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Stainless Steel 347H Washers are made from a stabilized austenitic stainless-steel grade containing chromium, nickel, and niobium along with higher carbon content for improved heat resistance. This composition offers excellent creep strength, good corrosion resistance, and enhanced stability at elevated temperatures. The washers provide reliable tensile and yield strength, remarkable durability, and resistance to intergranular corrosion. Their mechanical properties make them suitable for environments involving heat cycling, pressure variations, and corrosive exposure. SS 347H Washers deliver consistent performance where both thermal stability and long-term structural integrity are essential.
Stainless steel 347H washers are mainly made of iron, chromium, nickel, and columbium (niobium), which provide sensitivity and good resistance to intergranular corrosion in high temperature regions up to 900°C Good mechanical properties such as high tensile strength, good creep strength and increased corrosion resistance Benefits of higher temperatures Include durability, suitability for the chemical, aerospace, and electrical industries, and minimum maintenance The stainless steel 347H washer offers capable performance reliable and robust in critical applications requiring high corrosion resistance and thermal stability.
| Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
| SS 347H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 20.00 | 8xC – 1.10 | 9.00 – 13.00 | 63.72 min |
| 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 % |
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SS 347H 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 |
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Stainless steel 347H washers are a must for applications that require reliable performance in high corrosion temperature conditions. It is widely used in chemical plants to protect equipment exposed to acidic environments and high temperatures. In aerospace applications, 347H washers ensure safe bonding of materials under extreme heat and stress. Additionally, stainless steel 347H washers which find an important application in oil and gas refineries due to their resistance to sulfide stress cracking and nuclear reactors due to their resistance to radiation and high temperatures offer durable and reliable solutions in challenging industrial environments.
Stainless Steel 347H Washers are widely used in industries that operate in high-temperature and corrosive environments. They are commonly applied in heat exchangers, boilers, refinery units, petrochemical processing equipment, and furnace components due to their strong resistance to thermal stress. These washers also perform well in chemical plants, power generation systems, and exhaust manifolds, where durability and reliability are critical. Their ability to maintain stability under fluctuating temperatures and pressure makes them ideal for heavy-duty industrial operations. Overall, SS 347H Washers are a trusted choice for applications requiring long-lasting strength and elevated heat tolerance.
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