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| Brand Name: | Jinxi Pipe |
| Model Number: | Stainless steel pipe |
| MOQ: | 1 |
| Price: | 2500USD/TON |
| Payment Terms: | L/C,D/A,D/P,T/T,Western Union |
| Supply Ability: | 10000000 |
ASTM A249 TP321 Bright Annealed Welded Stainless Steel Tube
Specifications
ASTM A249 TP321 is a specification for welded tubes made from a titanium-stabilized austenitic stainless steel, designed for use in high-temperature and corrosive applications like boilers, superheaters, and heat exchangers. The addition of titanium helps prevent intergranular corrosion after welding by stabilizing carbides, while also improving the steel's strength at high temperatures. This makes it a durable and reliable material for demanding environments in industries such as petrochemicals, aerospace, and power generation.
| American Standard | Standard Name |
| A 249 / SA 249 | Welded Austenitic Steel Boiler,Superheater, Hear Exchanger and Condenser Tubes |
ASTM A249 TP321 Welded Stainless Steel Tube Chemical Composition
(Sources American Standard A249 / A249M TABLE 1 Chemical Requirements,% A)
| Grade | UNS Desig | C | Mn | P | S | Si | Cr | Ni | Mb | Ti | Nb | N | Cu | Ce | Al |
| TP321 | S32100 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0–19 | 9.0–12 | . . . | Ti 5 × (C+N) min, 0.70 max | . . . | 0.1 | . . . | . . . | |
| TP321H | S32109 | 0.04 – 0.1 | 2 | 0.045 | 0.03 | 1 | 17.0–19 | 9.0–12 | . . . | 4(C+N) min; 0.70 max | . . . | 0.1 | . . . | . . . | |
| TP321H | S32654 | 0.02 | 2.0-4 | 0.03 | 0.005 | 0.5 | 24.0–25 | 21.0–23 | 7.0-8 | . . . | . . . | 0.45- 0.55 | 0.30-0.6 | . . . | |
| TP321H | S33228 | 0.04 - 0.08 | 1 | 0.02 | 0.015 | 0.3 | 26.0–28 | 31.0–33 | . . . | . . . | 0.60- 1 | . . . | . . . | 0.05 - 0.1 | 0.025 |
| TP321H | S34565 | 0.03 | 5.0-7 | 0.03 | 0.01 | 1 | 23.0–25 | 16.0–18 | 4.0-5 | . . . | 0.1 | 0.40- 0.6 | . . . | . . . |
ASTM A249 TP321 Welded Stainless Steel Tube Mechanical Properties
(Sources American Standard A249 / A249M TABLE 4 Tensile and Hardness Requirements A)
| Grade | UNS Designation | Tensile Strength, min ksi [MPa] | Yield Strength, min ksi [MPa] | Elongationin 2 in. or 50mm,min,%A,B |
| TP321 | S32100 | 75 [515] | 30 [205] | 35 |
| TP321H | S32109 | 75 [515] | 30 [205] | 35 |
| TP321H | S32654 | 109 [750] | 62 [430] | 35 |
| TP321H | S33228 | 73 [500] | 27 [185] | 30 |
| TP321H | S34565 | 115 [795] | 60 [415] | 35 |
ASTM A249 TP321 Welded Stainless Steel Tube Application