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Most stainless steel tubing is heat treated by the bright annealing process, in which the tubing is annealed in a protective medium to prevent discoloration of the bright surface. Since austenitic stainless steel is the most often used tubing material, the heat treatment process is bright annealing of austenitic stainless steel in essence.
Standard Specification:
ASTM A213/A213M-11a: Standard Specification for Seamless Ferritic
and Austenitic Alloy Steel Boiler, Superheater, and Heat Exchanger
Tubes
ASTM A269-10: Standard Specification for General Purpose Seamless
and Welded Austenitic Stainless Steel Pipe
ASTM A312/A312M-12: Standard Specification for Seamless, Welded,
and Recold-Worked Austenitic Stainless Steel Pipe
ASTM A511/A511M-12: Standard Specification for Seamless Stainless
Steel Mechanical Tubing
ASTM A789/A789M-10a: Standard Specification for General Purpose
Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
ASTM A790/A790M-11: Standard Specification for Seamless and Welded
Ferritic/Austenitic Stainless Steel Pipe
DIN 17456-2010: Seamless round stainless steel tubes for general
purpose.
DIN 17458-2010: Seamless round austenitic stainless steel tubes
EN10216-5 CT 1/2: Stainless Steel Seamless Pipe
GOST 9941-81: Seamless cold-worked and warm-worked tubes made of
corrosion-resistant steel.
Other standards such as BS and JIS available
The addition of titanium also provides high corrosion resistance to ASTM A213 TP 321 pipe. Due to the addition of titanium, the risk of intergranular corrosion present in most high carbon steels in 321 stainless steel pipe is reduced. 321 stainless steel exhaust pipe lasts longer at high temperatures. Therefore, 321 stainless steel seamless tubes are used in heat exchangers and superheaters. These pipes are available in different types such as 321 stainless steel hoses that are easy to install and maintain. Applications for TP 321 stainless steel tubing can also be seen in boilers and condensers. We manufacture high quality 321 SS tubing in different sizes and types. Our SS 321 seamless pipe is suitable for small size pipes with high precision. This corrosion resistant steel can also be identified as 321 Cres Tubing. Our customers can also get custom finishes for these pipes. If you have any questions about product details or pricing, please contact us.
Material Grade:
| Grade | UNS Designation | Carbon | Manganese | Phosphorus | Sulfur | Silicon | Chromium | Nickel | Molybdenum | Nitrogen | Niobium | Titanium | Other Elements |
| TP321 | S32100 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-12.0 | 2.00-3.00 | -- | -- | 5(C + N)– 0.70 | -- |
| American Standard | Austenitic Steel: TP304, TP304L, TP304H, TP304N, TP310S, TP316, TP316L, TP316Ti, TP316H, TP317, TP317L, TP321, TP321H, TP347, TP347H, 904L… Duplex Steel : S31803, S32101, S32205, S32304, S32750, S32760 Others: TP405, TP409, TP410, TP430, TP439,... |
| Europen Standard | 1.4162, 1.4301, 1.4307,1.4362, 1.4401, 1.4404, 1.4410, 1.4438, 1.4462, 1.4501, 1.4539, 1.4541, 1.4550, 1.4571, 1.4841, 1.4845,1.4878, 1.4948, |
| GOST | 08Х17Т, 08Х13, 12Х13, 12Х17, 15Х25Т, 04Х18Н10, 08Х20Н14С2, 08Х18Н12Б, 10Х17Н13М2Т, 10Х23Н18, 08Х18Н10, 08Х18Н10Т, 08Х18Н12Т, 08Х17Н15М3Т, 12Х18Н10Т, 12Х18Н12Т, 12Х18Н9, 17Х18Н9, 08Х22Н6Т, 06ХН28МДТ |
A213 TP321 Stainless Steel Seamless Tube Mechanical Properties
| Tensile Strength | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 |
| Elongation | 35% |
Size Range:
| Production | Outside Diameter | Wall Thickness |
| Seamless Pipe | 6.00mm-830mm | 0.5mm-48mm |
Tube size and thickness are usually provided to this specification ranges from 1⁄8 inch [3.2 mm] inner diameter to 5 inches. [127 mm] outer diameter and 0.015 to 0.500 inches [0.4 to 12.7 mm], including minimum wall thickness, or, if specified Followed by the average wall thickness. Tubing has other diameters can be provided, as long as these tubes meet all other requirements of this specification.
Application:
