430 Stainless Steel Coil
430 stainless steel coil is quoted as ferritic flat-rolled material by grade, thickness, width, finish and coil geometry. Common inquiry range: 0.2–3.0 mm, 1000/1219 mm or slit from 20 mm. Send the corrosion and forming duty with the RFQ.
Supply routes
- In-house production or processing
- Qualified partner-mill sourcing
- Stock coordination
Grade datasheets:430
Where this product solves the job
- Indoor appliance skins, equipment panels and trim where the project accepts Type 430 corrosion performance.
- Magnetic components or assemblies when magnetic response is part of the approved product design.
- Stamped or roll-formed parts with an agreed temper, surface sample, grain direction and forming trial.
When we recommend another route
- Coastal, chloride-bearing or aggressive cleaning exposure without a project-specific corrosion review.
- Orders that substitute 430 for 304 solely on appearance without checking forming, welding and service conditions.
- Deep-drawn parts with no agreed mechanical-property range, lubrication plan or trial acceptance criteria.
Standards we quote against
Send the product standard, edition and any dimensional or finish standard with the RFQ. We quote the ordered combination, not a generic grade name.
Ordered product standards: ASTM A240/A240M · JIS G4305
What to send so we can quote the right route
- Name Type 430, the flat-product standard and edition, delivery condition and any project chemistry restriction.
- State thickness, slit or mill width, tolerance, edge condition, camber limit and quantity for each coil size.
- Define 2B, BA or No.4 appearance by critical face, grain direction, reference sample, film and inspection conditions.
- Provide coil ID, maximum OD, maximum coil weight, winding orientation and downstream line constraints.
- Describe drawing depth, bend radius or roll-forming route when temper and formability control the purchase.
Specifications
| Grade | 430 |
|---|---|
| Standard | ASTM A240/A240M, JIS G4305 |
| Thickness | Common inquiry range: 0.2–3.0 mm. |
| Width | Common inquiry range: 1000 / 1219 mm, slit from 20 mm. |
| Coil ID | Common inquiry range: 508 / 610 mm. |
| Coil weight | Common inquiry range: 3–12 t, or as required. |
| Finish | BA, 2B, No.4 |
| Commercial basis | Quantity, MOQ, production route and delivery schedule are quoted for the ordered specification. |
Dimensions and Tolerances
| Thickness | Common inquiry range: 0.2–3.0 mm. |
|---|---|
| Width | Common inquiry range: 1000 / 1219 mm, slit from 20 mm. |
| Order basis | Governing product and dimensional standard, delivery condition and any drawing-specific limits. |
| Special tolerances | Send special tolerances in the RFQ; we quote the accepted production route. |
Published ranges are technical references, not a live-stock or production-capability promise. We confirm the ordered size range, MOQ and delivery schedule in the quotation.
Edge or end condition
- Edge, end or facing condition as ordered from the product form, standard and fabrication need.
Testing and inspection
- Tests required by the purchased product standard.
- PMI, NDE, corrosion, roughness or other supplementary inspection quoted when the RFQ names method, lot scope and acceptance.
Order documents
- Heat identity with EN 10204 3.1, or the inspection document named in the RFQ, against mill, stock or partner-mill route.
- Supplementary reports linked to the ordered test plan.
Export packaging
- Coils wrapped with edge protection and moisture barrier; eye orientation as ordered.
- Unit weight and ID/OD stated in the quotation for lifting and pay-off.
Quote 430 for indoor appliance work
Type 430 is a ferritic grade quoted for indoor appliance panels, equipment trim and formed components. Send the drawing, service environment and forming trial with the RFQ so we can match magnetic behavior and fabrication response.
Quote BA appearance
For visible panels, send an approved appearance reference, critical face, grain direction, inspection conditions and protective-film behavior. We quote the matching surface and inspection route.
Where we recommend another grade
For outdoor, coastal or chloride-cleaning duty, send the service assumptions with the RFQ. We quote 430 or a higher-alloy route after that review. Compare with 304 and the 430 grade page.
Common ordering mistakes
- Treating all bright-annealed coils as visually identical without an approved reference sample and viewing conditions.
- Omitting slit-edge burr, camber and coil-set limits that affect continuous feeding and panel alignment.
- Assuming magnetic response alone verifies grade, condition or suitability for the intended service.
- Selecting protective film without checking forming, storage temperature, adhesive residue and removal timing.
Handling and transport risks
- Telescoping or edge damage can occur when coil weight, eye orientation and restraint are not matched to handling equipment.
- Bright or brushed faces can pick up roll marks, abrasion or trapped particles during recoiling and transport.
- Moisture retained beneath film or wraps can mark visible surfaces during storage and ocean shipment.
- Unsupported slit coils can dish or distort if skids, separators and banding pressure are not sized for the package.
Technical content updated: 2026-07-31
Published by Tsingshan (Shandong) Iron & Steel Co., Ltd..Sources, update policy and technical limitations.
Typical Applications
Related technical resources
Grades
Published standards
Applicable standards
ASTM A240/A240M · JIS G4305
What to Include in Your RFQ
Send the known values first. We use them to quote the ordered option, inspection plan and delivery route.
- Grade and governing standard
- 430; ASTM A240/A240M, JIS G4305. State the exact ordered combination.
- Dimensions and tolerances
- Provide thickness, width and identify which order basis, special tolerances requirements govern acceptance.
- Finish, processing and edge or end condition
- 2B, BA, No.4; Stainless Steel Coil Slitting, Stainless Steel Cut-to-Length and Leveling, Stainless Steel Polishing and Surface Finishing; Edge, end or facing condition as ordered from the product form, standard and fabrication need..
- Inspection, documents and packing
- Testing: Tests required by the purchased product standard.; PMI, NDE, corrosion, roughness or other supplementary inspection quoted when the RFQ names method, lot scope and acceptance. Documents: Heat identity with EN 10204 3.1, or the inspection document named in the RFQ, against mill, stock or partner-mill route.; Supplementary reports linked to the ordered test plan. Packing: Coils wrapped with edge protection and moisture barrier; eye orientation as ordered.; Unit weight and ID/OD stated in the quotation for lifting and pay-off.
- Quantity, destination and requested delivery window
- Send quantity per size, unit, destination city or port, trade term and requested delivery window so we can quote the supply and freight route.
Product RFQ Example
RFQ example: ASTM A240 Type 430 cold-rolled coil, 0.8 x 420 mm slit width, BA critical outer face to an approved sample, agreed thickness and camber tolerance, deburred edge, 508 mm ID, stated maximum OD and coil weight, film suitable for the named forming route, ordered inspection document, export packing and destination; we quote the matching route and delivery window.
Frequently Asked Questions
Can Type 430 coil replace 304 on an appliance panel?
Only after the designer reviews corrosion exposure, cleaning chemistry, forming, joining and appearance requirements. A similar polished appearance does not make the two grades interchangeable.
Which forming information should accompany a 430 coil RFQ?
Include the part geometry, drawing depth or bend radius, feed direction, planned lubrication, required mechanical-property range and trial criteria. These inputs help align temper and coil route with the actual operation.
How should BA appearance be approved for visible panels?
Define the critical face, reference sample, viewing distance and lighting, acceptable roll or handling marks, protective film and inspection timing. BA as a finish name alone is not a complete visual acceptance standard.
What should be stated for slit-edge quality on 430 coil?
State slit width and tolerance, burr limit and measurement side, edge condition, camber requirement and downstream feed sensitivity. Send these limits with thickness so we can quote the matching coil route.
Does magnetic attraction confirm that a coil is Type 430?
No. Magnet response can support sorting but does not by itself establish grade, chemistry or condition. Use the ordered marking, traceability and document requirements, with supplementary verification when specified.
Quote request
Get a Stainless Steel Quote
Send the product, grade and quantity you already have. We will complete the specification and quote the supply route.