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| Brand Name: | Jinxi Pipe |
| Model Number: | Stainless steel pipe |
| MOQ: | 1 |
| Price: | 3000USD/TON |
| Payment Terms: | L/C,D/A,D/P,T/T,Western Union |
| Supply Ability: | 10000000 |
ASTM A312 TP321H Stainless Steel Tube For High-Temperature Heat Exchangers
Specifications
ASTM A312 TP321H stainless steel seamless tubes are widely used in high-temperature and high-pressure applications. They are commonly found in the oil and gas industry, particularly in refineries, petrochemical plants, and offshore drilling operations. Additionally, they are used in power generation plants, chemical processing equipment, and other industrial applications where exposure to corrosive environments or high temperatures is inevitable.
| American Standard | Standard Name |
| A 312 / SA 312 | Seamless,Welded and Heavily Cold Worked Austenitic Stainless Steel Pipes |
ASTM A312 TP321H Stainless Steel Tube Chemical Composition
(Sources American Standard A312 / A312M TABLE 1 Chemical Requirements)
| Steel Grade | UNS Designation A | ASTM A312 TP321H Chemical Composition % Max | ||||||
| C | Mn | P | S | Si | Cr | Ni | ||
| TP321H | S32109 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-12.0 |
ASTM A312 TP321H Stainless Steel Tube Mechanical Properties
(Sources American Standard A312 / A312M TABLE 4 Tensile and Hardness Requirements)
| Steel Grade | UNS Designation |
Tensile Strength | Yield Strength | Elongation %, Min |
| Ksi (MPa), Min. | Ksi (MPa), Min. | |||
| TP321H | S32109 | 75(515) | 30(205) | 35 |
ASTM A312 TP321H Stainless Steel Tube Application
ASTM A312 TP321H Key Distinction from TP321:
While both TP321 and TP321H are stabilized with titanium, TP321H is specifically mandated for code-approved pressure applications at high temperatures due to its guaranteed minimum elevated-temperature strength. TP321 is more general-purpose for corrosion resistance where high-temperature strength is not the primary design factor.