Alloy Refractaloy 26/ R26 Turbine Bolt used in steam turbine and generating machinery
Alloy R26 bolt, Stud bolt, double bolt, Hexagon bolt
♦ Thread Size: M10-M120
♦ Length: according to clients drawing or specifaction
♦ Application for : Steam turbine generating equipment
♦ Grade: A Class
Refractaloy 26 is Fe - NI - Co - Cr precipitation hardening type deformation of high temperature alloy, long-term use of C - 570 ℃ temperature range of 540 ℃, the highest temperature can reach 677 C, add element of a Cr, mo alloy solid solution strengthening, high to low titanium, aluminum form y aging strengthening phase, while drilling elements made of titanium, aluminum solubility in the solid solution is reduced, prompted y phase precipitation amount increase, so as to improve the thermal stability of y, reduce y 'phase of the stacking fault energy.
The composite properties of the alloy are superior, with excellent tensile resistance, force relaxation and creep resistance, no notch sensitivity.
| Alloy |
% |
Ni |
Cr |
Fe |
Mo |
P |
Co |
C |
Mn |
Si |
S |
B |
Al |
Ti |
|
Refractaloy 26 |
Min. |
35.0 |
16.0 |
bal |
2.5 |
- | 18.0 | - | - | - | - | 0.001 | - | 2.5 |
|
Max. |
39.0 | 20.0 | 3.5 | 0.03 | 22.0 | 0.08 | 1.0 | 1.5 | 0.03 | 0.01 | 0.25 | 3.0 |
|
Density
|
8.2 g/cm³
|
|
Melting point
|
1200 ℃
|
|
Status
|
Tensile strength
Rm N/mm² |
Yield strength
Rp 0. 2N/mm² |
Elongation
As % |
Brinell hardness
HB
|
|
Solution +Aging
|
1000
|
550
|
20
|
331-262
(26-35.5)
|
