Titanium Stabilized Ferritic Grade · Superior Corrosion & Oxidation Resistance · Excellent Weldability · Global Supply
HRS Ferritic has been a leader in the stainless industry for over 30 years. We are a trusted SS 439 Plate Supplier, AISI 439 Plate Importer, and Stainless Steel 439 Plate Stockist. Our products are sourced from certified, valuable manufacturers and comply with ASTM. We offer high-quality materials at competitive prices.
SS 439 is a ferritic stainless steel stabilized with titanium to prevent carbide precipitation. It can be used for welding applications and for extended exposure to high temperatures, offering superior performance over standard SS 430.
Each element in SS 439 plays a precise role in delivering exceptional durability and thermal performance.
ASTM A240 · AISI 439 · UNS S43900
| Specification | Details |
|---|---|
| ASTM / AISI | ASTM A240 / AISI 439 (Plate, Sheet, and Strip) |
| UNS | S43900 |
| EN / DIN | EN 1.4512 / DIN 1.4512 |
| ISO | X2CrTi12 |
| JIS | SUS 439 |
| Product Form | Sheets / Plates |
| Thickness Range | 0.5 mm to 100 mm |
| Standard Widths | 1000, 1219, 1250, 1500, 1800, 2000, 2500, 3000, 3500 mm |
| Standard Lengths | 2000, 2440, 2500, 3000, 5800, 6000 mm |
| 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.
Precision sheets in hot rolled, cold rolled and annealed & pickled conditions.
Precision-rolled coils and strips for specialized forming operations.
Cut-to-size blanks, circles, rings and chequered plates per requirement.
17.0–19.0% — Core element for corrosion and oxidation resistance.
≤ 0.75% — Stabilizes carbon/nitrogen, prevents carbide formation.
≤ 0.03% — Ultra-low level ensures weldability and ductility.
Balance — Magnetic behaviour and stable mechanical foundation.
430–550 MPa — Exceptional for demanding structural applications.
≥ 275 MPa — Consistent properties for forming operations.
22–30% — Excellent ductility for cold-forming.
≤ 180 HB — Consistent machinability and surface quality.
Choose from a wide range of finishes based on your application and precision requirements.
Titanium stabilization in SS 439 prevents carbide precipitation, improving corrosion resistance and weld quality at elevated temperatures.
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 17.0 – 19.0 |
| Carbon (C) | ≤ 0.03 |
| Titanium (Ti) | ≤ 0.75 |
| Manganese (Mn) | ≤ 1.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.030 |
| Iron (Fe) | Balance |
SS 439 is recognized across all major global standards with equivalent metallurgical designations.
| Standard / Country | Equivalent Grade / Designation |
|---|---|
| AISI (USA) | 439 |
| UNS (USA) | S43900 |
| ASTM | A240 Type 439 / A276 Type 439 |
| EN (Europe) | 1.4512 |
| DIN (Germany) | X2CrTi12 |
| BS (UK) | 439S17 |
| JIS (Japan) | SUS 439 |
| ISO | X2CrTi12 |
| AFNOR (France) | Z10CN19-11 |
| GOST (Russia) | 08Х17Т |
| UNI (Italy) | X2CrTi12 |
| SS (Sweden) | 2333 |
| KS (Korea) | STS 439 |
| IS (India) | 439 |
HRS Ferritic has a commitment to deliver high-quality ferritic products to industries around the world. We are a reliable SS 439 Plate Importer & Stockist. We ensure quality, performance and value with every supply. Trusted by industries worldwide for authentic, tested SS 439 plates conforming to the highest engineering standards.
Quick answers to common queries about Stainless Steel 439 Plate.