GRADE GUIDE · 409
409 stainless steel off-cuts
409 is the entry-level ferritic stainless: about 11% chromium, titanium-stabilised, magnetic, and the cheapest way to get stainless heat and oxidation resistance. Its home ground is automotive exhausts, heat shields, silencers and dry high-temperature sheet work.
Also listed as: UNS S40900 · EN 1.4512 · X2CrTi12 · SUH 409
Live 409 stock
Illustrative render409 · Plate
Stainless steel · cut_piece
2 × 1219 × 2438 mm · 45.77 kg
Excess Project Material
Dubai · Origin No · 2 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
2 × 1219 × 3000 mm · 56.32 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
2 × 1219 × 2438 mm · 45.77 kg
Excess Project Material
Dubai · Origin No · 10 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
2 × 1500 × 2440 mm · 56.36 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
5 × 1219 × 2438 mm · 114.42 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
5 × 1250 × 2240 mm · 107.8 kg
Excess Project Material
Dubai · Origin No · 5 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
5 × 1220 × 3000 mm · 140.91 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
5 × 3000 × 4000 mm · 462 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
5 × 1500 × 3000 mm · 173.25 kg
Excess Project Material
Dubai · Origin No · 4 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
6 × 1400 × 4550 mm · 294.29 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
6 × 1250 × 4400 mm · 254.1 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
6 × 1250 × 5000 mm · 288.75 kg
Excess Project Material
Dubai · Origin No · 2 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
6 × 1250 × 2500 mm · 144.38 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
8 × 1500 × 3000 mm · 277.2 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
8 × 1250 × 2500 mm · 192.5 kg
Excess Project Material
Dubai · Origin No · 9 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
8 × 1500 × 6000 mm · 554.4 kg
Excess Project Material
Dubai · Origin No · 3 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
10 × 1256 × 2510 mm · 242.75 kg
Excess Project Material
Dubai · Origin No · 5 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
10 × 1530 × 3000 mm · 353.43 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
10 × 1260 × 2140 mm · 207.62 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
409 · Plate
Stainless steel · cut_piece
12 × 1260 × 2510 mm · 292.22 kg
Excess Project Material
Dubai · Origin No · 7 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
12 × 1250 × 2500 mm · 288.75 kg
Excess Project Material
Dubai · Origin No · 3 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
20 × 1250 × 1710 mm · 329.18 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
20 × 1280 × 2510 mm · 494.77 kg
Excess Project Material
Dubai · Origin No · 3 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Illustrative render409 · Plate
Stainless steel · cut_piece
30 × 620 × 800 mm · 114.58 kg
Excess Project Material
Dubai · Origin No · 1 pcs · Listed 14 Aug 2026
Price on requestAsk us on WhatsApp
Subject to Prior Sale and Final Availability Confirmation.
409 exists because mild steel burns out of exhaust systems and 304 is overkill for them. With just enough chromium to form a protective scale and titanium stabilisation for weldability, it survives hot exhaust gas for years at a fraction of austenitic cost. It is magnetic, drabber in finish than 304, and perfectly happy that way — this is a working grade, not a decorative one.
Its limits are wet corrosion and appearance: it will show surface rust in humid coastal air, which is cosmetic on an exhaust but disqualifying on architecture. For visible or wet work, spend up to 304; for hot, dry, hidden parts, 409 off-cuts are the economical buy.
Common questions
Why does my 409 part show light rust?
That is normal for the grade — 11% chromium slows corrosion but does not stop surface staining in humid or salty air. It remains structurally sound; if staining is unacceptable, the job wanted 304 or 316.
Is 409 weldable?
Yes — the titanium stabilisation makes it one of the friendlier ferritics to weld. Thin-gauge TIG and MIG work is routine; use a 409Nb or austenitic filler.
Where does 409 beat aluminised mild steel?
Life. Both are exhaust materials, but 409 outlasts aluminised steel severalfold once the coating scratches or ages — which is why OEM exhausts moved to it.