Alloy 625 (UNS N06625)
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Alloy 625 (ASTM B443/ ASTM B444)
Alloy 625 is a nickel-based superalloy renowned for its exceptional corrosion resistance, high strength, and excellent fabricability. Its composition includes nickel, chromium, molybdenum, and niobium, which provide resistance to oxidation, pitting, and crevice corrosion in harsh environments. This makes it a preferred choice in aerospace, marine, and chemical processing industries.
Features of Alloy 410:
- Exceptional Corrosion Resistance: Performs well in both acidic and alkaline environments, resisting pitting and crevice corrosion.
- High Strength: Retains mechanical properties in a wide range of temperatures.
- Oxidation and Scaling Resistance: Effective in high-temperature environments.
- Weldability: Suitable for welding without the need for post-weld heat treatment.
Specifications:
Applicable Standards:
- ASTM Standards: (List relevant standards such as ASTM B443, ASTM B444, etc.)
- UNS Designation: UNS N06625
- Other: (Include ISO or EN designations if applicable)
Composition
| Property | Value |
|---|---|
| Nickel (Ni) | 58.0% Min |
| Chromium (Cr) | 20.0-23.0% |
| Molybdenum (Mo) | 8.0-10.0% |
| Niobium (Nb) | 3.15-4.15% |
| Iron (Fe) | 5.0% Max |
| Carbon (C) | 0.10% Max |
| Manganese (Mn) | 0.50% Max |
| Silicon (Si) | 0.50% Max |
| Sulfur (S) | 0.015% Max |
Physical Properties
| Element | Percentage (%) |
|---|---|
| Density | 8.44 g/cm³ |
| Melting Point | 1290-1350°C |
| Hardness (BHN) | ~220 BHN |
| Tensile Strength | 760 MPa (110,000 psi) |
| Yield Strength | 415 MPa (60,000 psi) |
| Elongation | 50% |
| Thermal Conductivity | ~9.8 W/m·K |
| Coefficient of Thermal Expansion | ~12.8 x 10^-6 /°C |