ASME SA213 TP321 BA Tube For High Temperature

What is ASME SA213 material?
The SA213 grade covers ferritic and austenitic Stainless Steel material. Our Stainless Steel 304 Seamless Tube could be used for boilers, heat exchangers, condensers and in super heaters.

 

What is ASME SA213 TP321 bright steel pipe?
ASME SA213 TP321 bright steel pipe is a high-standard seamless austenitic stainless steel pipe used in critical equipment such as boilers and pressure vessels. Made from titanium (Ti)-stabilized 321 stainless steel, it undergoes a bright annealing (BA) process, leaving its surface free of scale and decarburization and forming an extremely pure, dense, and uniform chromium passivation film. This not only provides superior corrosion resistance compared to ordinary pickled pipe, but also offers a smooth, flawless surface that resists the adhesion and residual contaminants, making it easy to clean and sterilize, meeting the requirements of industries such as food, pharmaceutical, and petrochemicals.

 

ASTM A213 SS 321 Equivalent:

Grade	UNS No	Old British		Euronorm		Swedish SS	Japanese JIS
		BS	En	No	Name
SS 321	S32100	321S31	58B, 58C	1.4541	X6CrNiTi18-10	2337	SUS 321

Chemical Composition

Grade	C	Mn	Si	P	S	Cr	N	Ni	Ti
SS 321	0.08 max	2.0 max	1.0 max	0.045 max	0.030 max	17.00 - 19.00	0.10 max	9.00 - 12.00	5(C+N) – 0.70 max

Mechanical Properties

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
				Rockwell B (HR B) max	Brinell (HB) max
321	515	205	40	95	217

Physical Properties

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Co-eff of Thermal Expansion (µm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100°C (J/kg.K)	Elec Resistivity (nΩ.m)
			0-100°C	0-315°C	0-538°C	At 100°C	At 500°C
321	8027	193	16.6	17.2	18.6	16.1	22.2	500	720

 

Choose bright annealed (BA) tube when:
Extremely high corrosion resistance is required, especially in harsh environments such as the chemical and marine industries.
High cleanliness requirements to prevent product contamination, such as in the food, pharmaceutical, and semiconductor industries.
Aesthetics are important, such as for visible decoration or high-end equipment components.
Media tend to deposit or adhere to the surface, and a smooth surface is easier to clean and maintain (such as food and dairy piping)

 

If you have a project need for 321 stainless steel bright annealed tubing, we welcome your order. GNEE has a large inventory of popular products for you to choose from. We offer a variety of practical product forms, including seamless and welded. For detailed chemical composition and free samples, please contact our factory today. We offer competitive pricing and excellent service.Email: sales@gneestainless.com

 

Packing and Marking

Packed in bundles or ply wooden box wrapped in plastic, and suitably protected for sea-worthily delivery or as requested.