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Stainless Steel 347 Sheet, Plate & Coil are popular austenitic stainless steel products known for their strength, cost efficiency, and versatility. SS 347 is a chromium-nickel-manganese alloy designed to be a lower-cost alternative to grades like 304. It offers a perfect balance of hardness, corrosion resistance, and formability for both industrial and decorative applications.
SS 347 Sheets and Plates are manufactured from high-quality raw materials that comply with ASTM A240 / ASME SA240 standards. These materials exhibit excellent toughness, good drawability, and high resistance to wear and abrasion. Stainless Steel 347 can be easily fabricated, welded, and polished, making it ideal for products requiring durability and a clean finish.
The chemical composition of Stainless Steel 347 includes about 16–18% chromium, 4–6% nickel, and up to 7.5% manganese. This unique composition enhances its strength and gives it good resistance to oxidation and mild corrosion. Though not as corrosion-resistant as 304 or 316, SS 347 performs well in mildly corrosive environments and indoor applications.
Stainless Steel 347 Coils are available in both hot-rolled and cold-rolled forms, with a wide range of thicknesses and finishes such as 2B, BA, and No.4. These coils are often used to produce kitchen utensils, decorative panels, railway coaches, sinks, and appliances. Their bright, attractive surface finish also makes them suitable for architectural and interior design applications.
SS 347 Sheets and Plates offer an excellent combination of strength and toughness even at low temperatures. They are known for their good work-hardening ability, allowing manufacturers to form or bend them easily without cracking. The alloy’s mechanical properties make it a reliable choice for light structural components and machinery parts.
Stainless Steel 347 Sheet, Plate & Coil are widely used in industries such as construction, food processing, automotive, and furniture manufacturing. Their aesthetic appearance and cost-effectiveness make them a preferred material for kitchenware, countertops, appliances, and other decorative purposes where corrosion exposure is minimal.
Welding and fabrication of SS 347 can be done using standard methods such as TIG, MIG, or resistance welding. It does not require preheating before welding, though post-weld annealing may be applied to restore optimal corrosion resistance. The material can also be cut, drilled, and polished to achieve specific dimensions and finishes as per client requirements.
At reputable suppliers, Stainless Steel 347 Sheets, Plates & Coils are supplied with Mill Test Certificates (MTC) confirming compliance with EN 10204 3.1 standards. Each product undergoes stringent quality checks for mechanical strength, dimensional accuracy, and surface finish. Protective coatings and packaging ensure safe transportation and long-lasting quality.
Specification Table
| Specifications | Details |
|---|---|
| Product | Stainless Steel 347 Sheet, Plate & Coil |
| Grade | 347 / 347H |
| Standard | ASTM A240 / ASME SA240 |
| Material | Austenitic Stainless Steel stabilized with Niobium (Columbium) |
| UNS Number | S34700 / S34709 |
| Equivalent Designation | EN 1.4550, X6CrNiNb18-10 |
| Thickness | 0.3 mm to 120 mm |
| Width | 1000 mm to 2500 mm |
| Length | 2000 mm to 6000 mm (Custom cut lengths available) |
| Finish | 2B, BA, No.1, No.4, Mirror, HR, CR |
| Form | Sheet, Plate, Coil, Strip, Shim |
| Density | 8.0 g/cm³ |
| Melting Point | 1400 – 1425°C |
| Certification | EN 10204 3.1 / 3.2, NACE MR0175, PED Approved |
| Applications | Chemical Processing, Heat Exchangers, Petrochemical, Power Generation, Exhaust Systems |
Chemical Composition (Typical ranges for SS347)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.08 max |
| Manganese (Mn) | 2.00 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.030 max |
| Silicon (Si) | 1.00 max |
| Chromium (Cr) | 17.0 – 19.0 |
| Nickel (Ni) | 9.0 – 13.0 |
| Niobium (Cb + Ta) | 10 × C min – 1.10 max |
| Iron (Fe) | Balance |
Mechanical Properties (Typical)
| Property | Value | Unit |
|---|---|---|
| Density | 8.0 | g/cm³ |
| Hardness (Brinell) | 150 max | HB |
| Tensile Strength | 515 – 690 | MPa |
| Yield Strength (0.2% offset) | 205 min | MPa |
| Elongation at Break | 40 min | % |
| Modulus of Elasticity | 193 | GPa |
| Poisson's Ratio | 0.30 | – |
| Melting Point | 1400 – 1425 | °C |
| Thermal Conductivity | 16 | W/m·K |
| Coefficient of Thermal Expansion | 16.5 × 10⁻⁶ | per °C (20–100°C) |
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| AISI / SAE | 347 / 347H |
| UNS | S34700 / S34709 |
| EN / DIN | 1.4550 / X6CrNiNb18-10 |
| JIS | SUH347 |
| GB / China | 0Cr18Ni10Nb |
| BS | 347S31 |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Thickness (mm) | Width (mm) | Length (mm) | Weight per Sheet / Coil (kg) |
|---|---|---|---|
| 0.5 | 1000 | 2000 | 8 |
| 1.0 | 1000 | 2000 | 16 |
| 2.0 | 1250 | 2500 | 50 |
| 3.0 | 1500 | 3000 | 108 |
| 5.0 | 1500 | 6000 | 360 |
| 6.0 | 2000 | 6000 | 576 |
| 10.0 | 2000 | 6000 | 960 |
| 12.0 | 2000 | 6000 | 1152 |
| 20.0 | 2500 | 6000 | 2400 |
| 25.0 | 2500 | 6000 | 3000 |
| Thickness (mm) | Width (mm) | Length (mm) | Weight per Sheet / Coil (kg) |
| 0.5 | 1000 | 2000 | 8 |
| 1.0 | 1000 | 2000 | 16 |
| 2.0 | 1250 | 2500 | 50 |
| 3.0 | 1500 | 3000 | 108 |
| 5.0 | 1500 | 6000 | 360 |
| 6.0 | 2000 | 6000 | 576 |
| 10.0 | 2000 | 6000 | 960 |
| 12.0 | 2000 | 6000 | 1152 |
| 20.0 | 2500 | 6000 | 2400 |
| 25.0 | 2500 | 6000 | 3000 |
Common Types Of Sheet Plates
Shim Sheet Plate
Perforated Sheet Plate
Chequered Plate
Coil
Strips
Foil
Hot Rolled Sheet Plates
Cold Rolled Plate
Matt PVC Sheet Plate
Frequently Asked Questions (FAQ)
What is Stainless Steel 347?
Stainless Steel 347 is a niobium-stabilized austenitic stainless steel offering excellent resistance to intergranular corrosion and high-temperature oxidation. It is ideal for welded assemblies and heat-resistant applications.
What are the common applications of SS 347 Sheet, Plate & Coil?
SS 347 is widely used in chemical processing, heat exchangers, boiler components, petrochemical industries, exhaust systems, and power generation equipment.
What standards and grades does SS 347 conform to?
Stainless Steel 347 typically conforms to ASTM A240 / ASME SA240, UNS S34700 / S34709, and equivalent EN 1.4550 standards.
What are the available forms and finishes?
It is available in sheet, plate, coil, strip, and shim forms. Common finishes include 2B, BA, No.1, No.4, Mirror, HR, and CR finishes.
What is the typical chemical composition?
SS 347 contains: C ≤0.08%, Cr 17–19%, Ni 9–13%, Mn ≤2%, Si ≤1%, P ≤0.045%, S ≤0.03%, Nb (10×C min – 1.10%), balance Fe.
Sheet Plates & Coils Supplier
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