ASTM A376 TP321 Seamless Austenitic Steel Pipe was originally developed for use for piping in the central stations of electric-power generating thermal plants. However, its use is not restricted to such applications and it may be used in other applications for which the attributes ofthe materials

ASTM A376 TP321 Steel Pipe have lower strength requirements for nominal wall thicknesses greater than 3 ⁄ 8 in. [9.5mm].

ASTM A376 TP321 Austenitic Steel Pipe Quick Details

Company Name: Beite steel pipe

Country/Region: China

Product Name：ASTM A376 TP321 Austenitic Steel Pipe

Manufacture：seamless or welded process,

Outside Diameter：12.7mm——127mm

Wall thickness：0.9mm——12.7mm

Length：6000mm、12000m or specified length as require

Port of Shipment：Tianjin,China

Payment：L/C or T/T

Delivery: 7-15 days after payment

Package: Bundles (hexagonal),Wooden Boxes,Crates (steel/wooden)

Materials and Manufacture

Manufacture—pipe may be either hot finished or cold finished, with a suitable finishing treatment, where necessary.

Heat Treatment

All pipe shall be furnished in the heat-treated condition ,each pipe shall be stenciled “HT-O.”

ASTM A376 TP321 Seamless Austenitic Steel Pipe,heat treatment shall consist of heating to a minimum temperature of 1900 °F [1040 °C] and quenching in water or rapidly cooling by other means.

A solution annealing temperature above 1950 °F [1065°C] may impair the resistance to intergranular corrosion after subsequent exposure to sensitizing conditions in ASTM A376 TP321 Seamless Austenitic Steel Pipe

Chemical Composition

Grade	UNS Designation	Composition, % A
Grade	UNS Designation	Carbon	Manganese	Phosphorus	Sulfur	Silicon	Nickel	Chromium	Titanium
TP321	S32100	0.08	2.00	0.045	0.030	0.75	9.0–13.0	17.0–19.0	B

B： The titanium content shall be not less than five times the carbon content and not more than 0.70 %.

Mechanical Properties

Grade	Tensile A strength, min, ksi [MPa]	Yield strength min,ksi[MPa]	Elongation in 2 in. or 50 mm (or 4D) min, %
Grade	Tensile A strength, min, ksi [MPa]	Yield strength min,ksi[MPa]	Longitudinal	Transverse
TP321
≤0.375 in. [9.50 mm]	75[515]	30[205]	35	25
>0.375 in. [9.50 mm]	70[480]	25[170]	35	25

Hydrostatic or Nondestructive Electric Test

Each pipe shall be subjected to the Nondestructive Electric Test or the Hydrostatic Test. Unless specified by the purchaser, either test may be used at the option ofthe producer.

Hydrostatic Test—Each length of finished pipe shall be subjected to the hydrostatic test in accordance with Specification A999/A999M,

Mechanical Tests Required

Transverse or Longitudinal Tension Test

Flattening Test

Surface Condition

All pipe surfaces shall be free of scale, dirt, grease, paint,or other foreign material that could interfere with interpretation oftest results. The methods used for cleaning and preparing the surfaces for examination shall not be detrimental to the base metal or the surface finish.

Factory Photo