Stainless steel
430F Stainless
Manufacturer or standards-body identification; product values do not apply to every form or condition.
Identity / state reference
What distinguishes this material
430F is a free-machining ferritic grade; solenoid-quality and other specially controlled variants need their own product identity.
- Designation in this reference
- Type 430F
- Forms covered by the sources
- Carpenter 430F product; obtain the ordered bar/wire specification.
- States to distinguish or confirm
- Specify annealed condition and magnetic-property requirements where relevant.
- Temperature and exposure
- No universal service-temperature limit or room-temperature property set is assigned. Use the cited product document and the purchase certificate.
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.
Carpenter 430F alloy page
430F free-machining grade; separately controlled solenoid-quality/FR variants must not be conflated.
Carpenter 430F alloy page ↗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 assumed equality with generic 430 and with every 1.4104 product; do not use a solenoid-quality result as a base-grade guarantee.
- Withdraw the legacy generic hardness (85 HRB) and tensile-strength (480 MPa (70 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.