Ninthore Overseas is one of the Leading Manufacturer And Exporter of high quality Stainless Steel 317 Washers, which resists attack from phosphoric acid and have been successfully used with nitric acid. SS 317 Flat Washers is unaffected by any of the weak bases such as ammonium hydroxide, even in high concentrations and at high temperatures. Stainless Steel 317 Lock Washers is exposed to stronger bases such as sodium hydroxide at high concentrations and high temperatures that will likely experience some etching and cracking, especially with solutions containing chlorides such as sodium hypochlorite. SS 317 Sealing Washers is a relatively poor conductor of electricity, with significantly lower electrical conductivity than copper.
Other metals in contact with Stainless Steel 317 Split Washers, particularly in a damp or acidic environment, may suffer galvanic corrosion even though the stainless metal may be unaffected. SS 317 Slot Washers is generally highly resistant to attack from acids, but this quality depends on the kind and concentration of the acid, the surrounding temperature, and the type of steel. Stainless Steel 317 Machine Washers is resistant to sulphuric acid at room temperature, even in high concentrations.
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Stainless Steel 317 Star Washers are resistant below 10 % and should not be used in the presence of sulphuric acid at any concentration. Hydrochloric acid will damage any kind of stainless steel, such as SS 317 Spring Washers, and should be avoided.
SS 317 Washer Specifications |
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| Specifications | : | ASTM A193 ASME SA193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | M02 to M33 |
| Size | : | 3 mm to 200 mm |
| Type | : | Flat Washer, Lock Washer, Sealing Washer, Split Washer, Slot Washer, Machine Washer, Star Washer SPRINGS – Wire Spring & Flat Spring |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 317 | 0.08 max | 2 max | 1.0max | 0.045 max | 0.030 max | 18 – 20 | 3.0-4.0 | 11.0-15.0 | 57.845 min |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.9 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS 317 | 1.4449 | S31700 | SUS 317 |
- Off-Shore Oil Drilling Companies
- Power Generation
- Petrochemicals
- Gas Processing
- Specialty Chemicals
- Pharmaceuticals
- Pharmaceutical Equipment
- Chemical Equipment
- Sea Water Equipment
- Heat Exchangers
- Condensers
- Pulp and Paper Industry
We at Ninthore Overseas provide Manufacturer TC (Test Certificate) in accordance to EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report. We also provide Standard certificates like EN 10204 3.1 and additional requirement like. NACE MR 01075. FERRIT CONTENT as per norms if requested by clients.
• EN 10204/3.1B,
• Raw Materials Certificate
• 100% Radiography Test Report
• Third Party Inspection Report, etc.
We at Ninthore Overseas ensure that all our materials go through strict quality tests before dispatching them to our clients.
• Mechanical Testing Such as Tensile of Area
• Hardness Test
• Chemical Analysis – Spectro Analysis
• Positive Material Identification – PMI Testing
• Flattening Test
• Micro and Macro Test
• Pitting Resistance Test
• Flaring Test
• Intergranular Corrosion (IGC) Test
• Commercial Invoice which includes HS Code
• Packing List including net weight and gross weight, number of boxes, Marks and Numbers
• Certificate of Origin legalized/attested by Chamber of Commerce or Embassy
• Fumigation Certificates
• Raw Material Test Reports
• Material Traceability Records
• Quality Assurance Plan (QAP)
• Heat Treatment Charts
• Test Certificates certifying NACE MR0103, NACE MR0175
• Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2
• Guarantee Letter
• NABL approved Laboratory Test Reports
• Welding Procedure Specification/Procedure Qualification Record, WPS/PQR
• Form A for the purposes of the Generalized System of Preferences (GSP)
Stainless Steel 317 Washers
Ninthore Overseas is one of the Leading Manufacturer And Exporter of high quality Stainless Steel 317 Washers, which resists attack from phosphoric acid and have been successfully used with nitric acid.
Product Brand: Ninthore Overseas
Product In-Stock: InStock
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