The characteristics of alloy 56DGHH.
The alloy of the precision group 56 DGNH belongs to the class of alloys with a temperature-specified linear expansion coefficient. This group of alloys contains mainly highly alloyed alloys. Precision alloys in its main part are made on the basis of nickel, iron, copper, niobium, cobalt. The alloy has a melting point of about 1450 ° C.
Chemical composition 56DGNH, in percents.
| C |
Ni |
Mn |
Fe |
S |
Cu and Cr |
Si |
P |
|---|
| Up to 0.05 |
51.5 — 52.5 |
Up to 0.4 |
46.42 — 48.5 |
Up to 0.015 |
Up to 0.2 |
Up to 0.2 |
Up to 0.015 |
| Physical characteristics 56DGNH. |
|---|
| MPa |
J / (kg · deg) |
1 / Grad |
Grad |
Kg / m3 |
Ohm · m |
W / (m · deg) |
|---|
| E 10−5 |
C |
A 10 6 |
T |
R |
R 10 9 |
L |
| 1.6 |
|
|
20 |
8200 |
420 |
|
| The physical characteristics of this grade of alloy: |
|---|
| — the first kind of modulus of elasticity, [MPa] |
— E |
| — Heat capacity of the material (or coefficient of heat conductivity), in [W / (m · deg)] |
-l |
| — The temperature required to obtain these properties, [Grad] |
— T |
| — linear coefficient. Temper. Expansion in [1 / Grad] (temp. Interval 20 ° C), |
-a |
| — electrical resistivity, in [Ohm · m] |
-R |
| — The density of this material, [kg / m3] |
-r |
| — Specific heat of specific material in [J / (kg · deg)] (temp. Interval 20 ° C) |
-C |
Magnetic characteristics:
| — force coercive (not higher), in [A / m] |
Hc |
|---|
| — permeability is magnetic (not higher), in [MH / m] |
Umax |
| — loss of specific (not higher) frequency 50 Hz, magnetic induction 1.0 T, in [W / kg] |
P1.0 / 50 |
| — Magnetic Tl induction, the magnetic field strength is not less than 100, in a magnetic field, in [A / m] |
B100 |
Mechanical characteristics 56DGNH at temperatures of 20 ° C.
| Assortment |
ST |
The size |
KCU |
Sv |
Y |
For example. |
Heat treatment. |
D5 |
|---|
| |
MPa |
Mm |
KJ / m2 |
MPa |
% |
- |
- |
% |
| |
|
|
|
450−550 |
|
|
Annealing |
|
| Mechanical characteristics: |
|---|
| — Strength of short-term, in [MPa] |
Sv |
| — Yield limit (proportionality limit) for deformation of residual, in [MPa] |
ST |
| — at break, the relative elongation, in [%] |
D5 |
| — the restriction is relative, in [%] |
Y |
| — Impact viscosity, in [kJ / m2] |
KCU |
| — Brinell hardness, in [MPa] |
HB |
| Welding: |
|---|
| Bounded welding |
— welding is possible during heating up to the tempo. 100−120 oC and thermal further processing |
| Compostable |
— In order to obtain welded quality joints, it is necessary to perform additional operations: during welding, heating to temper. 200−300 ° C, heat treatment (annealing) after welding. |
| Welded without restrictions |
— welding is carried out without thermal further processing and preheating. |
Application
Precision alloys are used in the field of precision machine-building, for the production of various electronic precision instruments, household appliances, in innovative technologies, laser technology, in products of metrological and measuring equipment. The alloy is used for vacuum-tight junctions of parts of radio electronic equipment with glass. Of them, very high precision parts of devices that require a constant size in the range of climatic temperatures; Bar-shaped measures of length, products with a polished surface, details of complex shapes; Vacuum-tight junctions with sapphire, with glass. Precision alloys are called metal alloy, which possesses physico-mechanical unique characteristics (magnetic, elastic, thermal, electrical, etc.), or an alloy combining a number of characteristics, which are due to the accuracy of its chemical properties. Composition, careful manufacturing, processing, as well as the absence of various impurities.
Buy at a bargain price
The assortment of manufactured products from alloy 56DGNH, presented in LLC «Avek Global» can satisfy almost any consumer. This alloy belongs to a popular group of metal products, due to its real cost and variety of produced options. The quality of metal products is guaranteed by the absolute observance of all production technological standards. In the absence of the required type of product in the basic version, as well as in case of need of another product variant, we can produce their non-standard sizes by individual order.
