430F / SUS430F / 1.4104 Free-Machining Stainless Steel Bars
Junxiong supplies cold-drawn stainless steel bars and custom solid profiles for machining applications. Send the required designation, governing standard, shape, size, tolerance, condition, surface, quantity and end use for a technical review and quotation.
Send a complete 430F / SUS430F / 1.4104 RFQ or send the standard, shape, size, tolerance and quantity by WhatsApp.
Important equivalence note: AISI 430F, UNS S43020, EN 1.4104 / X14CrMoS17 and JIS SUS430F are commonly searched together, but they must not be treated as automatically interchangeable without checking the purchase standard, chemistry, condition and mill test certificate.
Factory Production and Export Packing Evidence
Review the factory, ISO 9001 and order-specific evidence boundaries before supplier approval. Representative bar and packing images do not establish 430F identity; the ordered heat requires its own matching MTC and inspection documents.
Short Answer
430F is a free-machining ferritic stainless grade used when chip breaking and machining productivity are more important than the corrosion resistance and formability of non-free-machining 430. Junxiong reviews round, hex, square, flat and custom-profile enquiries against the buyer’s exact standard, dimensions, tolerance, quantity, application and documentation requirements.
Technical Facts
- Common search designations: AISI 430F, UNS S43020, EN 1.4104, X14CrMoS17 and JIS SUS430F.
- Sulfur improves chip breaking and machinability but can reduce corrosion resistance and weldability compared with non-free-machining 430.
- A steelmaker reference for EN 1.4104 lists cast-analysis ranges of C 0.10-0.17%, S 0.15-0.35%, Cr 15.5-17.5% and Mo 0.20-0.60%.
- Those chemistry figures are reference data, not a Junxiong certificate; the applicable order standard and MTC control the order.
- Shape, size, tolerance, straightness, surface and supply condition require factory review before quotation.
Standards and Primary Reference Sources
- ASTM A582/A582M-22: the ASTM specification for hot- or cold-finished free-machining stainless steel bars.
- BS EN 10088-3:2023: technical delivery conditions for stainless bars, rods, sections and bright products.
- JIS G 4318:2016: the Japanese standard for cold-finished stainless steel bars.
- Swiss Steel Group 1.4104 / X14CrMoS17 data sheet: the manufacturer source used for the reference chemistry range above.
- Daido Steel free-cutting stainless selection: an official steelmaker product reference listing SUS430F / 430F for screws, bolts, nuts and machined parts. It is not a Junxiong batch certificate.
- Swiss Steel Group 1.4105 / X6CrMoS17 data sheet: an official producer route identifying a sulfur-alloyed ferritic stainless grade and listing 430F, UNS S43020 and SUS430F comparison designations.
- Zapp precision-wire and bar range: producer-specific 1.4105 variants with different 430F, 430FR or unassigned AISI comparison routes.
- Zapp 1.4105 IL solenoid-material data sheet: a producer-specific soft-magnetic route for precision turned parts; its property claims are not universal for every 1.4105 bar.
Reference boundary: these publisher and manufacturer sources help the buyer identify the correct procurement route. They are not Junxiong batch certificates, do not prove automatic equivalence between 430F, SUS430F, 1.4104 and 1.4105, and do not replace the governing purchase standard or heat-specific MTC.
Buyer Checklist
- Grade designation and governing standard.
- Round, hex, square, flat or custom cross-section.
- Diameter or complete section dimensions.
- Tolerance, straightness and corner-radius requirements.
- Cold-drawn, ground, peeled or other required condition.
- Surface and permitted defect criteria.
- Fixed length or random length.
- Quantity per size and annual demand.
- MTC, inspection and heat-number traceability requirements.
- End use, machining process and destination country.
Grade and Search Designations
| Market / system | Common designation | Procurement note |
|---|---|---|
| United States | AISI 430F / UNS S43020 | Confirm ASTM or customer specification and required condition. |
| Europe | EN 1.4104 / X14CrMoS17 | Confirm EN product standard, analysis and mechanical condition. |
| Japan | JIS SUS430F | Confirm JIS designation and whether exact equivalence is accepted. |
| General trade | 430F free-machining stainless steel | Do not quote on the trade name alone. |
Product Forms
- Cold-drawn round bars for automatic turning and shaft-type components.
- Cold-drawn hex bars for fittings, fasteners and machined hardware.
- Cold-drawn square bars for precision-machined blocks and hardware.
- Cold-drawn flat bars for machined components and special blanks.
- Custom solid profiles reviewed from drawing, sample or cross-section data.
- Cut-to-length and secondary operations after drawing and process review.
Typical Applications
- Automatic-lathe and Swiss-type turned parts.
- Fasteners, screws, fittings, pins and bushings.
- Instrument and appliance hardware.
- Valve, pump and general precision-machined components.
- Custom parts requiring magnetic stainless steel and improved machinability.
Application suitability depends on corrosion exposure, loading, heat treatment, surface condition and downstream processing. The buyer remains responsible for final material selection.
430F versus 430
| Buying question | 430F | 430 |
|---|---|---|
| Main selection driver | Improved chip breaking and machinability. | Better formability and corrosion performance within the base grade family. |
| Sulfur | Intentionally increased for free machining. | Lower than a free-machining grade. |
| Welding / forming | More restricted; review required. | Generally more suitable than 430F. |
| Best RFQ wording | Include standard, condition, MTC and machining use. | Include standard, forming route and corrosion environment. |
1.4105 Stainless Steel and X6CrMoS17 Need a Separate RFQ Review
Junxiong can review 1.4105 stainless steel and X6CrMoS17 bar or profile enquiries, but this EN route must not be merged automatically with 1.4104 / X14CrMoS17. Steelmaker literature may place particular 1.4105 variants beside 430F, 430FR, UNS S43020 or SUS430F, while the exact chemical limits, magnetic properties, delivery condition and product availability remain order-specific decisions.
| Buyer term | Primary-source context | Quotation rule |
|---|---|---|
| EN 1.4105 / X6CrMoS17 | Swiss Steel identifies a sulfur-alloyed ferritic stainless route under DIN EN 10088-3. Zapp lists several producer variants, including soft-magnetic solenoid-material routes. | State 1.4105 or X6CrMoS17, the governing product standard and edition, shape, dimensions, condition, corrosion duty, magnetic requirements and MTC scope. |
| AISI 430F / 430FR and UNS S43020 comparisons | Producer tables may assign 430F, 430FR or no universal AISI identity to different 1.4105 variants. | Treat these as producer or buyer comparison terms until the ordered chemistry, condition and property limits are approved. Do not substitute by nickname alone. |
| EN 1.4104 / X14CrMoS17 | The existing 1.4104 route on this page has a different EN number and chemical designation from 1.4105, even when both appear near 430F in cross-market literature. | Keep 1.4104 and 1.4105 as separate quotation lines and require the heat-specific certificate to match the approved designation. |
Supply boundary: enquiry review is not a current-stock or batch claim. Actual shape, size, condition, magnetic-property route, minimum quantity, schedule and inspection evidence must be confirmed for the order.
FAQ
Is 430F the same as SUS430F or 1.4104?
They are commonly cross-searched and may be treated as comparable in some supply chains, but they are not a universal one-line substitution. Quote against the buyer’s governing standard and confirm chemistry, mechanical condition and MTC.
Is 430F suitable for Swiss-type machining?
It is commonly selected for automatic and Swiss-type turning because sulfur improves chip breaking. Bar condition, straightness, diameter tolerance, surface and tool setup still need to match the machining process.
Can Junxiong supply round, hex, square and flat bars?
Send the grade, shape, dimensions, tolerance, quantity and destination. Junxiong will review production feasibility and confirm the available route before quoting.
Does 430F have the same corrosion resistance as 430?
No assumption should be made. The sulfur addition that improves machining can reduce corrosion performance. Confirm the service environment and required standard before selection.
What documents should be requested?
Specify the required mill test certificate, heat-number traceability, chemical analysis, mechanical-property report and any third-party inspection in the RFQ.
What is needed for a custom profile quotation?
Provide a drawing or clear cross-section with material designation, dimensions, corner radii, tolerances, length, quantity, functional surfaces and end use.
Is 1.4105 the same as 1.4104 or every 430F bar?
No automatic substitution is assumed. 1.4105 / X6CrMoS17 and 1.4104 / X14CrMoS17 are separate EN designations, while individual producers may use different 430F or 430FR comparison routes. The purchase standard, chemistry, condition and MTC must control acceptance.
Can 1.4105 be specified for soft-magnetic solenoid parts?
Some producer-specific 1.4105 variants are designed for soft-magnetic precision parts. State the required coercive field strength, permeability or other magnetic acceptance criteria, bar condition, test method and inspection certificate instead of assuming those properties from the grade number alone.
Compare 430F, 430 and 416 Before Specifying the Bar
430F, base 430 and 416 answer different machining and property requirements. Review the 430F vs 430 vs 416 stainless steel bar buyer selection guide before sending the governing standard, delivery condition and inspection requirements.
Do not fold 420F into this ferritic 430F route. Review the separate 420F, 420FSe and SUS420F free-machining stainless bar guide when a hardenable martensitic route is required.
Request a Technical Review and Quote
Send your grade, standard, shape, size, tolerance, quantity, application and destination country. For custom profiles, attach a drawing or section sketch.
Machining buyers can also review our cold drawn steel bar guide for Swiss-type CNC machining to confirm tolerance, straightness, surface, fixed length and batch information before RFQ.
Related pages: Stainless steel cold drawn bars and profiles | Custom cold drawn steel profiles | Cold drawn round steel bar | Cold drawn hexagonal steel bar | Contact Junxiong