Precision 316 Stainless Steel Sheet
316S (UNS S31608 / EN 1.4845) is an austenitic heat-resistant stainless steel engineered with a controlled, lower carbon range (0.04% - 0.10%) compared to standard grade 316. This chemistry limits grain boundary carbide precipitation, preserving structural integrity and mechanical load-bearing capacity in continuous high-temperature service up to 1150°C (2102°F).
Supplied globally in Hot Rolled (HR) Annealed and Pickled condition, 316S combines high chromium (24–26%) and nickel (19–22%) contents to resist aggressive scaling, carburization, and thermal fatigue in severe industrial thermal cycling.
Key Features
High-Temperature Oxidation Resistance: Retards protective scale spallation and maintains baseline structural strength up to 1150°C in continuous air service, and approximately 1050°C under intermittent thermal cycling.
Carbide Precipitation Suppression: Controlled maximum carbon content prevents intergranular corrosion and sensitization during welding and prolonged high-temperature exposure.
Creep Strength Stability: Exhibits superior high-temperature tensile retention and resistance to deformation under load compared to standard austenitic grades (e.g., 304/316).
Fabrication Adaptability: Fully compatible with standard industrial welding processes (SMAW, GTAW, GMAW) utilizing matching filler metals like ER316 for joint integrity.
Technical Specifications
Chemical Composition Limits (ASTM A240 / EN 10095)
|
Element |
Composition Range (%) |
|
Chromium (Cr) |
24.00 – 26.00 |
|
Nickel (Ni) |
19.00 – 22.00 |
|
Silicon (Si) |
Max 1.50 |
|
Manganese (Mn) |
Max 2.00 |
|
Carbon (C) |
Max 0.08 |
|
Phosphorus (P) |
Max 0.045 |
|
Sulfur (S) |
Max 0.030 |
|
Iron (Fe) |
Balance |
Room-Temperature Mechanical Properties (ASTM A240 Baseline)
|
Tensile Strength (Rm) |
Min 515 MPa (75 ksi) |
|
Yield Strength (Rp0.2 / Rp1.0) |
Min 205 MPa (30 ksi) |
|
Elongation (A) |
Min 40% |
|
Hardness (HBW) |
Max 225 |
Available Grades and Material Options
Material Variants: 316S (UNS S31608) standard stock; standard 316 (UNS S31600 - higher carbon variant) available upon project request.
Surface Condition:
No. 1: Hot-rolled, annealed, and chemically descaled (standard industrial plate finish).
Special Finish: Custom mechanical polishing or brush finish available for specialized clean-room or containment requirements.
Value-Added Processing Services:
CNC plasma cutting, fiber laser cutting, and high-pressure waterjet profiling to net/near-net dimensions.
Edge preparation (beveling) and precision CNC plate bending based on fabrication isometric drawings.
Applications
Industrial Thermal Processing
Radiant burner tubes, annealing covers, continuous furnace rollers, structural load-bearing muffles, and heat-treating trays.
Petrochemical & Refining
Catalyst support grids, tube hangers in thermal cracking units, flare headers, and high-temperature ducting.
Power Generation & Energy
Boiler baffle systems, gas turbine exhaust enclosures, and coal gasification internal components.
Environmental & Waste Management
Municipal and hazardous waste incinerator grates, rotary kiln protective linings, and high-temperature flue gas dampers.
Custom Thickness and Dimensions
Thickness Range: 3.0 mm up to 100.0 mm (0.118" to 3.937").
Standard Plate Widths: 1000 mm, 1250 mm, 1500 mm, 2000 mm, 2500 mm (Custom slitting and trimming available).
Standard Plate Lengths: 2000 mm, 3000 mm, 6000 mm, or precision cut-to-length up to 12000 mm.
Dimensional Compliance: Plate thickness, width, length, and flatness tolerances strictly manufactured in accordance with ASTM A480 or EN 10051 specifications.
Quality Control and Traceability
To satisfy strict engineering incoming inspection protocols, every production lot is verified through:
Positive Material Identification (PMI): Spectrometer testing executed on every individual master plate to verify exact alloy chemistry compliance.
Mechanical & Destructive Testing: Tensile, hardness, and bend testing conducted in accordance with ASTM and EN testing standards.
Non-Destructive & Dimensional Verification: Surface inspected for inclusions, scabs, or rolling defects; plate thickness mapped using ultrasonic digital gauges at multiple grid points.
Mill Test Certificate (MTC): Certified in full compliance with EN 10204 3.1, providing heat numbers, actual chemical composition, and physical test results. Third-party inspection (SGS, BV, TUV, DNV) welcomed prior to shipment.
Packaging and Shipping
Export-Grade Protection: Plates are interleaved with waterproof moisture-barrier paper, bound with heavy-duty structural steel strapping, and mounted on heavy-duty, fumigated wooden skids to prevent transit warping or mechanical shock.
Edge Guarding: Edge protectors fitted to all panel perimeters to prevent impact damage during ocean transport.
Logistics & Documentation: Containerized shipping (20GP/40GP) or breakbulk chartering directly from major export hubs, accompanied by full customs clearance documentation packages (Commercial Invoice, Packing List, MTC, Certificate of Origin).
FAQ
Request a Quote
To enable our technical sales and metallurgy team to issue an accurate, responsive quotation, please include the following parameters in your RFQ:
Dimensions: Thickness, Width, and Length (or attached CAD/DXF files for cut-to-shape components)
Quantity: Total metric tonnage or exact piece counts
Surface & Edge Requirements: Finish type and edge preparation specifications
Delivery Terms: Destination port (CIF/FOB) and required project schedule
Quality Requirements: Any mandatory third-party inspection (TPI) or supplementary testing protocols
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