ALLOYS
Alloy 625
Alloy 625, commonly known as INCONEL® 625, is a Ni-Cr- Mo alloy that is used for its high strength, high toughness, and its oxidation and corrosion resistance. Strength of alloy 625 is derived from the stiffening effect of molybdenum and niobium on its nickel-chromium matrix. Although the alloy was developed for high temperature strength, its highly alloyed composition provides a high level of general corrosion resistance. Applications include and are not limited to: sea water applications, aerospace, chemical processing, and nuclear.
UNS: N06625
Stock Sizes: 1/8” – 3/4” OD
Specifications:
- Seamless Tube: ASTM B444
- NACE MR0175/MR0103
Available Processing:
- Cold Worked and Bright Annealed (Gr.1 Annealed or Gr.2 Solution Annealed)
- Cold Worked
Common Testing: Eddy Current, Flare, Flattening, Positive Material Identification
Chemical Composition (%)
| Chemical | Percentage |
|---|---|
| Iron (Fe) | 5% Max |
| Chromium (Cr) | 20-23% |
| Nickel (Ni) | 58% Min |
| Manganese (Mn) | 0.50% Max |
| Silicon (Si) | 0.50% Max |
| Carbon (C) | 0.10% Max |
| Sulfur (S) | 0.015% Max |
| Phosphorus (P) | 0.015% Maz |
| Chemical | Percentage |
|---|---|
| Cobalt (Co) | 1% Max |
| Molybdenum (Mo) | 8-10% |
| Aluminum (Al) | 0.40% Max |
| Titanium (Ti) | 0.40% Max |
| Columbium/Niobium (Nb) + Tantalum (Ta) | 3.15-4.15% |
| – | – |
| – | – |
Physical Properties
| Property | Measurement |
|---|---|
| Density (lb/in3) | 0.305 |
| Elongation (min %) | 30 |
| Minimum Yield (psi) – Gr. 1 | 60,000 |
| Minimum Yield (psi) – Gr. 2 | 40,000 |
| Minimum Tensile (psi) – Gr. 1 | 120,000 |
| Minimum Tensile (psi) – Gr. 2 | 100,000 |
| Max Hardness (HRB) | 100 |