ASTM A312 TP304 is a specification issued by the American Society for Testing and Materials (ASTM) that covers seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service. "TP304" refers to the specific grade of stainless steel used, which is Type 304.
Type 304 stainless steel is a versatile austenitic stainless steel that contains a combination of chromium and nickel. It offers excellent corrosion resistance, good formability, and high-temperature strength. This grade of stainless steel is commonly used in various industries such as food processing, chemical processing, pharmaceuticals, and oil and gas.
TP304 SS Seamless Pipe size range from Schedule 5S to Schedule XXS, with a nominal wall thickness of 0.15 inches to 1.65 inches.The ASTM A312 TP304 SS seamless pipe is available in various finishes such as annealed and pickled, bright annealed, polished, and mill finish. The pipe can be custom cut to size to meet specific requirements.
ASTM A312 TP304 SS Seamless Pipe Specification
Stainless Steel Pipe Grade: 201, 430, 410, 409, 304, 304L, 316, 316L, 904, 904L, 310S.
Stainless Steel Pipe Standards: ASTM A213, A269, A312; JIS G3459, JIS G3463; EN 10216-5; BS 3605, 3606; DIN 17456, 17458, etc.
Diameter of Stainless steel pipe: OD(mm) 9.5, 12.7, 15.9, 17, 18, 19.1, 20, 21, 22.2, 23, 25.4, 28, 31.8, 35, 38.1, 48, 50.8, 60, 63.5, 63.5, 73, 76.2, 88.9, 101.6, 114, 127, 129, 133, 141, 159, 168, 175, 191, 203, 207, etc.
Wall thickness of Stainless steel tube: 0.25mm-3mm
Surface: 2B, Mirror, Polish, hairline, Satin,No.4.
Tolerance: A)Outer diameter: +/-0.2mm B)Thickness: +/-10% C)Length: +/-5mm
Application: Structural, decoration (fencing, railing, balcony balustrades, antitheft doors/ windows, gate fittings, staircases, furniture fittings, sanitary wares fittings, kitchen wares fittings, mechanical fittings, tripod for camera, etc)
A312 TP304 SS Pipe Wall Thickness
| 028 | = | .028" Thick |
| 035 | = | .035" Thick |
| 039 | = | .039" Thick |
| 049 | = | .049" Thick |
| 065 | = | .065" Thick |
| 083 | = | .083" Thick |
| 109 | = | .109" Thick |
A312 TP304 Chemical Properties
| A312 GRADES | UNS | C | Mn | P | S | Si | Cr | Ni | Mo | Ti | Nb | N |
| TP304 | S30400 | 0.08 | 2.0 | 0.045 | 0.030 | 1.0 | 18.0-20.0 | 8.0-11.0 |
A312 TP304 Physical Properties
| Grade | TS(Mpa) | YS(Mpa) | EL(Mpa) |
| 304 | ≥520 | ≥205 | ≥40 |
304SS Mechanical Properties
| Grade | 304 |
| Tensile Strength (MPa) min | 515 |
| Yield Strength 0.2% Proof (MPa) min | 205 |
| Elongation (% in 50mm) min | 40 |
| Hardness | |
| Rockwell B (HR B) max | 92 |
| Brinell (HB) max | 201 |
The seamless pipe manufactured by ASTM A312 TP304 is commonly used in the food processing, petrochemical, and pharmaceutical industries, as well as in industries involved in the transport of gas and fluid. This pipe can be used for a wide range of applications, including high-temperature and corrosive fluid transfer, steam service, and general purpose use.
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