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Stainless steel 347 pipe fittings are commonly used at various places and in various fields due to its deliberate addition of tantalum and niobium as its applicable temperature range is between 427°C – 899°C. primarily used in aircraft collector rings, boiler casing, furnace heating elements, high temperature gaskets, expansion joints, exhaust manifold, chemical production equipment, rocket engine parts, heavy wall welded equipment, cabin heaters, aircraft exhaust stacks etc. stainless steel 347 pipe fitting’s corrosion resistance is bit improved than that of the stainless steel 321.
Stainless steel 347H pipe fittings are similar to stainless steel 347 pipe fittings as they share many common or similar properties. Stainless steel 347H pipe fittings has higher carbon content and to stabilize it the addition of columbium or sometimes tantalum is made. It has a very high workability for most common welding techniques. To increase and improve stainless steel 347H in terms of toughness and strength only cold working is sufficient as it doesn’t respond well to heat. Along with this it has great creep strength and oxidation resistance. Few of its properties also includes electrical resistance, thermal conductivity etc. stainless steel 347 pipe fittings are generally used in chemical processing equipment on large scale due to its ultimate tensile strength, yield strength, elongation etc. stainless steel pipe fittings are normally available in various types such as welded, seamless, fabricated, EWF and ERW. Stainless steel 347H pipe fittings are also used in many different fields and industries due to its metal quality, properties mainly resistance towards corrosion and oxidation which improves its efficiency as well as durability of the product. Stainless steel 347H pipe fittings undergoes many testes like chemical tests, mechanical tests, micro test, macro test, hardness test, flaring test etc.
STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
SS 347 | 1.4550 | S34700 | SUS 347 | 08Ch18N12B | – | – | X6CrNiNb18-10 |
SS 347H | 1.4961 | S34709 | SUS 347H | – | – | – | X6CrNiNb18-12 |
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
SS 347 | 0.08 max | 2 max | 0.75 max | 0.045 max | 0.030 max | 18 – 20 | – | 8 – 11 | – |
SS 347H | 0.035 max | 2.0 max | 1.0 max | 0.045 max | 0.03 max | 18 – 20 | – | 8 – 13 | – |
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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Express Delivery
We understand the urgency of product requirement for Oil & Gas Industry & industrial breakdowns at various situations attenuating the project performance.
Our Certifications