ASME SA312 TP321 Pipe

1. Standard: ASTM A312, ASME SA312
2. Size: 1/2''~48''
3. Thickness: SCH5~SCHXXS
4. Service: Cutting, Welding, Fabricated, Customized

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Product Introduction

ASME SA312 TP321 is a stabilized austenitic stainless steel alloy containing titanium. This alloy is known for its excellent corrosion resistance, particularly in high-temperature environments. Stainless steel 321 pipes are commonly used in various industries such as petrochemical, chemical processing, power generation, and aerospace due to their ability to withstand high temperatures and corrosive environments. They are often used in applications where resistance to intergranular corrosion and oxidation is crucial.

ASME SA312 UNS S32100 Pipe Applications:

1. Petrochemical Industry
2. Chemical Processing
3. Power Generation
4. Aerospace Industry
5. Pharmaceutical Industry

Specification of ASTM SA312 TP321 Seamless Welded Pipe

ASTM / ASME	ASTM A312 / ASTM SA 312
Standards	ANSI/ASME B36.19M, ANSI/ASME B36.10M
Types and Shapes	Hydraulic, Square, Hex, Honed, Round, Rectangle
Most Common types	100% X Ray Welded, Seamless, CDW, Fabricated, ERW, EFW, Welded
Pipe End Types	Plain One End, Plain Both Ends, Bevel small end, Treaded On End, Beveled end, Bevel one end, Bevel large end, Beveled One End, Treaded Both Ends, Bevel both ends
Technical Conditions	Cold Drawn, Bright Annealed, Annealed and Pickled, Polished
Surface Finishing	2B, No.4, No.1, No.8 Mirror Finish or custom Finish as per customer Requirements
Wall Wall Thickness Schedule	SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS

ASME SA 312 Alloy 321 Stainless Steel Composition Chart

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 Specification of AISI 321 Pipe

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 %

ASME SA312 TP321 Cold Worked Pipe Heat treatment

Annealing involves heating the material to 1065 ℃ and then water quenching it. This provides maximum corrosion resistance to products made from this material. In addition to the annealing process, hot bending operations can also be performed in the range of 950 -1100 ℃.

Flattening Test

For material heat treated in a continuous furnace flattening tests shall be made on a sufficient number of pipes to constitute 5 % of the lot, but in no case less than 2 lengths of pipe.

Hydrostatic or Nondestructive Testing

Each pipe shall be subjected to the nondestructive electric test or the hydrostatic test.

Standard and Certificate

Mill test certificates will be issued according to EN10204.3.
ASTM A312 /A312M Specification. These pipes are manufactured to meet specific standards such as ASTM A312 or ASTM A358, which outline the requirements for seamless or welded austenitic stainless steel pipes.