If you are looking for thick stainless steel plates suitable for high-temperature applications and possessing excellent resistance to intergranular corrosion, we can provide you with ASTM A240 347/347H Stainless Steel No. 1 Finished Plates. These plates are widely used in petrochemicals, boilers and pressure vessels, heat exchangers, high-temperature pipelines, and energy equipment manufacturing.
347/347H stainless steel plates are niobium (Nb) stabilized austenitic stainless steel. 347H features a higher carbon content (0.04–0.10%), providing better creep resistance and long-term strength at high temperatures, allowing for stable service at 800–900°C.
Our ASTM A240 347/347H No. 1 surface stainless steel plates are produced using hot rolling + solution annealing + pickling processes, resulting in a uniform matte No. 1 surface finish. Thickness typically ranges from 3mm to 80mm. The plates have stable dimensions and uniform internal structure, making them suitable for subsequent welding, cutting, and forming processes. Compared to conventional 304/321 materials, 347/347H effectively inhibits intergranular corrosion after high-temperature welding, significantly improving equipment safety and service life.
347/ 347H Hot-rolled stainless steel plate Manufacturing Process
If you want to know more, click here to contact us.
Specifications
| Standard Specifications | ASTM A240 / ASME SA240 |
| Thickness Available | 4 to 100mm |
| Width We manufacture | 1500mm, 3000mm, 2000mm, 2500mm, 1000mm, 1219mm, 1800mm, 3500mm etc |
| Stock Length | 2440mm, 2000mm, 5800mm, 6000mm, 3000mm etc |
| Plate form accessible | Foils, Plain Sheet, Flats, Coils, Shim Sheet, Rolls, Chequered Plate, Strip, Perforated Sheet, Blank (Circle),Ring (Flange) etc. |
| Mechanical Surface Finishing | etching, NO.1, hair line, Brush, embossed, 2D, 2B, NO.8, BA, 8K, checkered, NO.4, mirror, sand blast etc |
Alloy 347H Sheet thicknesses
| 1 1/2" | 1 1/4" | 1 3/4" | 3 1/2" | 2 1/4" | 2" | 2 3/4" | 2 1/2" | 3" | 4" |
|---|---|---|---|---|---|---|---|---|---|
| 38.1mm | 31.8mm | 44.5mm | 88.9mm | 57.2mm | 50.8mm | 69.9mm | 63.5mm | 76.2mm | 101.6mm |
| 1/4" | 3/16" | 5/16" | 1" | 1/2" | 3/8" | 3/4" | 5/8" | 7/8" | 1 1/8" |
| 6.3mm | 4.8mm | 7.9mm | 25.4mm | 12.7mm | 9.5mm | 19mm | 15.9mm | 22.2mm | 28.6mm |
SS 347 Plate Chemical Composition
|
Grade |
C |
Mn |
Si |
P |
S |
Cr |
Cb |
Ni |
Fe |
|
SS 347 |
0.08 max |
2.0 max |
1.0 max |
0.045 max |
0.030 max |
17.00 – 20.00 |
10xC – 1.10 |
9.00 – 13.00 |
62.74 min |
Stainless Steel 347 Plate Mechanical Properties
|
Density |
Melting Point |
Tensile Strength |
Yield Strength (0.2%Offset) |
Elongation |
|
8.0 g/cm3 |
1454 °C (2650 °F) |
Psi – 75000 , MPa – 515 |
Psi – 30000 , MPa – 205 |
35 % |
UNS S34709 Plate Price
| Description | Price |
| 347h 0.5mm Thick Steel Plate | US $ 1500-2500 / Ton |
| Hr SS Plate 347H | US $ 299-499 / Ton |
| 10mm 8mm 12mm 15mm Thickness 347H Stainless Steel Sheet | US $ 1650-2600 / Ton |
| 2mm Thick 347H stainless Steel Sheet | US $ 900-1600 / Ton |
| 20mm Thick Cold Rolled Stainless Steel 347H Sheet | US $ 1800-2200 / Ton |
The price of UNS S34709 steel plates varies depending on specifications, thickness, raw material costs, and market fluctuations. Missing updates may directly affect your procurement costs. Click to view the latest factory prices and inventory!
SS 347 Plate Supplier
Leveraging core equipment such as our 4200mm wide rolling mill, we have achieved large-scale production of 347H stainless steel plates. We can reliably supply ultra-wide products with a width exceeding 2800mm, thicknesses ranging from 1.5 to 100mm, and lengths up to 18000mm. Our monthly production capacity exceeds 1000 tons, with cumulative shipments of ultra-wide and thick plates exceeding 8000 tons.
Highest quality GNEE packaging and shipping
We offer flexible customization and rapid delivery capabilities, providing value-added processing services such as cutting, bending, and welding according to customer requirements. Standard specifications are readily available in stock, with delivery completed within 7-15 days.
In terms of packaging and transportation, all stainless steel plates are treated for moisture resistance and securely packaged using methods such as wooden crates, pallets, or bubble wrap.
Customer Visit
Hot Tags: ASTM A240 347/ 347H Stainless Steel NO.1 Finished Plate,Stainless steel plate
