Key Features
Incoloy 825 offers the following key features:
Resistant to reducing environments such as those containing sulphuric and phosphoric acids
Resistant to a variety of oxidising substances such as nitric acid and nitrates
Resistant to chloride-ion stress corrosion cracking and, pitting & crevice corrosion
Good for chemical processing
Typical Applications
Incoloy 825 is known to be suitable for the following applications:
Chemical Processing
Nuclear Fuel Reprocessing
Acid Production
Pickling Equipment
Designations
W.Nr 2.4858
UNS N08825
AWS 022
Specifications
ASTM B425
BS 3075 NA 16
BS 3076 NA 16
ISO 15156-3
(NACE MR 0175)
Density |
Melting Point |
Coefficient of Expansion |
Modulus of Rigidity |
Modulus of Elasticity |
|---|---|---|---|---|
8.14 g/cm³ |
1400 °C |
14.0 μm/m °C (20 – 100 °C) |
75.9 kN/mm² |
196 kN/mm² |
0.294 lb/in³ |
2550 °F |
7.8 x 10-6 in/in °F (70 – 212 °F) |
11009 ksi |
28428 ksi |
Heat treatment of finished partsThe typical heat treatment of Incoloy 825:
Condition as supplied by AWI |
Type |
Temperature |
Time |
Cooling |
|---|---|---|---|---|
Annealed or Spring Temper |
Stress Relieve |
450 – 470 °C (840 – 880 °F) |
0.5 – 1 Hr |
Air |
Properties
The typical mechanical properties of Incoloy 825:
| Annealed | ||
|---|---|---|
| Approx. tensile strength | <800 N/mm² | <116 ksi |
| Approx. operating temperature depending on load** and environment | -100 to +250 °C | -145 to +480 °F |
| Spring Temper | ||
|---|---|---|
| Approx. tensile strength | 800 – 1100 N/mm² | 116 – 159 ksi |
| Approx. operating temperature depending on load** and environment | -100 to +250 °C | -145 to +480 °F |