ALLOY 625 | 2.4856 - Data sheet
UNS N06625 | ASTM B 446 | AMS 5666 | AMS 5999 | NACE MR-0175
Alloy 625 is used due to its high strength and excellent corrosion resistance in aqueous media as well as in high temperature oxidizing and carburizing environments. The high chromium and molybdenum content provides a high degree of pitting and crevice corrosion resistance to chloride-containing media such as seawater, neutral salts and salt solutions. The alloy is highly resistant to chloride stress corrosion cracking due to its high nickel content. The strength of Alloy 625 is derived from the matrix-strengthening effect of molybdenum and niobium, which means hardening heat treatments are unnecessary. Alloy 625 retains its excellent ductility and toughness at cryogenic temperatures. It also has excellent malleability and is easy to weld.
Product forms for ALLOY 625 | 2.4856
- 12,70 mm Ø
- 16,00 mm Ø
- 20,00 mm Ø
- 25,00 mm Ø
- 25,40 mm Ø
- 30,00 mm Ø
- 35,00 mm Ø
- 40,00 mm Ø
- 45,00 mm Ø
- 50,00 mm Ø
- 50,80 mm Ø
- 60,00 mm Ø
- 65,00 mm Ø
- 70,00 mm Ø
- 80,00 mm Ø
- 90,00 mm Ø
- 100,00 mm Ø
- 110,00 mm Ø
- 114,30 mm Ø
- 127,00 mm Ø
- 152,40 mm Ø
- 165,10 mm Ø
- 177,80 mm Ø
- 0,50 mm x 1220 mm
- 0,80 mm x 1220 mm
- 1,00 mm x 1220 mm
- 1,20 mm x 1220 mm
- 1,60 mm x 1220 mm
- 2,00 mm x 1220 mm
Areas of application for ALLOY 625 | 2.4856
Seals and closures, piping and exhaust systems, motorsport exhaust systems, bellows and expansion joints, furnace equipment, valve components.
Characteristics ALLOY 625 | 2.4856
Chemical composition - limits in %
| Ni | min. 58,00 |
| Cr | 20,00 - 23,00 |
| Mo | 8,00 - 10,00 |
| Fe | max. 5,00 |
| Nb | 3,15 - 4,15 |
| Mn | max. 0,50 |
| Si | max. 0,50 |
| Al | max. 0,40 |
| Ti | max. 0,40 |
| C | max. 0,10 |
Physical constants and thermal properties
| Density | 8,44 g/cm³ |
| Melting point | 1290 - 1350 °C |
| Thermal conductivity | 9,8 W/m · °C |
| Coefficient of expansion at 21 - 93°C |
12,8 μm/m · °C |
Typical mechanical properties (room temperature)
| Yield strength | min. 330 MPa |
| Tensile strength | min. 730 MPa |
| Elongation | min. 35% |
All information is subject to change without notice. The properties correspond to the material in the heading. They may vary for other specifications. Please contact us for more details.
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Julius Mönkeberg
Product Manager Nickel and Cobalt Alloys
+49 4174 66 94-118
j.moenkeberg@sd-metals.com
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