Alloy 625 AMS 5666
A highly machinable, corrosion resistant alloy used in oil & gas, marine and aerospace components.
- ASTM B446-03 Grade 1
- UNS N06625 GRADE 1 / DIN 2.4856
- AMS 5666 REV F
- BS3076 1989 NA21
- NACE MR0175 (ISO 15156-3, latest version)
We can convert to ASTM B446-03 Grade 2 – please enquire.
Fully certified material, additional testing available.
Same day quote, next day dispatch
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Broder Metals Group stock Alloy 625 in a range of sizes from 6mm dia to 127mm dia, and have quick access to larger sizes on request.
We stock Alloy 625 in the annealed condition to provide good strength and hardness. Typical applications are where contact with sea water and other harsh chemical environments and mechanical stresses apply.
Although most core stock is in round bar we can also supply rings and bored bar – please contact us with your requirements.
Material is made with a fine grained melting method practice.
Alloy 625 Chemical Composition
| C | Mn | Si | P | S | Cr | Ni | Mo | Ti | Al | Co | Fe | Nb | |
| Min | - | - | - | - | - | 20.0 | 58.0 | 8.00 | - | - | - | - | 0.15 |
| Max | 0.10 | 0.50 | 0.50 | 0.015 | 0.015 | 23.0 | Bal | 10.0 | 0.40 | 0.40 | 1.0 | 5.0 | 4.15 |
Alloy 625 Mechanical Properties
| Up to 4" (100mm) | @ Room Temperature |
| Tensile Strength | 120 Ksi (828 Mpa) minimum |
| Yield Strength (0.2% offset stress) | 60 Ksi (414 Mpa) minimum |
| Elongation in 2". min % | 30.00% |
| Reduction in area min % | 35.00% |
| Charpy V-notch test | At or below -60 deg C in longitudinal and the transverse direction where the section size permits. Pass Values: Longitudinal: Average of 3 tests impact value – 42 Joules minimum Single impact value – 33 Joules minimum. Transverse: Average of 3 tests impact value – 21 Joules minimum Single impact value – 14 Joules minimum |
| Hardness | 2 Brinell hardness tests, one on a test piece and one on the product. Pass value 187-321 HB. |
| Between 4” (100 mm) and 10” (250 mm) | @ Room Temperature |
| Tensile Strength | 110 Ksi (758 Mpa) minimum |
| Yield Strength (0.2% offset stress) | 60 Ksi (414 Mpa) minimum |
| Elongation in 2in. min % | 30.00% |
| Reduction in area min % | 35.00% |
| Charpy V-notch test | At or below -60 deg C in longitudinal and the transverse direction where the section size permits. Pass Values: Longitudinal: Average of 3 tests impact value – 42 Joules minimum Single impact value – 33 Joules minimum. Transverse: Average of 3 tests impact value – 21 Joules minimum Single impact value – 14 Joules minimum |
| Hardness | 2 Brinell hardness tests, one on a test piece and one on the product. Pass value 187-321 HB. |
For more technical information download our Alloy 625 information sheet here
Applications:
Alloy 625 is used within the aerospace, marine, nuclear and chemical processing markets for:
- Pollution Control Equipment
- Jet Engine Parts
- Heat Exchangers
- Pressure Valves
- Turbine shroud rings
- Flare stacks
- Seawater components
- Chemical process equipment handling mixed acids both oxidizing and reducing.
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