ASTM A269 TP304 / UNS S30400 / 1.4301 Bright Annealed Stainless Steel Seamless Tube
ASTM A269 TP304 Bright Annealed Tube which sets the requirements for seamless and welded austenitic stainless steel tubing. Bright annealed is a heat treatment process that improves the tube's corrosion resistance and creates a polished finish. This type of tube is commonly used in applications that require high levels of corrosion resistance, such as in the food and beverage industry or in medical equipment. The tube is typically available in a range of sizes and wall thicknesses to suit different applications.
1. Bright annealed welded pipe
The welded pipe is annealed in a vacuum controlled atmosphere to keep the surface free of oxidation and brightness. In this bright annealing process, protective gas is inserted into a closed furnace. Usually, the gas is purified hydrogen or a mixture of hydrogen and nitrogen from dissociated ammonia. When the pipe is heated to a certain specified temperature and cooled rapidly, a bright and smooth protective layer is formed on the surface of the pipe.
2. Bright annealed seamless pipe
Seamless pipe is made of stainless steel blank through crimping and coiling process. Annealing is the key stage of material quality to eliminate residual stress and uniform structure. For smooth application, seamless pipe requiring bright annealing. Compared with BA welded pipe, Ba seamless pipe is annealed in off-line annealing furnace. ASTM A269 usually stipulates that bright annealed seamless pipe is used for instrument pipe.
Equivalent Grade of ASTM A269 TP304 Stainless Steel Tube
| STANDARD | UNS | WERKSTOFF NR. | EN | BS | GOST | JIS | AFNOR |
| SS 304L | S30403 | 1.4306/1.4307 | X2CrNi18-9 / X2CrNi19-11 | 304S11 | 03Х18Н11 | SUS 304L | Z3CN18‐10 |
Specification of ASTM A269 TP304 Stainless Steel Tube
| ASTM A269 TP304L Stainless Steel Tubes Specification | ASTM A-249, A-268, A-269, A-270, A-554, A-688, A-778, DIN 17455, DIN 17456, 17457, DIN 17458 [Class 1] & Its equivalent ASME, DIN & EN Standard. |
| ASTM A269 TP304L Stainless Steel Tubes Grades | 202, 304, 304L, 304H, 304LN, 309S, 310S, 316, 316L, 316H, 316Ti, 316LN, 317L, 321, 321H, 347, 347H, 904L, SMO 254, ALLOY 254, 6MO, 6MOLY, UNS S31254 ETC. |
| ASTM A269 TP304L Stainless Steel Tubes Type | Seamless / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish |
| ASTM A269 TP304L Stainless Steel Tubes Length | Single Random Length, Double Random Length And Customize Size. |
| ASTM A269 TP304L Stainless Steel Tubes Ends | Plain Ends / Beveled Ends |
| ASTM A269 TP304L Stainless Steel Tubes Other Testing | Product Analysis, Transverse Tension Test, Flattening Test, Etching Test, Radiograph HIC Examination, Stabilizing Heat Treatment, Intergranular Corrosion Test, Weld Decay Test, Magnetic Particle Detection, Grain Size Test, NACE 0175, Dual Grade, PWHT (POST WELD HEAT TREATMENT), Flare Test, Bend Test, Hardness Test, Tensile Test etc |
| ASTM A269 TP304L Stainless Steel Tubes Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM And ASME |
| ASTM A269 TP304L Stainless Steel Tubes Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment / Annealed / Bright Annealed |
| ASTM A269 TP304L Stainless Steel Tubes Packaging | Plywooden Case /Iron Case/ Bundle with plastic Cap/requirements |
Other Material Grades
| American Standard | Austenitic Steel: TP304,TP304L,TP304H, TP304N, TP310S,TP316,TP316L,TP316Ti,TP316H, TP317,TP317L, TP321, TP321H,TP347, TP347H,904L… Duplex Steel : S32101,S32205,S31803,S32304,S32750, S32760 Others:TP405,TP409, TP410, TP430, TP439,... |
| Europen Standard | 1.4301,1.4307,1.4948,1.4541,1.4878,1.4550,1.4401,1.4404,1.4571,1.4438, 1.4841,1.4845,1.4539,1.4162, 1.4462, 1.4362, 1.4410, 1.4501 |
| GOST Standard | 08Х17Т,08Х13,12Х13,12Х17,15Х25Т,04Х18Н10,08Х20Н14С2, 08Х18Н12Б,10Х17Н13М2Т,10Х23Н18,08Х18Н10,08Х18Н10Т, 08Х18Н12Т,08Х17Н15М3Т,12Х18Н10Т,12Х18Н12Т,12Х18Н9, 17Х18Н9, 08Х22Н6Т, 06ХН28МДТ |
What the Difference Between Bright Annealing and Solution Annealing?
Bright annealing is processed in a closed furnace. This controllable atmosphere minimizes surface oxidation, making the surface brighter and the oxide layer thinner. Pickling is not required after bright annealing because the oxidation degree is very low. Without pickling, the surface is smoother, which leads to better pitting resistance. Use shielding gas inserted inside.
Compared with solution annealed products, bright annealed products have slightly higher hardness and higher tensile strength.
Solution annealing is a standard step for stainless steel materials. It is an open-air annealing. It is usually used to soften materials, minimize residual stress, improve processability and increase ductility. Some anneals require only a few minutes of temperature, while others can prolong the soaking time and control the cooling rate of high temperature, usually between 1010 º C and 1150 º C.
Applications
Stainless steel bright annealed tube is broadly used in applications (such as instruments, equipments, machinery) where requires high cleanliness inside surface, high precision dimensions, high corrossion resistance in various industries such as gas, chemical, shipbuilding, automobile,etc.
1. Food industry
2. chloride environments
3. Fasteners
4. Pharmaceuticals
5. Marine applications
6. Architectural applications
7. Medical implants which comprise pins, screws and orthopedic implants like total hip and knee replacements.
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ASTM A269 TP304 / UNS S30400 / 1.4301 Bright Annealed Stainless Steel Tube Images
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