What material is X2CrNiMo17-12-2 Steel Rod?
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What material is X2CrNiMo17-12-2?
X2CrNiMo17-12-2 (Material No.: 1.4404) is a low-carbon austenitic stainless steel conforming to European Standards (EN). Commonly referred to as 316L stainless steel, it is alloyed with molybdenum (Mo), which imparts excellent corrosion resistance-particularly against pitting-as well as superior weldability. It is widely utilized in applications such as storage tanks, heat exchangers, pumps and valves, pharmaceutical equipment, marine fittings, and chemical pipelines.
What is X2CrNiMo17-12-2 equivalent?
X2CrNiMo17-12-2 (EN 1.4404) is a low-carbon, acid-resistant austenitic stainless steel, equivalent to AISI 316L (UNS S31603). Its primary equivalent grades and relevant standards include 1.4404 (EN), 316S12 (BS), Z2CND17-13 (AFNOR), SUS316L (JIS), and SS2348 (SIS).
| Region/Country | China | Taiwan(China) | Japan | Korea | USA | ISO | Germany | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Standard | GB | ISC | CNS | JIS | KS | ASTM | UNS | ISO | Material No. | DIN EN/DIN | W-Nr. |
| Grade | 022Cr17Ni12Mo2 (00Cr17Ni14Mo2) | S31603 | 316L | SUS 316L | STS 316L |
X2CrNiMo17-12-2 Stainless Steel Chemical Composition
| Element | Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Chromium (Cr) | Nickel (Ni) | Copper (Cu) | Molybdenum (Mo) | Nitrogen (N) |
|---|---|---|---|---|---|---|---|---|---|---|
| Min (%) | - | - | - | - | - | 16.5 | 10 | - | 2 | - |
| Max (%) | 0.03 | 1.00 | 2.00 | 0.045 | 0.03 | 18.5 | 13.0 | 1.00 | 2.50 |
0.10 |
X2CrNiMo17-12-2 mechanical properties
| Condition | Heat Treatment Condition | Tensile Strength σb / MPa | Reduction of Area ψ / % |
|---|---|---|---|
| Rod/Wire; 2<d≤5 | Solution Annealed + Cold Drawn + Solution Annealed (+AT+C+AT) | ≤670 | ≥68 |
| Wire; 2<d≤5 | Solution Annealed + Cold Drawn + Solution Annealed + Light Cold Working (+AT+C+AT+LC) | ≤720 | ≥63 |
| Bar/Rod/Wire; 5<d≤10 | Solution Annealed (+AT) or Solution Annealed + Peeled (+AT+PE) | ≤650 | ≥68 |
| Rod/Wire; 5<d≤10 | Solution Annealed + Cold Drawn (+AT+C) | ≤780 | - |
| Rod/Wire; 5<d≤10 | Solution Annealed + Cold Drawn + Solution Annealed (+AT+C+AT) | ≤650 | ≥68 |
| Rod/Wire; 5<d≤10 | Solution Annealed + Cold Drawn + Solution Annealed + Light Cold Working (+AT+C+AT+LC) | ≤720 | ≥63 |
| Bar/Rod/Wire; 10<d≤25 | Solution Annealed (+AT) or Solution Annealed + Peeled (+AT+PE) | ≤650 | ≥68 |
| Rod/Wire; 10<d≤25 | Solution Annealed + Cold Drawn (+AT+C) | ≤750 | - |
| Rod/Wire; 10<d≤25 | Solution Annealed + Cold Drawn + Solution Annealed (+AT+C+AT) | ≤650 | ≥68 |
| Bar/Rod/Wire; 25<d≤50 | Solution Annealed (+AT) or Solution Annealed + Peeled (+AT+PE) | ≤650 | ≥68 |
Applications of X2CrNiMo17-12-2 Material
This material is utilized in a wide range of industrial and domestic applications; some examples include:
Piping and vessels in the oil and gas industry
Equipment in the food industry
Equipment in wastewater treatment plants
Equipment in the chemical and pharmaceutical industries
Surgical retractors and medical implants
Heat exchanger tubes
Water supply piping and plumbing systems
X2CrNiMo17-12-2 Stainless Steel: Heat Treatment
The standard heat treatment regimen for X2CrNiMo17-12-2 involves solution annealing. The specific process entails heating the material to a temperature range of 1010–1150°C, followed by rapid cooling (either water quenching or air cooling) after a suitable holding period.
1.4404 Stainless Steel: Corrosion Resistance
Even after brief exposure within the sensitization temperature range (450–850°C), its resistance to intergranular corrosion remains far superior to that of standard 316 stainless steel, making it highly suitable for the fabrication of thick-section welded components.
1.4404 Stainless Steel: Fabricability
Cold Working: Excellent. Due to its stable austenitic structure and high ductility, it is ideally suited for cold-forming operations such as deep drawing, bending, and flanging; however, it exhibits a tendency toward work hardening, and intermediate annealing may be required following severe deformation.
Hot Working: Good. The recommended hot-working temperature range is 1150–900°C; prolonged holding within the 700–900°C range should be avoided to prevent the precipitation of deleterious phases.
1.4404 Stainless Steel: Weldability:
Excellent. It is compatible with all conventional welding methods, including Shielded Metal Arc Welding (SMAW), Gas Tungsten Arc Welding (TIG), and Gas Metal Arc Welding (MIG/MAG). Post-weld heat treatment is not required. To ensure optimal corrosion resistance in the weld zone, the use of matching low-carbon filler materials (e.g., ER316L) is recommended.
GNEE supplies X2CrNiMo17-12-2 in all forms, including plates/strips/coils, bars/wire rods, and tubes.
Hot-Rolled Medium-to-Heavy Plates: Thickness typically ranges from 4.0 mm to over 200 mm, with widths reaching up to 2400 mm.
Coils: Thickness ranges from 0.3 mm to 3.0 mm; supplied in coiled form to facilitate continuous stamping operations.
Round Bars: Diameter ranges from precision fine bars of φ1 mm to large forged bars of φ700 mm.
Wire Rods/Wires: Diameter ranges from 0.1 mm to 13.0 mm; supplied in coils or straight lengths for the manufacture of welding wire, woven mesh, fasteners, and similar products.
Seamless Tubes: Outer diameters range from 6 mm to 630 mm, with wall thicknesses of 1 mm to 50 mm.
Welded Tubes: Available in a wide variety of specifications and can be customized according to specific requirements.
Delivery Condition: Typically supplied in a solution-annealed (+AT) and pickled condition to ensure optimal corrosion resistance and machinability.
Warranty Commitment: "Every sheet we supply comes with a complete EN 10204 3.1 certificate, allowing you to clearly view the actual measured values for chromium, nickel, and molybdenum, thereby ensuring full compliance with European standards."
