SS 347/347H Washers, SS 347/347H Flat Washers, Stainless Steel Washers & SS 347/347H Washer Manufacturer and Supplier in Mumbai, India
Unifit Metal Alloys is a manufacturer, supplier, stockist and exporter of SS 347/347H Washers in Mumbai, India, supplying stainless steel washers for industrial machinery, fabrication, construction, process equipment and engineering applications. These washers are placed beneath nuts and bolt heads to distribute the fastening load across the bearing area, helping protect the mating surface and maintain a secure bolted connection.
SS 347/347H Washers are manufactured from stabilized austenitic stainless steel and are designed for applications involving elevated temperatures and corrosive service environments. The niobium-stabilized composition helps improve resistance to intergranular corrosion following exposure to high temperatures. Grade 347 is suitable for general high-temperature service, while 347H provides enhanced strength for applications operating under more demanding temperature conditions.
SS 347/347H Washers, SS 347/347H Flat Washers, Stainless Steel Washers & SS 347/347H Washer Manufacturer and Supplier in Mumbai, India
These washers are commonly used in chemical-processing equipment, heat exchangers, petrochemical plants, power-generation systems, high-temperature piping, refinery equipment, thermal processing machinery and industrial fabrication. Their combination of corrosion resistance and high-temperature performance makes them suitable for fastening assemblies exposed to heat and demanding operating conditions.
SS 347/347H Washers are available in different inside diameters, outside diameters, thicknesses and configurations to meet specific fastening requirements. Unifit Metal Alloys can supply standard as well as customized washer dimensions for fabrication, maintenance, equipment installation and specialized industrial projects.
Get the Best Quote for SS 347/347H Washers. We Stock SS 347/347H Washers in Various Diameters, Sizes, Specifications and Surface Finishes. Contact Us Today for a Competitive Quote.
SS 347/347H Washer Specification
| Material | Stainless Steel 347 / 347H |
|---|---|
| Grade | SS 347 / SS 347H |
| Standard | ASTM A240 / ASME SA240 |
| Equivalent Grade | UNS S34700 / UNS S34709 |
| Product Type | Flat Washers, Plain Washers, Heavy Washers, Fender Washers and Custom Washers |
| Size Range | M3 to M100 | 1/8″ to 4″ | Custom Sizes Available |
| Thickness | 0.5 mm to 20 mm | Custom Thickness Available |
| Manufacturing Process | Cold Rolled, Stamped, Pressed, Laser Cut or Machined |
| Heat Treatment | Solution Annealed |
| Thread Compatibility | Metric, UNC, UNF, BSF, BSW and Custom Threads |
| Finish | Plain, Pickled, Passivated, Polished and Custom Finishes |
| Corrosion Resistance | Excellent Resistance to General Corrosion, Oxidation and Intergranular Corrosion |
| Temperature Resistance | Excellent High-Temperature Resistance and Suitable for Elevated-Temperature Applications |
| Application | Heat Exchangers, Chemical Processing, Petrochemical, Oil & Gas, Power Generation, Aerospace, High-Temperature Equipment and General Engineering |
Chemical Composition for SS 347/347H Washer
| Element | SS 347 (%) | SS 347H (%) |
|---|---|---|
| Carbon (C) | 0.08 max. | 0.04 – 0.10 |
| Manganese (Mn) | 2.00 max. | 2.00 max. |
| Silicon (Si) | 0.75 max. | 0.75 max. |
| Phosphorus (P) | 0.045 max. | 0.045 max. |
| Sulfur (S) | 0.030 max. | 0.030 max. |
| Chromium (Cr) | 17.00 – 19.00 | 17.00 – 19.00 |
| Nickel (Ni) | 9.00 – 13.00 | 9.00 – 13.00 |
| Columbium + Tantalum (Cb + Ta) | 10 × C min. – 1.00 max. | 10 × C min. – 1.00 max. |
| Nitrogen (N) | 0.10 max. | 0.10 max. |
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Equivalent Grades of SS 347/347H Washer
| Standard | SS 347 | SS 347H |
|---|---|---|
| UNS (USA) | S34700 | S34709 |
| WNR (Europe) | 1.4550 | 1.4961 |
| JIS (Japan) | SUS 347 | SUS 347H |
| BS (United Kingdom) | 347S31 | 347S51 |
| EN / DIN (Germany) | X6CrNiNb18-10 | X6CrNiNb18-12 |
| AFNOR (France) | Z6CNNb18-10 | Z6CNNb18-12 |
| GOST (Russia) | 08KH18N12B | 12KH18N12T |
Ready Stock of SS 347/347H Washer
SS 347/347H Washer Application Industries
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