X27Yu5T alloy
Alloy Kh27Yu5T
Alloy X27Yu5T: a classifier of steels and alloys. Below is systematized information on the purpose, chemical composition, types of supply, substitutes, critical point temperature, physical, mechanical, technological and foundry properties for the brand — Alloy X27Yu5T.
General information about X27Yu5T alloy
| Delivery type |
| Bar stock, including shaped: GOST 12766.4−77. Calibrated rod GOST 12766.377. Tape GOST 12766.277. Wire 12766.1−77. |
| Application |
| For electric heating elements of furnaces with a maximum operating temperature of 1350 ° C. |
Chemical composition of X27Yu5T alloy
| Chemical element |
% |
| Aluminum (Al) |
5.0−5.8 |
| Silicon (Si), not more |
0.6 |
| Manganese (Mn), not more than |
0.3 |
| Nickel (Ni), not more than |
0.6 |
| Sulfur (S), not more than |
0.015 |
| Titanium (Ti) |
0.15−0.40 |
| Carbon ©, not more than |
0.05 |
| Phosphorus (P), not more |
0.02 |
| Chrome (Cr) |
26.0−28.0 |
| Zirconium (Zr), not more than |
0.1 |
Mechanical properties of X27Yu5T alloy
Mechanical properties depending on the test temperature
| t test,°C |
σ0, 2, MPa |
σB, MPa |
δ5, % |
ψ, % |
| Wire of 0.1−7.5 mm cross-section. Heating at 760 °C, 30 min, water. |
| 20 |
534 |
663 |
16 |
|
| 200 |
425 |
660 |
24 |
62 |
| 400 |
357 |
605 |
25 |
53 |
| 600 |
354 |
375 |
33 |
71 |
| 800 |
|
87 |
76 |
97 |
| 1000 |
|
13 |
127 |
|
| 1200 |
|
9 |
118 |
|
Technological properties of X27Yu5T alloy
| Forging temperature |
| Beginning 1150, end 1000. |
| Weldability |
| Welding methods — RTD and ADS. Welding of heaters with operating temperature higher than 1100 C is carried out with direct current electrodes made of the same material with 0,3L-8 cladding. Welding of heaters with operating temperature up to 1100 C is carried out with conventional electrodes from heat-resistant materials. ADS — non-consumable electrodes with the use of additive material of X27Yu5T alloy. When welding the heaters must be covered with asbestos sheets to avoid splashing and damage to the wire in this place. |
| Tendency to tempering capacity |
| Is prone in the temperature range of 400−500 C. |
| Flocene sensitivity |
| is not sensitive. |
Physical properties of X27Yu5T alloy
| Test temperature,°C |
20 |
100 |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
| Alloy density, pn, kg/m3 |
7190 |
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| Electrical resistance (p, nominal — m) |
1130 |
1135 |
1370 |
1375 |
1380 |
1400 |
1400 |
1410 |
1410 |
1420 |
| Test temperature,°C |
20−100 |
20−200 |
20−300 |
20−400 |
20−500 |
20−600 |
20−700 |
20−800 |
20−900 |
20−1000 |
| Coefficient of linear expansion (a, 10−6 1/°C) |
15.0 |
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