chn75tbu - ei869 sheet, round, wire
Relevance
Heat-resistant nickel-based alloy KhN75TBU (obsolete name EI869) is used in the production of rotors, disks, flat springs, fasteners that operate at temperatures up to +650 ° C, as well as in the production of welded fragments and parts of the pipeline fittings. The popularity of this type of products is due to its high quality, variety of assortment, and affordable price.
Technical documentation governing the quality
| Description |
Designation |
Other |
|---|
| Thermochemical and heat treatment of materials |
В04 |
STC KBA 016-2005 |
| Shaped and section rolled products |
В32 |
TUN 14-1- 272-72 |
Chemical composition
| C |
Fe |
Mn |
P |
Ce |
Si |
S |
Ni |
Cr |
Ba |
Al |
|---|
| up to 0.1 |
19.13 - 27.4 |
up to 0.3 |
up to 0.02 |
up to 0.03 |
up to 0.8 |
up to 0.02 |
55 - 58 |
15 - 18 |
up to 0.1 |
2.6 - 3.5 |
Technological characteristics of the alloy KhN75TBU
Weldability:
| Designation |
Description |
|---|
| Limited weldable |
- Preheating to 100-120°C with subsequent heat treatment is required |
| no restrictions |
- No need for preheating and final heat treatment |
| Difficult to weld |
- need for preliminary heating to 200-300°C with the final heat treatment |
Physical properties of the alloy KhN75TBU.
| kg/m3 |
Grad |
MPa |
J/(kg-grad) |
1/Grad |
Ohm-m |
W/(m-grad) |
|---|
| r |
T |
E 10- 5 |
C |
a 10 6 |
R 10 9 |
l |
|
900 |
|
|
15.88 |
|
47.4 |
|
800 |
1.69 |
|
15.18 |
|
40.2 |
|
700 |
|
|
15.11 |
|
34.5 |
|
600 |
|
|
14.59 |
|
29.3 |
|
500 |
|
|
14.22 |
|
24 |
|
400 |
|
|
14.2 |
|
19.6 |
|
300 |
|
|
13.42 |
|
15.9 |
|
200 |
|
|
13.08 |
|
13 |
|
100 |
|
|
12.28 |
|
10.5 |
| 7900 |
20 |
2.1 |
|
|
|
|
Designation:
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 at 20°C of the alloy KhN75TBU.
| Size |
e.g. |
y |
KCU |
s in |
sT |
d5 |
Products |
Heat treatment |
|---|
| mm |
- |
% |
kJ/m2 |
MPa |
MPa |
% |
- |
- |
|
|
|
|
740 |
345-390 |
35 |
GOST 24 982-81, sheet |
Hardened at 1050 - 1090oC |
Mechanical properties:
| Description |
Designation |
|---|
| Limit of proportionality (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 |
Buy at best price
The range of products of CHN75TBU from Evek GmbH satisfies any consumer. The price is determined by the technological features of production without the inclusion of additional costs. With us it is easy to buy in bulk all the necessary products for large-scale production. We also offer favorable conditions for retail customers. You will be satisfied with the level of service and high quality products. On our site. you will find all the necessary information about the goods, be able to download the catalog of products, view the price list. We are waiting for your orders.
