TP321 Cold Drawn Seamless Steel Tube , Seamless Stainless Tube ASTM A213

Cold Drawn Annealed Seamless Stainless Steel Heater Tubes TP321 ASTM A213 & ASME SA213

SA-213-TP321 Seamless ferritic and austenitic alloy steel boiler, superheater, and heat exchanger tubes.

Chemical Properties:

Carbon: 0.08 max.

Silicon: 0.75 max.

Manganese: 2.00

Nickel: 9.00-13.0

Potassium: 0.04

Chromium: 17.0-20.0

Sulfur: 0.03 Molybdenum: n/a

Mechanical Properties:

Tensile Strength: ksi: 75 MPa: 517

Elongation in 2in. or 50mm, min. :35 Max.

Hardness Rockwell B: 90

Alloy 321 (UNS S32100) is a titanium stabilized austenitic stainless steel with good general corrosion resistance. It has excellent resistance to intergranular corrosion after exposure to temperatures in the chromium carbide precipitation range of 800–1500°F (427–816°C). The alloy resists oxidation to 1500°F (816°C) and has higher creep and stress rupture properties than alloys 304 and 304L. It also possesses good low temperature toughness. Alloy 321H (UNS S32109) is the higher carbon (0.04–0.10) version of the alloy. It was developed for enhanced creep resistance and for higher strength at temperatures above 1000°F (537°C). In most instances, the carbon content of the plate enables dual certification. Alloy 321 cannot be hardened by heat treatment, only by cold working. It can be easily welded and processed by standard shop fabrication practices.

Description:
 

 
Available Tube Product Forms:
 
Straight.

Annealed & Pickled.

 
 
Quality Assurance:
 
Spezilla's 321 seamless heat exchanger stainless steel tubes are produced acc. to the following process and inspection to assure our quality:
 
1. Chemical Composition Analysis Test With 100% PMI.
 
2. Solution Annealing / Bright Annealed.
 
3. 100% Hydrostatic Test and 100% Eddy Current Test
 
4. Mechanical Tests includes Tension Test, Flattening Test, Flaring Test, Hardness Test.
 
5. Impact Test subject to Standard request.
 
6. Grain Size Test and Intergranular Corrosion Test.
 
7. Visual Test and Endoscope Test for Surface Quality Test

 
Typical Applications:
 

Falling Film Evapotators

Condensers

Tube and Shell Heat exchangers
 
Typical Manufacturing Specifications:

 
ASME SA213

ASTM A213

ASTM A269
 
EN10216-5
 
Also individual customer specifications.