Martensitic Modified Grade · Titanium Stabilized · High Strength & Weldability · Global Supply
HRS Ferritic is one of the finest stainless steel distributors, recognized for high-performing and high-quality products. We are the leading SS 409M Plate / AISI 409M Plate Supplier and SS 409M Plate Stockist. We ensure that premium-grade plates are available from mills with certifications. We are committed to providing quality products, on-time delivery and technical support for engineering, industrial and many other industrial projects.
SS 409M plate, also known as AISI 409M plate, is a martensitic steel with increased corrosion resistance and greater strength. The "M" grade is a modification in composition that enhances mechanical performance and heat resistance. Used extensively in chemical, industrial and automotive applications due to its excellent weldability, moderate corrosion resistance and high durability. Titanium or niobium stabilizers reduce carbide precipitation during welding, improving corrosion resistance while maintaining dimensional stability.
Each element in SS 409M plays a precise role in delivering strength, weldability and corrosion durability.
ASTM A240 · ASME SA240 · UNS S409M00
| Specification | Details |
|---|---|
| ASTM / ASME | ASTM A240 / ASME SA240 (Plate, Sheet, and Strip) |
| UNS | S409M00 |
| EN / DIN | EN 1.4512 / DIN 1.4512 |
| ISO | ISO X2CrTi12 |
| JIS | SUS 409M |
| Product Form | Plates |
| Thickness Range | 0.5 mm to 100 mm |
| Standard Widths | 1000 mm, 1219 mm, 1250 mm, 1500 mm, 1800 mm, 2000 mm, 2500 mm, 3000 mm, 3500 mm, etc. |
| Standard Lengths | 2000 mm, 2440 mm, 2500 mm, 3000 mm, 5800 mm, 6000 mm, etc. |
| Surface Finish | Hot Rolled (HR), Cold Rolled (CR), Annealed & Pickled (AP) |
| Supply Condition | Solution Annealed |
| Cutting Methods | Plasma, Laser, Waterjet, Oxy Propane |
| Packaging | Bundled, Wooden Plates, Bubble Wrap, Customized |
High-quality flat plate products in various thicknesses for industrial applications.
Seamless and welded pipes for high-temperature and corrosion-resistant use.
Circles, rings, custom-cut blanks and chequered (tread) plates.
Precision-rolled coils and strips for specialized forming operations.
10.5 – 11.75% — Core element for corrosion and oxidation resistance.
0.25% min — Prevents chromium carbide formation; improves weldability.
≤ 0.12% — Kept low to ensure weldability and corrosion resistance.
Balance — Base metal providing overall structural strength.
480 – 700 MPa — Suitable for structural and mechanical applications.
275 – 350 MPa — Consistent properties for forming operations.
15 – 25% — Good ductility for cold-forming and fabrication.
170 – 220 HB — Ensures consistent machinability and surface quality.
We offer all variants of SS 409M plates with full certification and traceability.
Titanium stabilization in SS 409M prevents chromium carbide formation during welding, improving corrosion resistance and dimensional stability.
| Element | Percentage (%) |
|---|---|
| Carbon (C) | ≤ 0.12 |
| Chromium (Cr) | 10.5 – 11.75 |
| Manganese (Mn) | ≤ 1.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.04 |
| Sulfur (S) | ≤ 0.03 |
| Titanium (Ti) | 0.25 min |
SS 409M is recognized across all major global standards with equivalent metallurgical designations.
| Standard | Grade / Designation |
|---|---|
| ASTM / AISI | 409M |
| ASTM (UNS) | S409M00 |
| ASTM A240 | 409M |
| ASTM A268 | 409M |
| SAE | 409M |
| EN 10088 | 1.4512 |
| EN Symbol | X2CrTi12 |
| DIN | 1.4512 |
| BS | 409S19 |
| AFNOR | Z2CT12 |
| UNI | X2CrTi12 |
| JIS | SUS 409M |
| JIS (Closest) | SUS 409L |
| IS 6911 | 409M |
| GB / T | 10CrTi |
SS 409M Plates are widely used because of their strength and resistant nature against harsh forming corrosion, providing reliable performance over a long period of time in industries requiring mechanical strength, weldability and resistance to oxidation.
HRS Ferritic provides high-performing SS 409M Plate solutions to industries around the world. Our global sourcing network and expertise allow clients to rely on uninterrupted supply and expert advice. Contact us for reliable SS 409M Plate supplies and tailored solutions for all your projects.
Quick answers to common queries about SS 409M Plate / AISI 409M Plate.