |
kg/m3 |
W/(m-grad) |
Ohm-m |
|---|
| E 10- 5 |
T |
a 10 6 |
C |
r |
l |
R 10 9 |
| 1.5 |
20 |
|
|
8200 |
|
500 |
Mechanical properties of alloy 47 ND at 20 °C.
| Product range |
Size |
sT |
sT in |
e.g. |
KCU |
y |
d5 |
Thermal treatment. |
|---|
|
mm |
MPa |
MPa |
- |
kJ/m2 |
% |
% |
- |
| Tape, according to GOST 14 080-78 |
|
|
490-610 |
|
|
|
23 |
|
Notations:
Physical properties of the alloy:
| Description |
Designation |
|---|
| - Alloy data acquisition temperature [Grad] |
- 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 |
Magnetic properties :
| Description |
Designation |
|---|
| - Coercive force (within) [ A/m] |
Hc |
| - Magnetic permeability (not more than) [ MHN/m] |
Umax |
| - Losses (not more than) at frequency 50 Hz and 1.0 Tl [ W/kg ] |
P1.0/50 |
| - Magnetic induction Tl (not less) at magnetic field strength 100, in magnetic fields [ A/m] |
B100 |
| - Coercive force (not less), [ A/m] |
Hc |
| - Magnetic permeability (not more than), [ MHN/m] |
Umax |
| - Losses (not more than) at frequency 50 Hz and 1.0 Tl [ W/kg ] |
P1.0/50 |
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 |
- Preheating to 200-300°C with final heat treatment necessary |
Delivery
All 47ND grade products are certified. Technical documentation includes data on chemical composition, limiting percentage of impurities, and mechanical properties of products. With us you can buy in bulk a variety of semi-finished products for large-scale production. We also offer good conditions for retail buyers. You will be satisfied with the level of service and responsiveness of service.
Buy at the best price
Evek GmbH offers an unlimited range of high quality precision alloys at competitive prices. If you can't choose, our experienced managers are always available and ready to advise you. Order with us and you will receive certified products that meet international quality standards in the shortest possible time. If you value your time, contact our nearest office today or place your order online.
