STAINLESS STEEL 304 FLANGES

SPECIFICATIONS

SS Flanges are available in different grades and standards. Some of the standard features these are made available in include
Specifications : ASTM A182 / A240, ASME SA182 / SA240
Standard : ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges etc.
Dimensions : ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Size : 1/2″ (15 NB) to 48″ (1200NB)
Pressure Ratings : Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc
Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

 

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Non-magnetic alloy SS 304 Flanges is the most versatile and the most widely used of all stainless steels. SS 304 Slip On Raised Flanges has lower cost, where reduced corrosion resistance and fabrication characteristics are acceptable. A lower stress relieving temperature of 400 Degree C maximum must be used in Stainless Steel 304 Blind Raised Flanges. To solution anneal, cool this SS 304 Weld Neck Flanges rapidly in air or water from about 1850 Degree F to 2050 Degree F. Stainless Steel 321 Flanges may also be used as an alternative to Stainless Steel 304 Socket Weld Flanges if heavy section welding is required and post-weld heat treatment is not possible. Stainless Steel 304 Threaded Flanges is also a common coil material for vaporizers. When machining SS 304 Lap Joint Flanges, its chip characteristics will be tough and stringy. Stainless Steel 304 Ring Joint Type Flanges have excellent weld-ability characteristics with or without the addition of filler metals. Essentially non-magnetic, Stainless Steel 304 Orifice Flanges becomes slightly magnetic when cold worked.

 

LIST OF STAINLESS STEEL 304 FLANGES

Stainless Steel 304 Spectacle Blind Flanges can be stress relieved at 450 Degree C – 600 Degree C for one hour with little danger of sensitization. SS 304 Orifice Flanges can be easily welded and processed by standard shop fabrication practices. For use in the most corrosive environments however, the welded structure of these Stainless Steel 304 Nippo Flanges should be re-annealed.

 

Equivalent Grades for 304 Stainless Steel Flange

Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
304 S30400 304S31 58E 1.4301 X5CrNi18-10 2332 SUS 304

 

304 Stainless Steel Flanges Chemical Composition

Grade C Mn Si P S Cr Mo Ni N
304 min. – – – – – 18.0 – 8.0 –
max. 0.08 2.0 0.75 0.045 0.030 20.0 10.5 0.10

 

SS 304 Flanges Mechanical Properties

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
304 515 205 40 92 201