ASTM A312 Tp321 Seamless Stainless Pipe Ti

• Type: Stainless Steel Pipes, Seamless
• Standard: ASTM, AISI
• Grade: 300 Series
• Certification: ISO
• Shape: Round
• Technique: Cold-Drawing, Cold Drawn
• Model NO.: DN200
• Surface Treatment: Pickling
• Material: Stainless Steel
• Usage: Pipeline Transport, Boiler Pipe, Food/Beverage/Dairy Products, Chemical Industry
• Section Shape: Round
• After-Sales Service: Change/Return
• Warranty: 10 Year
• Outside Diameter: 1/2"-24"
• Wall Thickness: Sch5s-Sch160s, Xs, Xxs
• Length: 5.8meter, 6m, 11.8m, 12m or as Request
• Steel Grade: 304, 316, 316ti, 309, 310, 321, 347, 940 etc.
• Buniness Type: Manufacturer, Exporter
• Exporter Percentage: 100%
• Transport Package: in Bundle, Plywood Case, Woven Bag or as Request
• Specification: 1/2"-24"
• Trademark: KM
• Origin: China Mainland
• HS Code: 73044190
• Production Capacity: 1500ton/Month

Product Description

ASTM A312 TP321 Seamless Stainless Pipe Ti 

The grade 321 stainless steel pipe is austenitic steel that is stabilized with titanium. The titanium stabilization provides the material with good corrosion resistance. The Titanium also limits the usage as welding consumable because Titanium does not transfer well over an electric arc welding procedure. So working with heat has limitations on this product.

However, annealing is available as a means of treating this material for extra corrosion resistance. Annealing is performed by heating up the material up to 1065 degrees Celsius and then water quenching it. This provides maximum corrosion resistance to the products made up this material. In addition to the annealing procedure, the hot bending operation could be performed in the range of 950 -1100 degrees Celsius.

This is not actually a heat treatment to increase any mechanical properties but soon after the hot bending, annealing is performed to make sure that the corrosion resistance properties are restored. The annealing also provides the material with less intergranular corrosion during welding. An oxide layer forms on the surface of the AISI 321 pipe after annealing which acts as a coating against oxidation reactions. Some types of finishing are also available to protect the surface in addition to the heat treatment.

Chemical Composition

Ni	9 - 12
Cr	17 - 19
C	0.08 max
N	0.10 max
Fe	Balance
Mn	2 max
Si	0.75 max
S	0.03 max
P	0.045 max
Ti	5xC min 0.60% max

Mechanical Properties

Density	8.0 g/cm3
Melting Point	1454 °C (2650 °F)
Tensile Strength	Psi - 75000 , MPa - 515
Yield Strength (0.2%Offset)	Psi - 30000 , MPa - 205
Elongation	35 %

Outer Diameter: 1/2"-24"
Wall Thickness: Sch5s-Sch160S, XS, XXS
Length: 5.8meter, 6m, 11.8m, 12m or as request

Standard:
ASTM A213, A312, ASTM A269, ASTM A778, ASTM A789, DIN 17456,
DIN17457, DIN 17459, JIS G3459, JIS G3463, GOST9941, EN10216, 
BS3605

Material: 304, 304L, 304H, 316, 316L, 321, 310S, 904L, 2205, S1803, 347H, 317L, 316Ti 

Surface Treatment: Pickled & Annealed & Polish&Mirror
Ends: Plain ends or beveled ends