Stainless steel
2507 Super Duplex
Manufacturer or standards-body identification; product values do not apply to every form or condition.
Identity / state reference
What distinguishes this material
SAF 2507 is the cited superduplex product. Distinguish the certified S32750 product and condition from ordinary 2205.
- Designation in this reference
- 2507 / UNS S32750
- Forms covered by the sources
- Alleima seamless tube product.
- States to distinguish or confirm
- Confirm the supplier’s solution-annealed delivery condition.
- Temperature and exposure
- No universal service-temperature limit or room-temperature property set is assigned. Use the cited product document and the purchase certificate.
Other search names in these sources
UNS S32750
Read the scope above: a source’s related product name is not a blanket interchangeability statement.
Property evidence for a stated condition
No condition-specific numerical table is reproduced here
The linked sources establish the identity and the stated product/state scope. Obtain the row for your actual form, section, treatment and test conditions before adopting strength, hardness or a thermal limit.
Resolve these conditions next
- What product standard, edition and complete grade are on the material certificate?
- What product form, section size and delivery/heat-treatment condition will be machined?
For machining, take the exact grade, supplied condition and measured hardness where applicable into the tool maker’s application data. A generic material-family speed is not a substitute for an operation and tool-specific recommendation.
Sources and what they establish
Reviewed 23 October 2026. A source’s publication date and the review date are different. The scope below identifies the fields checked.
Alleima SAF 2507 seamless tube datasheet
Current seamless-tube product and S32750 identity; not generic ferrite-fraction or tooling multipliers.
Alleima SAF 2507 seamless tube datasheet ↗Source identity, a named product example and a supplied-batch certificate are different evidence. Cross-standard similarity does not approve substitution.
Corrections from the previous article
- Remove the unsupported claim that 2507 necessarily has more ferrite than 2205 and the fixed machining multiplier.
- Withdraw the legacy generic hardness (290–330 HB) and tensile-strength (800 MPa (116 ksi)) pair: the old page does not establish a matching product, heat treatment, section and test source.
- Remove the unsupported cutting-speed table and machinability percentage; select tooling only after the actual material condition is known.
Other references in Stainless steel
Related references, not equivalent substitutes.