1.4550 Stainless Steel Plate & Coil: Austenitic Niobium-Tantalum Stabilized High-Temp Plate/Coil

What is 1.4550 Stainless Steel Plate & Coil?

W.Nr. 1.4550 is a niobium-tantalum stabilized austenitic stainless steel plate & coil, offering superior high-temperature stability and post-weld corrosion resistance compared to titanium-stabilized grades. It is ideal for high-end industrial scenarios requiring high-performance plates/coils.

Equivalent Grades (Horizontal)

W.Nr.: 1.4550 | UNS: S34700 | JIS: SUS347 | GB: 06Cr18Ni11Nb | EN: X6CrNiNb18-10

Chemical Composition (wt%, Horizontal)

C: ≤0.08 | Si: ≤1.00 | Mn: ≤2.00 | P: ≤0.045 | S: ≤0.030 | Cr: 17.00-19.00 | Ni: 9.00-13.00 | Nb+Ta: ≥10×C | Fe: Balance

Key Properties (20°C, Annealed, Horizontal)

Density: 7.93g/cm³ | Melting Point: 1400-1450°C | Tensile Strength: ≥515N/mm² | Yield Strength: ≥205N/mm² | Elongation: ≥40% | Hardness: ≤201HB

Core Characteristics

• Niobium-tantalum stabilization: Delivers better high-temperature stability and post-weld corrosion resistance than titanium-stabilized grades like 1.4541 • Excellent high-temperature creep resistance: Suitable for long-term service at up to 900°C in high-stress environments, ideal for high-temp plates/coils • Reliable weldability: No obvious performance degradation after welding, adapting to complex high-end plate/coil structures • High-end industrial use: Applied in nuclear power, high-temperature furnaces, critical process plates and precision high-temp components

1.4550 vs 1.4541 Stainless Steel Plate & Coil (Horizontal)

Stabilizer: 1.4550 (Nb+Ta) | 1.4541 (Ti) | High-Temp Stability: 1.4550 (Superior) | 1.4541 (Good) | Creep Resistance: 1.4550 (Better) | 1.4541 (General) | Application: 1.4550 (Nuclear/High-End) | 1.4541 (General High-Temp)

 

Stainless Steel Suppliers

If you have project requirements for stainless steel, we welcome your 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, tubes, bars, wires, etc. For detailed chemical composition information and free samples, please contact our factory immediately. We offer competitive prices and excellent service.Email: info@gneestainless.com

 

Testing and Documentation: Factory test certificate, EN 10204 3.1, chemical report, mechanical report, destructive testing report, non-destructive testing report, PMI test report, visual inspection report, third-party inspection report, NABL certified laboratory report.
Packaging: Wooden crate packaging, bubble wrap packaging, steel strapping, or packaging according to customer requirements.