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ASME SA213 TP321H Stainless Steel Boiler Tube
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Product Details
Brand Name: | LCKCGY | Place of Origin: | Shandong, China | Model Number: | STAINLESS STEEL PIPE |
Certification: | BV | Type: | Seamless | Application: | Industry |
Standard: | ASTM, AISI, DIN, EN, GB, JIS | Welding Line Type: | Seamless | Steel Grade: | 300 Series |
Product Description
SA213TP321H
Seamless ferritic and austenitic alloy steel boiler, superheater, and heat exchanger tubes.
SA213 AISI 321 UNS N32100 EN 10216 - 5 1.4541 is a stabilized stainless steel which offers as its main advantage an excellent resistance to intergranular corrosion following exposure to temperature in the chromium carbide precipitation range from 800 to 1500°F (427 to 816°C). Alloy 321 stainless steel tubing is stabilized against chromium carbide formation by the addition of titanium.
Hysical Properties of TP321 Stainless Steel Pipe in the Annealed Condition at -20°F to +100°F according to ASTM A213
Tensile Strength | Yield Strength | |||||||||||
Alloy | UNS | Spec | MPa | ksi | MPa | ksi | Elongation in 2 inches (min.) % | Req. | Maximum | (x106 psi) | Mean Coefficient of Thermal Expansion (IN./IN./ °F x 10-6) | Thermal Conductivity (BTU-in/ft2-h-°F) |
321 | S32100 | — | 515 | — | 205 | — | 35 | — | — | 29.0 | 9.2 | — |
321H | S32109 | — | 515 | — | 205 | — | 35 | 7 or coarser | — | 29.0 | 9.2 | — |
321 321H Stainless Steel Density Specific Gravity: 7.93 (kg/m3)
ASME SA 213 TP321 stainless steel chemical composition
Grade | TP321 | TP321H |
UNS Designation | S32100 | S32109 |
Carbon (C) Max. | 0.08 | 0.04–0.10 |
Manganese (Mn) Max. | 2.00 | 2.00 |
Phosphorous (P) Max. | 0.045 | 0.045 |
Sulphur (S) Max. | 0.03 | 0.03 |
Silicon (Si) Max. | 1.00 | 1.00 |
Chromium (Cr) | 17.0–20.0 | 17.0–20.0 |
Nickel (Ni) | 9.0–12.0 | 9.0–12.0 |
Molybdenum (Mo) | — | — |
Nitrogen (N) | - | - |
Iron (Fe) | Bal. | Bal. |
Other Elements | Ti=5(C+N) to 0.70% | Ti=4(C+N) to 0.70% |
TP321 Stainless Steel Pipe Range
Alloy | UNS Designation | Werkstoff NR. | Specifications* |
321 | S32100 | EN 10216 - 5 1.4541 | A269, A/SA249, A/SA312 |
321H | S32109 | — | A/SA249, A/SA312 |
TP321 Stainless Steel Pipe Typical Properties in the Annealed Condition
The properties quoted in this publication are typical of mill products. Unless otherwise indicated they should not be regarded as guaranteed minimum values for specification purposes.
TP321 Stainless Steel Tube Recommended Maximum Service Temperature
(Oxidising Conditions)
Continuous Service 950oC
Intermittent Service 870oC
TP321 Stainless Steel Pipe Thermal Processing
1. Annealing Heat from 1050 to 1150oC and cool in air. This ensures maximum ductility of the steel.
2. Stress Relieving 321 can be stress-relief annealed within the sensitization temperature range
450-800oC without carbide precipitation occurring, thus avoiding the possibility of intergranular corrosion.
3. Hot working
Initial forging and pressing temperature: 1150 - 1250oC
Finishing temperature: 950oC
TP321 Stainless Steel Tubing Corrosion Resistance
Equivalent to Grade 304 in the annealed condition, and superior if a weldment in these grades has not been post-weld annealed or if the application involves service in the 425-900°C range. Subject to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about 60°C. Considered resistant to potable water with up to about 200mg/L chlorides at ambient temperatures, reducing to about 150mg/L at 60°C.
Solution Treatment (Annealing) - heat to 950-1120°C and cool rapidly for maximum corrosion resistance.
Stabilising - heat to 870-900°C for 1 hour per 25mm of thickness and air cool. Stabilisation is recommended for most severe service conditions (above 425°C) and particularly for material annealed at the upper side of the annealing temperature range.
Stress Relief - Heat to 700°C for 1 to 2 hours and air cool.
These grades cannot be hardened by thermal treatment.
Excellent weldability by all standard fusion methods, both with and without filler metals. AS 1554.6 pre-qualifies welding of 321 and 347 with Grade 347 rods or electrodes; high silicon version of 347 is also pre-qualified for welding of 321.
Typical applications include:
• Stainless Steel Reheater Tubes and Superheater Tubes for Boiler
• Aircraft exhaust manifolds
• Expansion joints
• Bellows
• Furnace parts
• Heating element tubing
• Woven or welded screens for high temperature mineral processing
• Spiral Welded tube for burner pipes and flues
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