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| Availability: | |
|---|---|
| Quantity: | |
Grade | C | Mn | Si | P | S | Cr | Ni | N | Ti |
321 | ≤0.08 | ≤2.00 | ≤1.00 | ≤0.045 | ≤0.03 | 17.00-19.00 | 9.00-12.00 | - | |
321H | 0.04-1.00 | ≤2.00 | ≤1.00 | ≤0.045 | ≤0.03 | 17.00-19.00 | 9.00-12.00 | ≤0.10 | 4(C+N)-0.7 |
Grade | UNS No | EN | Gb | JIS | |
No | Name | ||||
321 | S32100 | 1.4541 | X6CrNiTi18-10 | 0Cr18Ni11Ti | SUS 321 |
321H | S32109 | 1.4878 | X10CrNiTi18-10 | 1Cr18Ni9Ti | SUS 321H |
Grade | Tensile Strength ksi(MPa) | Yield Strength ksi(MPa) | Elongation (% in 50mm) |
321,t≤0.375in(9.5mm) | ≥75(515) | ≥30(205) | ≥35 |
| 321,t>0.375(9.2mm) | 70(485) | 25(170) | ≥35 |
| 321H,t≤0.375in(9.5mm) | ≥75(515) | ≥30(205) | ≥35 |
| 321H,t>0.375(9.2mm) | 70(485) | 25(170) | ≥35 |
• Aircraft exhaust manifolds
• Expansion joints
• Bellows
• Furnace parts
• Heating element tubing
• Heat Exchangers
• Woven or welded screens for high temperature mineral processing
• Spiral Welded tube for burner pipes and flues
End of Pipe and Tube
Ply Wooden Boxes
PE Fabric Bundles
Standard seaworthy export packing
Plastic Bags, or as required
Marking
Supplier / Manufacturer Name or Custom Logo - on request
Specification
Material Grade
Nominal Size
Schedule or Wall Thickness
Method of Manufacturing (Seamless or Welded)
Heat Number
Marked Pipe Sample: XTD ASTM A312 TP321 SEAMLESS 42.2x 3.56*6000MM HEAT NO. 2023121205A15
Packing
Ply Wooden Boxes
PE Fabric Bundles
Standard seaworthy export packing
Plastic Bags, or as required
Delivery Condition
Pickled&Annealed, Polished, Bright Annealed.
All tubes shall be supplied as per applicable ASTM B163 /B426
Mill test certificates will be issued
We can provide 3.2 Certification according to the needs of you
Standard
ASTM A312: Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
ASTM A213: Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
Grade 321 is the grade of choice for applications in the temperature range of up to about 900°C, combining high strength, resistance to scaling and phase stability with resistance to subsequent aqueous corrosion.
Grade 321H is a modification of 321 with a higher carbon content, to provide improved high temperature strength.
Like other austenitic grades, 321 have excellent forming and welding characteristics, are readily brake or roll formed and have outstanding welding characteristics. Post-weld annealing is not required. They also have excellent toughness, even down to cryogenic temperatures. Grade 321 does not polish well, so is not recommended for decorative applications.
Grade 304L is more readily available in most product forms, and so is generally used in preference to 321 if the requirement is simply for resistance to intergranular corrosion after welding. However 304L has lower hot strength than 321 and so is not the best choice if the requirement is resistance to an operating environment over about 500°C.
