Ferritic Stainless Steel Grades Compared: 409M vs 430 vs 441
Put simply: 409M is the leanest and cheapest of the three, a structural ferritic grade meant for bus bodies, wagons and mild exhaust work, sitting at the low end of chromium content. 430 falls in the middle, a general-purpose ferritic with roughly 17% chromium, picked for appliance and kitchen trim as well as decorative work. 441 is different: stabilised with both titanium and niobium, it carries around 18% chromium and is built for heat and automotive exhaust duty. None of the three contains nickel. They're all magnetic, and none can be hardened, so cost, corrosion resistance and heat tolerance are what really separate them.
Relinox holds an authorized MoU partnership with Jindal Stainless Limited (JSL) for stainless flat products, not Jindal SAW, not JSW Steel, not JSPL, and not SAIL Salem. Every grade listed on this page is genuine JSL-melted ferritic flat product, backed by a mill test certificate. None of it is re-rolled bazaar stock.
Written by the Relinox Technical Team, Jindal Stainless's MoU partner, headquartered at Ajmeri Gate, one of Delhi's leading stainless steel markets.
What is ferritic stainless steel?
What is ferritic stainless steel? It's the straight-chromium family of stainless steel, high in chromium, with little or no nickel, that keeps the body-centred-cubic iron structure. That's why it's magnetic and why heat treatment won't harden it. Because there's no expensive nickel to buy, ferritics come cheaper and hold their price better than austenitic 304/316. The catch: lower corrosion resistance, and less formability.
Stainless steel breaks down into four families. Austenitic grades (304/316) carry nickel, aren't magnetic, and offer the best resistance to corrosion. Ferritic grades (409M/430/441) skip the nickel, stay magnetic, and cost less. Martensitic grades (410/420) can be hardened, so they end up in blades and wear parts. Duplex (2205) brings high strength to the mix.
Ferritics belong to the 400 series stainless steel grades, sitting alongside the martensitics. That's the reason people also call them straight chromium stainless steel. When buyers ask about "utility ferritic grades india," the grades that come up most are 409/409M, 430, 439, 441 and 436.
The utility ferritic grades at a glance
The full ferritic stainless steel grades list on Jindal's flat products runs to five utility grades. This guide narrows that down to the three most requested: 409M, part of the 409 series, along with 430 and 441. Each grade gets its own page, covering HR and CR forms.
| Grade | Nearest designation (AISI/UNS/EN/IS) | ~Cr% | Stabilisation | Signature use | Grade page |
|---|---|---|---|---|---|
| 409 / 409M | AISI 409 · UNS S40900 (409M = Mn-bearing modified) | ~10.5–11.7 | Ti (±Nb), Mn-bearing | Bus body, wagon, mild exhaust | 409/409M grade, full spec & forms |
| 430 | AISI 430 · UNS S43000 · EN 1.4016 · IS X04Cr17 | ~16.0–18.0 | None (basic 17Cr) | Appliance / kitchen trim, decorative | SS 430, 17% chrome ferritic details |
| 439 | AISI 439 · UNS S43035 · EN 1.4510 | ~17.0–19.0 | Ti-stabilised | Tanks, tube, general indoor fabrication | 439/441/436 stabilised ferritics |
| 441 | AISI 441 · UNS S44100 · EN 1.4509 | ~17.5–18.5 | Ti + Nb dual-stabilised | Automotive exhaust, hot-end | 439/441/436 stabilised ferritics |
| 436 | AISI 436 · UNS S43600 · EN 1.4526 | ~16.0–18.0 | Nb (Mo-bearing) | Exhaust, trim needing extra corrosion margin | 439/441/436 stabilised ferritics |
Chromium ranges follow the limits published in ASTM A240, mirrored by IS 6911. 409M is Jindal's Mn-bearing modification of the 409 family, so its exact chemistry follows JSL's published data; confirm the melt analysis on the mill test certificate. Two near-neighbour questions come up constantly: 409 vs 409m and 430 vs 439. Both get covered in depth on the grade pages (409/409M and 439/441/436); this isn't the place for it.
409M vs 430 vs 441: the decision table
This is the core head-to-head. Read the 409m vs 430 rows for the economy-versus-corrosion trade, the 430 vs 441 rows for general-purpose versus high-temperature, and the extremes across 409m vs 441 for the widest gap in chromium and heat tolerance.
| Attribute | 409M | 430 | 441 |
|---|---|---|---|
| Chromium (Cr) | ~10.5–11.7% | ~16.0–18.0% | ~17.5–18.5% |
| Nickel (Ni) | Nil–trace (nickel-free) | Nil–trace (nickel-free) | Nil–trace (nickel-free) |
| Stabilisation | Ti (±Nb), Mn-bearing | None (basic 17Cr) | Ti + Nb dual-stabilised |
| Magnetic | Yes (ferromagnetic) | Yes | Yes |
| Heat-treat hardenable | No | No | No |
| Corrosion resistance (relative) | Low–moderate (mild / atmospheric) | Moderate (dry indoor / appliance) | Moderate–good; best oxidation |
| Max service / heat suitability | Mild / atmospheric only | ~815 °C max oxidation (per published data) | Highest of the three, exhaust / hot-end oxidation service |
| Tensile strength (min, sheet) | ~380 MPa | ~450 MPa | ~430 MPa class |
| Yield strength, 0.2% (min) | ~205 MPa | ~205 MPa | ~205 MPa |
| Density (approx.) | ~7.7 g/cm³ | ~7.7 g/cm³ | ~7.7 g/cm³ |
| Typical finishes | 2B, No.1/HR, 2D | 2B, BA, No.4, 2D | 2B, No.1/HR |
| Best applications | Bus body, wagon, automotive structural, mild exhaust | Appliance trim, kitchen equipment, utensil backs, decorative | Automotive exhaust, hot-end, muffler |
| Relative cost band | Lowest | Mid | Higher (of the three) |
Mechanical and chemical values follow the standard specification limits under ASTM A240 / IS 6911, and the 409M-specific figures come from JSL published data. The mill test certificate confirms the actual heat. Cost bands are relative only. As for the ₹/kg rate, that's on the dated indicative price list; no numbers appear here.
409M: economical structural ferritic
409M sits at the bottom of the chromium range among the three, and it's the most economical. It's a Ti/Mn-bearing modified 409 built for structural and automotive use, not corrosion service. This is the best stainless for bus body work, bus bodies, railway wagons, automotive structural sections, and it also suits mild, cooler-running exhaust applications. Corrosion resistance here is the weakest of the three, so keep it away from wet conditions, chloride exposure or decorative-finish jobs.
Deep-dive: 409/409M grade page, bus body & transport and automotive & railway.
430: the general-purpose 17% chrome ferritic
430 is the workhorse ferritic stainless, roughly 17% chromium, and it's the default choice for kitchen trim and appliances: appliance panels and trim, kitchen equipment, utensil backs, and decorative No.4 or BA finishes. Its corrosion resistance beats 409M by a clear margin for dry indoor use, but it won't hold up to chloride, marine, or wet food-processing exposure. That job belongs to 304/316L. For more, check: SS 430 grade page, kitchen equipment and utensils & kitchenware.
441: dual-stabilised high-temperature ferritic
441 is Ti+Nb dual-stabilised, and that combination gives it the best high-temperature strength, oxidation resistance and weldability of the three. It's the best ferritic stainless for exhaust work, automotive exhaust systems, hot-ends, mufflers, anywhere 409M would oxidise and 430 would scale. Available in both HR and CR forms. For more detail, see the 439/441/436 grade page and automotive & railway.
Ferritic vs austenitic stainless (and vs martensitic)
Buyers weigh the ferritic versus austenitic stainless split more than almost anything else. Ferritics are nickel-free, magnetic and cheaper. Austenitic 304/316, by contrast, carry 8–10% nickel, and that nickel buys non-magnetic behavior, far stronger corrosion resistance and deep-draw formability, all at a higher price tied to the LME. Pay the austenitic premium when the part will sit wet, outdoors, in food contact or under deep forming. Stay with ferritic when the load is dry, indoor or purely structural.
The ferritic versus martensitic stainless question comes down to hardenability. Martensitic 410/420 can be heat-treated hard, which suits blades and wear parts. Ferritics can't be hardened at all.
| Property | Ferritic (409M / 430 / 441) | Austenitic (304 / 316) | Martensitic (410 / 420) |
|---|---|---|---|
| Structure | Body-centred cubic | Face-centred cubic | Body-centred tetragonal (hardened) |
| Nickel | Nil–trace | 8–10%+ | Nil–low |
| Magnetic | Yes | Essentially non-magnetic (annealed) | Yes |
| Heat-treat hardenable | No | No | Yes |
| Corrosion resistance | Low–moderate | High | Low–moderate |
| Formability | Limited deep-draw | Excellent | Poor |
| Relative cost | Lower, price-stable | Higher, nickel/LME-linked | Moderate |
For the single most-asked family match-up, is austenitic worth the premium over a ferritic, see 304 vs 430, is austenitic worth the premium?. Martensitic contrast: SS 410 and SS 420.
Nickel-free & magnetic: what that means for buyers
Ferritics are the headline nickel free stainless steel grades: 409M, 430 and 441 carry only residual nickel. That's exactly why they cost less and hold their price better than nickel-bearing austenitics do. For buyers comparing nickel free stainless steel india options, that price stability is the main commercial draw. A ferritic rate doesn't swing with the LME nickel market the way 304 does.
Two cautions are worth flagging. First, on magnetic stainless steel grades: every ferritic grade is ferromagnetic, so a magnet grabs hold strongly. That said, magnetism alone doesn't tell you much about quality. Even austenitic 304 picks up a mild magnetic pull once it's been heavily cold-worked. So is 430 stainless magnetic? Yes, quite strongly. Still, check the grade on the mill test certificate rather than trusting a fridge magnet.
Second come the low nickel stainless steel grades that people tend to lump in here: the 200-series (201, 202, 204Cu, J4). These are actually low-nickel austenitic grades, not ferritic. They carry some nickel along with manganese and nitrogen, and they're non-hardenable austenitics. If that's what you're really after, see SS 201 and SS 202.
A quick note on chrome steel vs stainless: in the market, "chrome steel" usually just refers to these straight-chromium ferritics. They are stainless, the chromium forms the passive film, not some separate, lower-grade material.
Corrosion, heat & where each grade fails
Does ferritic stainless steel rust? Honestly, it can if you put it in the wrong job. Ferritics hold up fine against mild atmospheric exposure and dry indoor corrosion, but none of the three grades belongs anywhere near chloride, marine, coastal, or wet food-processing environments. For that kind of service, reach for austenitic 304 or 316L instead of a ferritic. Among the three grades, corrosion resistance ranks 441 ≥ 430 > 409M, and resistance to high-temperature oxidation ranks 441 > 430 > 409M. So 409M suits dry structural work, 430 handles dry indoor and decorative jobs, and 441 takes on the situations where heat and oxidation are the real threat. Match the grade to the environment and a ferritic will hold up for years. Stick it somewhere wet, though, and it'll stain.
Which ferritic grade should you choose?
Pick by the job, not by habit:
- Choose 409M to save cost on dry structural and automotive work, bus bodies, wagons, mild exhaust.
- Choose 430 for dry indoor work: appliances, kitchen trim, decorative pieces, anything where you want a bright finish without paying a premium.
- Choose 441 where heat and oxidation dominate, automotive exhaust and hot-end parts.
- Step up to 304/316 the moment the part sees chlorides, moisture, food contact or deep forming.
| Application | Recommended grade | Why | Link |
|---|---|---|---|
| Bus body & transport | 409M | Economical structural ferritic | Bus body & transport |
| Automotive exhaust / hot-end | 441 | Dual-stabilised for heat & oxidation | Automotive & railway |
| Appliance & kitchen trim | 430 | 17% Cr, bright finish, dry indoor | Kitchen equipment |
| Decorative No.4 / BA panels | 430 | Takes decorative finishing well | Utensils & kitchenware |
| General indoor fabrication | 430 / 439 | Stabilised for weld-heavy indoor work | Fabrication & engineering |
Pricing: ferritic stainless rate per kg
We don't quote a fixed number here. It shifts every day. For any ferritic stainless steel price india enquiry, whether it's a 430 stainless sheet price per kg, a 409m sheet price, or a 441 stainless price, check the dated ferritic stainless steel price list today, then send your size and quantity through the RFQ form to pin down today's rate. Grade-page pricing lives inside SS 430, 409/409M and 439/441/436.
Buy genuine Jindal ferritic stainless from Relinox
Relinox Stainless holds official status as a Jindal Stainless MoU partner, meaning we're an authorized channel for genuine JSL-melted material rather than re-rolled bazaar stock. We work as a ferritic stainless steel dealer in India, covering the full grade range from 409/409M through 430, 439, 441 and 436, all available as verified Jindal ferritic stainless sheet. That includes standing roles as a 430 stainless steel stockist and supplier, a 409M stainless steel trader and distributor, and a 441 ferritic stainless supplier for buyers across the country. Anyone searching for a ferritic stainless steel dealer in Delhi can walk straight into our Ajmeri Gate stock point. Everyone else, we serve pan-India.
Place orders for ferritic stainless 8x4 sheet and coil, stainless steel coils, jindal 430 patta / patti strip, and circles. All of it comes from genuine Jindal base material, and cut-to-size is available. Every dispatch carries a mill test certificate (MTC), confirming conformance to ASTM A240 and IS 6911, as produced by Jindal Stainless.
Relinox Stainless is a distributor and stockist, never a steel manufacturer, based at 699, 1st Floor, Gali Kundewalan, Ajmeri Gate, Delhi 110006 (GSTIN 07AAYFR6664H1ZD), one of Delhi's main stainless steel markets, with pan-India dispatch. Send your ferritic-grade requirement via the RFQ form for today's indicative rate with MTC, or open a dealer pricing enquiry if you resell. More: Jindal Stainless MoU partnership and quality & mill test certificates.
Related guides & resources
- 304 vs 430, is austenitic worth the premium?, the family match-up in full.
For grade specifics, check 409/409M, SS 430, and 439/441/436; the martensitic grades 410 and 420 sit in a separate group.
On the austenitic front, SS 304 and SS 316 remain the usual references, with low-nickel SS 201 and SS 202 as alternatives.
Two standards anchor all of this: ASTM A240 and IS 6911. For a broader view, browse all stainless grades or all guides.
Need numbers instead of names? The sheet weight calculator and the SS sheet weight chart handle that.
Frequently asked questions
What are the main ferritic stainless steel grades?
The utility ferritics run across five grades: 409/409M, 430, 439, 441 and 436. Of these, 409M, 430 and 441 see the most use. Nickel is essentially absent from all of them, and none will harden or lose its magnetic pull. What separates one from another comes down to chromium content, stabilisation, how well each resists corrosion, and how much heat it can take.
What is the difference between 409M and 430?
409M is a ~11% chromium economical structural ferritic for automotive and transport work with the least corrosion resistance; 430 is a ~17% chromium general-purpose ferritic with better corrosion resistance for appliance, kitchen and decorative use.
430 vs 441, which is better?
430 is the general-purpose 17% chromium ferritic for dry indoor and decorative work; 441 is Ti+Nb dual-stabilised at ~18% chromium with better weldability and high-temperature oxidation resistance, so 441 wins for exhausts and hot-end parts.
Is 430 stainless steel magnetic?
Yes. Every ferritic grade here, 409M, 430, and 441, is ferromagnetic, so a magnet will grab hold firmly. That pull doesn't tell you much about quality on its own, though. Cold-worked 304 can pick up a mild magnetic response too, so don't rely on a magnet test alone. Check the mill test certificate to confirm the actual grade.
Which stainless steel grades have no nickel?
409M, 430, 441 and the rest of the 400-series straight-chromium grades are the ferritics. Essentially nickel-free, all of them. The 200-series (201, 202, 204Cu, J4) sits in a separate category: low-nickel austenitic, not ferritic, and it still carries a trace of nickel.
Is 409M stainless steel good?
Yes, but only for the right job. 409M is a genuine, cost-effective structural ferritic grade, well suited to bus bodies, railway wagons and mild automotive exhaust systems. It wasn't built for wet, chloride-heavy or decorative work, though; for that, 430 or an austenitic grade is the correct choice.
Does ferritic stainless steel rust?
Mild atmospheric exposure and dry indoor air won't touch it. Ferritics don't belong near chlorides, marine air, coastal sites, or wet food-processing lines, though; use 304 or 316L there instead. Stay within a ferritic's limits, and it holds up just fine.
Which ferritic grade is best for automotive exhausts?
Ti and Nb together give 441 its edge: best high-temperature strength and oxidation resistance among the utility ferritics, with 439 and 436 offering related stabilised alternatives. 409M, by contrast, only holds up in cooler, mild exhaust sections.
Which ferritic grade is used for bus bodies and railway wagons?
409M, the economical structural ferritic, ranks as the standard choice for bus bodies and railway wagons. For the complete specification approach, check our bus body and transport application page.
Can ferritic stainless be hardened by heat treatment?
No. Ferritic grades like 409M, 430 and 441 won't harden through heat treatment, unlike martensitic 410/420. Cold work is the only way to strengthen them, and even that has limits.
Are 409M, 430 and 441 available from Relinox, and do you provide an MTC?
Yes, all of these are core Jindal grades, supplied as genuine JSL flat product, and every dispatch comes with a mill test certificate. Send us your grade, size and quantity on the RFQ form, and you'll get today's indicative rate along with a copy of the MTC.
What sizes and finishes come in ferritic sheet?
India's market sticks to a handful of standard sizes: 8x4 (1250×2500 mm), 4x10 (1250×3050 mm), and 5x10 (1500×3000 mm). Thickness runs from roughly 0.3 mm up to 12 mm and beyond. Finishes vary by grade: 2B, No.1/HR, No.4, or BA. Want the exact stocked range for your grade? Check the RFQ form.