SUS321H Stainless Steel Plate & Coil: High-Carbon Titanium-Stabilized High-Temp Creep Resistant Plate/Coil

What is SUS321H Stainless Steel Plate & Coil?

SUS321H stainless steel plate & coil is the high-carbon variant of SUS321, combining titanium stabilization with high-carbon-enhanced creep strength. It is specialized for high-temperature, high-stress industrial plates and coils in power and boiler industries.

Equivalent Grades (Horizontal)

UNS: S32109 | JIS: SUS321H | GB: 07Cr18Ni11Ti | EN: X7CrNiTi18-10 | W.Nr.: 1.4541

Chemical Composition (wt%, Horizontal)

C: 0.04-0.10 | Si: ≤1.00 | Mn: ≤2.00 | P: ≤0.045 | S: ≤0.030 | Cr: 17.00-19.00 | Ni: 9.00-12.00 | Ti: ≥5×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

• High-carbon optimization: Significantly boosts high-temperature creep strength, maintaining stability at 600-870°C under long-term stress for plate/coil components • Titanium stabilization: Ensures excellent post-weld intergranular corrosion resistance, matching high-temperature performance requirements • Mandatory post-weld annealing: Optimizes grain structure, maximizing creep resistance and structural uniformity of processed plates/coils • Critical high-temp component dedicated: Suitable for boiler superheaters, high-pressure high-temp plates and industrial furnace coil components

SUS321H vs SUS321 Stainless Steel Plate & Coil (Horizontal)

Carbon Content: SUS321H (0.04-0.10%) | SUS321 (≤0.08%) | Creep Strength: SUS321H (Excellent) | SUS321 (Good) | Annealing Requirement: SUS321H (Mandatory) | SUS321 (Optional) | High-Temp Stress Adaptability: SUS321H (Strong) | SUS321 (General)

 

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.