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Introduction
ASTM A632
covers seamless and welded austenitic stainless steel tubing intended for
general corrosion-resistant and low-temperature service applications. These
tubes are manufactured from high-quality stainless steel grades and offer
excellent corrosion resistance, durability, strength, and fabrication
characteristics.
ASTM A632
stainless steel tubes are widely used in chemical processing, food processing,
pharmaceutical equipment, instrumentation systems, heat exchangers, condensers,
hydraulic systems, and various industrial applications where corrosion
resistance and cleanliness are essential requirements.
The
specification includes a variety of austenitic stainless steel grades suitable
for applications involving corrosive environments, low-temperature conditions,
and precision engineering requirements. These tubes provide reliable
performance, excellent surface quality, and long service life across a broad
range of industrial sectors.
Ladhani
Metal Corporation is a manufacturer, supplier, and exporter of ASTM A632
Stainless Steel Tubes, supplying premium-quality seamless and welded stainless
steel tubing for industrial, commercial, and engineering applications
worldwide.
Applicable Standard
Standard
Specification: ASTM A632
Organization:
ASTM International
Title:
Standard Specification for Seamless and Welded Austenitic Stainless Steel
Tubing (Small-Diameter) for General Service
This
specification covers grades of seamless and welded stainless steel tubing
intended for general corrosion-resistant and low-temperature service.
Forms of Supply
ASTM A632
stainless steel products are supplied in the following forms:
•
Seamless stainless steel tubes
• Welded stainless steel tubes
• Instrumentation tubes
• Hydraulic tubes
• Heat exchanger tubes
• Condenser tubes
• Precision tubes
• Bright annealed tubes
• Cold drawn tubes
• U-bend tubes
• Straight length tubes
• Custom fabricated tubes
Grades Covered Under
ASTM A632
• TP304
• TP304L
• TP316
• TP316L
• TP321
• TP347
• TP348
Other
austenitic stainless steel grades may be supplied according to customer
requirements and applicable specifications.
Supply Condition
• Cold
drawn
• Annealed
• Solution annealed
• Bright annealed
• Pickled and passivated
• Straightened and cleaned
Surface Finish
• Bright
annealed finish
• Mill finish
• Pickled finish
• Passivated finish
• Polished finish
• Smooth clean surface finish
Standard Sizes
Tubes
Outside
Diameter: 3.2 mm to 76.2 mm
Wall
Thickness: 0.4 mm to 6.35 mm
Length:
Up to 12000 mm
Custom
sizes, wall thicknesses, and cut lengths are available according to customer
specifications.
Chemical Composition
of ASTM A632 Stainless Steel Tubes
(Composition, %)
|
Element |
TP 304 |
TP 304L |
TP 310 |
TP 316 |
TP 316L |
TP 317 |
TP 321 |
TP 347 |
TP 348 |
|
UNS Designation |
S30400 |
S30403 |
S31000 |
S31600 |
S31603 |
S31700 |
S32100 |
S34700 |
S34800 |
|
Carbon, max |
0.08 |
0.030 |
0.15 |
0.08 |
0.030 |
0.08 |
0.08 |
0.08 |
0.08 |
|
Manganese, max |
2.00 |
2.00 |
2.00 |
2.00 |
2.00 |
2.00 |
2.00 |
2.00 |
2.00 |
|
Phosphorus, max |
0.045 |
0.045 |
0.045 |
0.045 |
0.045 |
0.045 |
0.045 |
0.045 |
0.045 |
|
Sulfur, max |
0.030 |
0.030 |
0.030 |
0.030 |
0.030 |
0.030 |
0.030 |
0.030 |
0.030 |
|
Silicon, max |
0.75 |
0.75 |
0.75 |
0.75 |
0.75 |
0.75 |
0.75 |
0.75 |
0.75 |
|
Nickel |
8.0–11.0 |
8.0–13.0 |
19.0–22.0 |
11.0–14.0 |
10.0–15.0 |
11.0–14.0 |
9.0–13.0 |
9.0–13.0 |
9.0–13.0 |
|
Chromium |
18.0–20.0 |
18.0–20.0 |
24.0–26.0 |
16.0–18.0 |
16.0–18.0 |
18.0–20.0 |
17.0–20.0 |
17.0–20.0 |
17.0–20.0 |
|
Molybdenum |
— |
— |
— |
2.00–3.00 |
2.00–3.00 |
3.00–4.00 |
— |
— |
— |
|
Titanium |
— |
— |
— |
— |
— |
— |
D |
— |
— |
|
Columbium +
Tantalum |
— |
— |
— |
— |
— |
— |
— |
E |
E |
|
Tantalum, max |
— |
— |
— |
— |
— |
— |
— |
— |
0.10 |
|
Note |
Description |
|
A |
New
designation established in accordance with Practice E527 and SAE J1086,
Practice for Numbering Metals and Alloys (UNS). |
|
B |
For
seamless TP316L tubes, the silicon maximum shall be 1.00%. |
|
C |
For
welded TP316 tubes, the nickel range shall be 10.0–14.0%. |
|
D |
Grade
TP321 shall have a titanium content of not less than five times the carbon
content and not more than 0.60%. |
|
E |
Grades
TP347 and TP348 shall have a columbium plus tantalum content of not less than
ten times the carbon content and not more than 1.0%. |
Mechanical Properties of ASTM A632 Stainless Steel
Tubes
|
Grade |
Tensile Strength
(MPa) Min |
Yield Strength
(MPa) Min |
Elongation (%)
Min |
|
TP304 |
515 |
205 |
35 |
|
TP304L |
485 |
170 |
35 |
|
TP316 |
515 |
205 |
35 |
|
TP316L |
485 |
170 |
35 |
Mechanical
properties may vary depending on manufacturing condition and tube dimensions.
Key Features of ASTM
A632 Stainless Steel Tubes
•
Excellent corrosion resistance
• Superior low-temperature performance
• High durability and reliability
• Excellent weldability
• Good formability and machinability
• Smooth internal and external surfaces
• High cleanliness standards
• Good pressure handling capability
• Long service life
• Low maintenance requirements
Applications of ASTM
A632 Stainless Steel Tubes
Chemical Processing Industry
•
Chemical transfer systems
• Process equipment
• Storage systems
• Corrosion-resistant piping
Food and Beverage Industry
• Food
processing equipment
• Dairy systems
• Beverage production lines
• Hygienic tubing systems
Pharmaceutical Industry
• Process
equipment
• Sterile fluid systems
• Cleanroom installations
• Production facilities
Instrumentation Industry
•
Instrument tubing
• Control lines
• Sampling systems
• Precision fluid handling systems
Heat Transfer Equipment
• Heat
exchangers
• Condensers
• Cooling systems
• Thermal processing equipment
Industrial Applications
•
Hydraulic systems
• Pneumatic systems
• Process piping
• Engineering equipment
Fabrication and
Welding
ASTM A632
stainless steel tubing offers excellent fabrication characteristics.
•
Suitable for TIG welding and orbital welding
• Excellent cold-forming properties
• Good bending characteristics
• Easy machining and fabrication
• Suitable for precision engineering applications
• Excellent dimensional accuracy
Appropriate
welding procedures should be followed to preserve corrosion resistance and
mechanical properties.
Heat Treatment
ASTM A632
tubes are generally supplied in annealed or solution-annealed conditions.
•
Solution annealing improves corrosion resistance
• Bright annealing provides superior surface finish
• Controlled cooling enhances structural uniformity
• Heat treatment improves ductility and formability
• Stress relieving may be performed when required
Advantages of ASTM
A632 Stainless Steel Tubes
•
Excellent resistance to corrosion and oxidation
• Outstanding performance at low temperatures
• High strength and durability
• Superior surface finish quality
• Easy fabrication and installation
• Excellent hygienic properties
• Long operational life
• Low maintenance costs
• Suitable for critical service applications
• Cost-effective stainless steel tubing solution
Conclusion
ASTM A632
Stainless Steel Tubes provide excellent corrosion resistance, strength,
cleanliness, and low-temperature performance for a wide range of industrial and
commercial applications. Their superior fabrication characteristics and long
service life make them suitable for chemical processing, pharmaceutical
manufacturing, food processing, instrumentation systems, heat exchangers, and
precision engineering installations.
Ladhani Metal Corporation
supplies ASTM A632 stainless steel tubes in various grades, sizes, and
customized specifications, delivering reliable tubing solutions for industrial,
commercial, and engineering projects worldwide.
FOR REQUIREMENT OF THIS GRADE
OR FOR DETAIL CONTACT US AT :-
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