430 Stainless Steel (UNS S43000)
Ferritic · ASTM A240/A240M · Density 7.7 g/cm³
Type 430 (UNS S43000 / EN 1.4016, X6Cr17) is a ~17% chromium ferritic stainless steel with no deliberate nickel addition, so nickel cost is lower and more stable than 304. Annealed sheet and coil are common for magnetic appliance panels, decorative trim and indoor architectural faces in BA or 2B — not a marine or chloride-primary substitute for 304, and not automatic for heavy welded fabrication without a qualified procedure. Buyers searching “430 / 1.4016 / S43000” are usually naming the same ferritic family under ASTM/UNS and EN aliases.
Quotation brief
Quote 430 When
Quote 430 when the RFQ names magnetic ferritic sheet or coil for dry indoor appliance, decorative trim or light architectural faces, and the buyer accepts a chromium stainless without deliberate nickel alloying instead of 304 after reviewing corrosion, cleaning and appearance. Write UNS S43000 or EN 1.4016 (X6Cr17) explicitly so ASTM and European aliases resolve to the same heat chemistry. BA and 2B are the usual decorative finishes; annealed flat product under ASTM A240 is the common starting condition. Treat 430 as a cost-and-magnetism tradeoff for MENA/SEA indoor appliance programs — not a marine, chloride-primary or heavy welded structural substitute for 304.
Best fit
- Annealed sheet and coil orders naming UNS S43000 or EN 1.4016 for magnetic appliance skins, range hoods, backsplashes and indoor trim.
- Cost-sensitive decorative flat products where avoiding deliberate nickel alloying matters after corrosion and forming severity are reviewed.
- Export appliance and trim programs to Middle East and Southeast Asia destinations with agreed BA/2B appearance, film and packing protection.
Limits to check
- Coastal salt, persistent wetting and chloride cleaners can stain or pit earlier than on 304; do not specify 430 for marine or chloride-primary service without exposure evidence.
- Weld HAZ grain growth can reduce toughness as thickness and restraint increase — qualify any welding procedure; this page does not supply a contractual WPS.
- Lower room-temperature formability than common austenitics makes severe deep drawing and complex stretch forming less forgiving than 304 or annealed 201.
Quoted product forms
Quoted product forms for 430 Stainless Steel (UNS S43000)
We quote 430 Stainless Steel as sheet / plate, coil / strip against the named product standard.
- Traceability: heat or lot identity plus the inspection document named in the RFQ (EN 10204 3.1 when that route supports it).
- Processing: decoiling, cutting, polishing, shearing and beveling as ordered.
- Next step: send product form, size and quantity; we quote the supply route.
Chemical Composition (wt%)
| C | Mn | Si | Cr | P | S |
|---|---|---|---|---|---|
| ≤0.12 | ≤1.00 | ≤1.00 | 16.0–18.0 | ≤0.040 | ≤0.030 |
Single values are maximums unless a range is shown. Balance: Fe. Per ASTM A240/A240M.
Mechanical Properties
| Tensile strength | ≥450 MPa (65 ksi) |
|---|---|
| Yield strength (0.2%) | ≥205 MPa (30 ksi) |
| Elongation (50 mm) | ≥22% |
| Hardness | ≤183 HBW |
Room-temperature minimum values are summarized for annealed flat product under ASTM A240/A240M unless a condition is named in the property label; product form and thickness can change the requirement.
Physical Properties & Structure
| Density | 7.7 g/cm³ |
|---|---|
| Magnetic response | Magnetic in the usual annealed condition because the room-temperature matrix is ferritic. |
| Microstructure | Ferritic (chromium stainless; no deliberate nickel addition) |
Corrosion Resistance & Limits
- 430 forms a chromium-rich passive film suited to dry indoor atmospheres and many decorative appliance faces, but coastal exposure, persistent wetting and chloride cleaners can stain or pit sooner than on common austenitic grades such as 304.
- Ferritic grades generally resist chloride stress-corrosion cracking better than common austenitics, while pitting and crevice attack still depend on chromium level, surface finish, deposits and drainage — do not treat 430 as marine or chloride-primary service material.
- Against 201, corrosion ranking still depends on the actual humidity, salt and cleaning chemistry; against 304, annealed 430 is usually chosen for magnetic decorative indoor duty rather than as a corrosion upgrade. Validate fabrication and environment rather than relying on the grade name alone.
Fabrication & Heat Treatment
| Welding | Control heat input, interpass temperature and joint design to limit grain growth and loss of toughness in the HAZ. Thin decorative sheet may be spot- or TIG-welded after trials; do not treat this page as a fabricated WPS — qualify the procedure for the ordered gauge and duty. |
|---|---|
| Forming | Annealed sheet and coil form adequately for bends and moderate stampings, but ductility and stretch formability are lower than common austenitic grades such as 304 or 201. Prove bend radius, draw severity and springback on the actual gauge. |
| Machining | Machining is generally straightforward with rigid tooling; avoid smearing, overheating and iron contamination of finished decorative surfaces that will remain visible in BA or 2B. |
| Heat treatment | Ferritic 430 is not hardened by conventional quench-and-temper treatment. Annealing can restore ductility after cold work, but temperature and cooling must follow the product specification — do not invent contractual heat-treat cycles here. |
Equivalent Grades
The closest international equivalents of 430 Stainless Steel are 1.4016 (X6Cr17) in the EN system, SUS430 in the JIS system, 10Cr17 in the GB system.
These are common corresponding designations, not unconditional substitutes. Verify chemistry, mechanical properties, product standard, delivery condition, dimensions and project approval before changing designation.
| System | Designation |
|---|---|
| UNS | S43000 |
| EN | 1.4016 (X6Cr17) |
| JIS | SUS430 |
| GB | 10Cr17 |
Ordering Checks for 430
- State UNS S43000 or EN 1.4016 (X6Cr17), product form (sheet/coil/strip), ASTM A240 or governing edition, thickness, width, edge and annealed condition.
- Define indoor vs outdoor exposure, humidity, chlorides, cleaning chemicals, drainage and whether magnetism is required or merely acceptable before proposing 430 versus 201 or 304.
- Specify finish (BA, 2B, No.4, etc.), critical face, protective film, grain direction and any gloss or sample criteria for visible appliance or trim parts.
- Name the inspection document (typically heat-linked MTC / EN 10204 3.1), destination port, packing method and PMI hold points when mixed ferritic/austenitic lots are a receiving risk.
Reference Product Forms & Dimensional Ranges
Common reference product forms for 430 stainless steel: Sheet / Plate, Coil / Strip.
| Finishes | 2B, BA, No.4, hairline (decorative BA/2B common for appliance faces) |
|---|---|
| Sheet / coil thickness | 0.2–3.0 mm typical strip-mill window — confirm ordered gauge |
| Slit strip width | as narrow as ~20 mm when the mill route supports it |
| Forms emphasis | Sheet and coil/strip are the primary commercial forms for this grade page |
Common surface and delivery options
- No.1, 2B, BA or mechanically polished finish when supported by the product route
- BA and 2B are the common decorative faces for appliance panels and indoor trim
- Protective film, critical face, grain direction and agreed surface sample for visible parts
These published ranges are engineering references, not a live-stock or production-capability promise. Send the required product form, dimensions, condition and finish; we quote the matching supply route.
Browse related product hubs:Sheet & plate,Coil & strip,Pipe & tube,Bar & rod.
Typical Applications
- Appliance panels, skins and housings (magnetic decorative faces)
- Kitchen counters, backsplashes and range hoods for indoor duty
- Indoor architectural and automotive trim
- Light-gauge stamped or roll-formed decorative components after forming review
430 Products We Export
430 Compared With Other Grades
Related buyer guides:
Frequently Asked Questions
What do EN 1.4016 and UNS S43000 mean for 430 stainless steel?
UNS S43000 is the ASTM designation for Type 430; EN 1.4016 (X6Cr17) is the common European alias. Buyers searching “430 / 1.4016 / S43000” are typically naming the same ~17% Cr ferritic family — but the product standard, finish, thickness and inspection document still control acceptance. Write both the UNS or EN designation and ASTM A240 (or the governing edition) on the RFQ, and verify heat chemistry on the MTC (or by PMI) before releasing mixed decorative lots.
What are 430 stainless steel properties for sheet and coil?
For annealed flat product summarized under ASTM A240/A240M, Type 430 (UNS S43000 / EN 1.4016) typically lists minimum tensile ≥450 MPa (65 ksi), 0.2% yield ≥205 MPa (30 ksi) and elongation ≥22%, with hardness capped around ≤183 HBW. The grade is ferritic and strongly magnetic. These are room-temperature engineering minima for the annealed condition — product form, thickness and finish route can change the requirement. Confirm chemistry, tensile results and the contracted edition on the MTC before approval.
Is 430 grade stainless steel magnetic?
Yes — 430 is a ferritic chromium stainless, so it is strongly magnetic in the usual annealed sheet and coil condition. Magnets commonly stick to appliance fronts supplied in 430 BA. Magnetism alone does not prove grade identity or corrosion performance; verify the heat chemistry and designation on the inspection document.
430 vs 304 and 430 vs 201 — when is 430 the better RFQ choice?
Choose 430 when the duty is dry indoor or only mildly corrosive decorative/appliance sheet, a magnetic substrate is acceptable, and avoiding deliberate nickel alloying matters for cost stability versus 304. Against 201, 430 stays ferritic and magnetic with generally lower formability and different weld HAZ risks, while 201 behaves more like a chromium-manganese austenitic until cold worked. Neither 430 nor 201 replaces 304 for outdoor wetting, marine/chloride-primary exposure or frequent aggressive cleaning.
Published by Tsingshan (Shandong) Iron & Steel Co., Ltd..Sources, update policy and technical limitations.
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