A403 WP347H Stainless Steel Pipe Fitting 90 Degree Elbow

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ASTM A403 is a balanced, austenitic, chromium steel containing columbium which takes into consideration the end of carbide precipitation, and thus intergranular corrosion.
 
ASTM A403 is balanced out by the increases of chromium and tantalum and offers higher creep and stress rupture properties than A304 and A304L, which may also be utilized for exposures where sensitization and intergranular corrosion are of concern.The expansion of columbium likewise permits ASTM A403 to have outstanding corrosion resistance, better than that of A321. ASTM A403H is the higher carbon composition form of ASTM A403 and display enhanced high temperature and creep properties.
 
Characteristics

• Higher creep stress and rupture properties when compared with 304
• Ideal for high temperature service
• Overcomes sensitization and intergranular corrosion concerns
• Can be used in elevated temperature applications
• Due to stabilisation the material offers better overall corrosion resistance when compared to 304/304L

 
ASTM A403 WP347 Fittings buttweld stainless steel pipe fittings that are weldable onto the pipes they need to fit on. There are different types, forms and shapes of fittings available. The functions include changing the direction of fluid flow, reducing the diameter of the pipeline, joining two fluid flow lines together and splitting a line into two. The A403 WP347 Elbow functions to change the direction of fluid flow but is more abrupt than the bend. ASTM A403 gr WP347 fittings vary in shape and function such as the union, adapter, double-tapped bushing, coupling and valves. A403 WP347 material is austenitic stainless steel specialized for pressure pipes.
 
 
ASTM A403 WP347H Chemical Composition

 
ASTM A403 WP347H Mechanical Properties

 
 
Corrosion Resistance
347H stainless steel plate displays good general corrosion resistance that is similar to TP304. It was produced for use in the chromium carbide precipitation scope by 800 – 1500°F (427 – 816°C) where unbalanced alloys such as SS304 are subject to intergranular attack. In this temperature scope, the overall corrosion resistance of Alloy 347 stainless steel plate is better than TP321 stainless steel plate. 347H additionally performs somewhat superior to TP321 in strongly oxidizing situations up to 1500°F (816°C). The alloy can be utilized as a part of nitric solutions; most diluted organic acids at moderate temperatures and in pure phosphoric acid at lower temperatures and up to 10% diluted solutions at high temperatures. 347H stainless steel plate resists polythionic acid stress corrosion cracking in hydrocarbon service. It can also be used in chloride or fluoride free caustic solutions at moderate temperatures. 347H stainless steel plate doesn’t perform well in chloride solutions, even in small concentrations, or in sulfuric acid.
 
Application

• Petroleum
• Chemical
• Machinery
• Boiler
• Electric power
• Shipbuilding
• Papermaking
• Construction