Alloy 725 is a precipitation hardenable, nickel-base alloy that offers exceptional resistance to stress corrosion cracking and general pitting and crevice corrosion in the age hardened condition. With corrosion resistance similar to 625 and superior to that of 718, 725 is considered for applications where severely corrosive environments are a concern. A yield strength (0.2% offset) above 120 ksi (827 MPa) can be obtained by aging without prior warm or cold working. The precipitation hardening capability is particularly important in applications where large-section size or intricate shape precludes warm working.
Inconel 725 Chemical Composition| Alloy |
% |
Ni |
Cr |
Fe |
Mo |
P |
Nb |
C |
Mn |
Si |
S |
Al |
Ti |
|
725 |
Min. |
55.0 |
19.0 |
balance |
7.0 |
- | 2.75 | - | - | - | - | - | 1.0 |
|
Max. |
59.0 |
22.5 |
9.5 |
0.015 | 4.0 | 0.03 | 0.35 | 0.2 | 0.01 | 0.35 |
1.7 |
Inconel 725 Physical Properties
| Density | 8.3 g/cm³ |
| Melting point | 1271-1343 ℃ |
|
Status |
0.2% Yield Strength |
Ultimate Tensile Strength |
% Elongation in 4D |
% Reduction of Area |
Brinell hardness HB | HRC | |||
|
ksi |
MPa |
ksi |
MPa |
Ft.-lbs |
J | ||||
|
Solution Annealed |
47 |
324 | 117 | 806 | 70 |
72 |
- |
- | 28 |
|
Solution Annealed + Aged |
134 |
923 |
186 |
1282 |
33 |
51 |
87 |
118 | 35 |
| Bar/Rod | Wire |
| ASTM B 805, ASME Code Case 2217,SMC specification HA91, ASME Code Case 2217 | ASTM B 805, ASME Code Case 2217 |
Round bars/Flat bars/Hex bars, Size From 8.0mm-320mm, Used for bolts,fastners and other spare parts
Widths up to 1500mm and lengths up to 6000mm,Thickness from 0.1mm to 100mm.
Standards size and customized dimension can be produced by us with small tolerance
Forging Ring or gasket,size can be customized with bright surface and precision tolerance
Can be produced according to clients drawing or smaples with precision tolerance.
Alloy 725 materials in forms of Bolts,screws,flanges and other fasterners, according to clients specification.
• lron-nickel-chromium-molvbdenum-niobium based alloy, good resistance to a wide range of corrosive chemicals. Highly resistant to corrosion, pitting, and stress cracking in the environment containing carbon dioxide, chlorine and hydrogen sulfide.Outstanding corrosion resistance for the environments containing acidic chemicals.Good corrosion resistance for brine and seawater.
• Good corrosion resistance at high temperature applications. such as oil and gas production. where the alloy has good resistance to H2S corrosion.
Bearings and other parts for the equipment which requires high resistance to acidic chemicals or environments. The parts or equioment used in ocean conditions