EN 1.4404 vs. EN 1.4409: key differences
May 06, 2025
Leave a message
EN 1.4404 Stainless Steel vs. EN 1.4409: What Are the Differences?
When comparing EN 1.4404 and EN 1.4409 stainless steels, it's important to understand the subtle differences in their chemical composition, mechanical properties, and typical applications. Both grades belong to the 316 family of stainless steels, commonly used in environments that require excellent corrosion resistance, particularly in chloride-rich environments like marine and chemical industries. However, there are key distinctions that make each grade more suitable for specific applications.
What material is 1.4404 equivalent to ASTM?
1.4404 (also known as AISI 316L) is a low-carbon, acid-resistant austenitic stainless steel (X2CrNiMo17-12-2) with superior corrosion resistance, particularly against chlorides and acids. It features 17% Cr, 12% Ni, and 2% Mo, making it ideal for chemical, pharmaceutical, food, and maritime industries due to its excellent weldability and high strength at elevated temperatures.
What is 1.4409 material?
1.4409 (GX2CrNiMo19-11-2) is an European EN-standard austenitic stainless steel casting material designed for high corrosion resistance, often used as the cast equivalent to wrought 316L (EN 1.4404) stainless steel. It offers superior corrosion resistance in acidic and chloride environments, commonly applied in pumps, valves, and chemical industry equipment.
EN 1.4404 vs. EN 1.4409: key differences
EN 1.4404 (316L) and EN 1.4409 (CF3M) are both low-carbon, corrosion-resistant, austenitic stainless steels, but they differ primarily in production method: 1.4404 is a wrought alloy (forged, rolled) used for sheets, pipes, and tubes, while 1.4409 is a cast stainless steel used for complex shapes like valves, fittings, and pump housings.
| Feature | EN 1.4404 (316L) | EN 1.4409 (CF3M Cast 316L) |
|---|---|---|
| Product Form | Wrought (rolled, forged, welded) | Cast (valves, pumps, fittings) |
| Manufacturing Method | Rolled plate, sheet, tube, bar | Investment or sand casting |
| Standard Name | X2CrNiMo17-12-2 | GX5CrNiMo19-11-2 |
| UNS Equivalent | S31603 | S31600 (cast version of 316L) |
| Key Application | Welded structures, tanks, piping | Cast components with complex geometry |
EN 1.4404 vs EN 1.4409 Stainless Steel：Chemical Composition
| Element | EN 1.4404 (% by weight) | EN 1.4409 (% by weight) |
|---|---|---|
| Carbon (C) | ≤ 0.03 | ≤ 0.08 |
| Chromium (Cr) | 16.5 – 18.5 | 18.0 – 20.0 |
| Nickel (Ni) | 10.0 – 13.0 | 11.0 – 14.0 |
| Molybdenum (Mo) | 2.0 – 2.5 | 2.0 – 3.0 |
EN 1.4404 vs EN 1.4409 Stainless Steel：Mechanical Properties
| Property | EN 1.4404 (Wrought) | EN 1.4409 (Cast) |
|---|---|---|
| Tensile Strength | 500–700 MPa | 480–670 MPa |
| Yield Strength | ≥ 190 MPa | ≥ 200 MPa |
| Elongation (%) | ≥ 40% | ≥ 30% |
| Hardness (HB) | ≤ 215 | ≤ 230 |
EN 1.4404 vs. EN 1.4409: Corrosion Resistance
EN 1.4404 (316L) and EN 1.4409 are both highly corrosion-resistant austenitic stainless steels with similar compositions (content of the same element > 98%). 1.4404 is a forged steel, making it very suitable for welding; while 1.4409 is a cast steel with slightly higher chromium and nickel content. Due to its higher molybdenum and nickel content, it generally exhibits superior corrosion resistance in harsh environments.
EN 1.4404 vs. EN 1.4409: Applications
EN 1.4404 (316L) and EN 1.4409 (GX2CrNiMo19-11-2) are highly corrosion-resistant molybdenum-alloyed austenitic steels, primarily differentiated by manufacturing method: 1.4404 is for wrought products (plates, pipes) and 1.4409 is for castings. Both are used in chemical, marine, and food industries, with 1.4409 often used for cast valves and pump components.
If you have any project requirements for 316L 1.4404 stainless steel, please feel free to place an order. GNEE has a large inventory of popular products for you to choose from. It can be processed into various practical product forms, including plates, coils, pipes, bars, and wires. For detailed chemical composition and free samples, please contact our factory immediately. We offer competitive prices and excellent service.
Send Inquiry