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Introduction
ASTM A554
covers welded stainless steel mechanical tubing intended for mechanical,
structural, ornamental, and architectural applications. These tubes are
manufactured from stainless steel strip or sheet and are formed and welded to
provide excellent corrosion resistance, dimensional accuracy, surface finish,
and mechanical performance.
ASTM A554
stainless steel tubing is widely used in architectural structures, handrails,
furniture, automotive components, food processing equipment, decorative
applications, industrial machinery, and engineering projects. The specification
covers round, square, rectangular, and special-shaped tubing for both
decorative and structural purposes.
Ladhani
Metal Corporation is a manufacturer, supplier, and exporter of ASTM A554
stainless steel mechanical tubing, supplying high-quality welded stainless
steel tubes for industrial, commercial, and architectural applications
worldwide.
Applicable Standard
Standard
Specification: ASTM A554
Organization:
ASTM International
Title:
Standard Specification for Welded Stainless Steel Mechanical Tubing
This
specification covers welded stainless steel mechanical tubing for ornamental,
structural, mechanical, and decorative applications.
Forms of Supply
ASTM A554
tubing is supplied in the following forms:
- Round tubes
- Square tubes
- Rectangular tubes
- Oval tubes
- Slot tubes
- Decorative tubes
- Mechanical tubing
- Structural tubing
- Polished tubes
- Mirror finish tubes
- Satin finish tubes
- Brushed finish tubes
- Cut-to-length tubes
- Customized fabricated tubing
Grades Covered Under ASTM A554
- MT 201
- MT 202
- MT 304
- MT 304L
- MT 316
- MT 316L
- MT 321
- MT 409
- MT 430
Supply Condition
- Welded
- Cold finished
- Annealed
- Pickled and passivated
- Polished condition
- Bright finished condition
Surface Finish
- Mill finish
- No. 4 Satin finish
- 180 Grit finish
- 240 Grit finish
- 320 Grit finish
- Hairline finish
- Mirror finish
- Bright polished finish
- Matte finish
- Brushed finish
Standard Sizes
Outside
Diameter: 6 mm to 203.2 mm
Square
Size: 10 mm x 10 mm to 200 mm x 200 mm
Rectangular
Size: 20 mm x 10 mm to 300 mm x 100 mm
Wall
Thickness: 0.5 mm to 6.0 mm
Length:
Up to 6 meters and custom lengths
Chemical Composition of ASTM A554 Stainless Steel Tubing (%)
Austenitic
Grades
|
Grade |
Carbon Max (%) |
Manganese Max (%) |
Phosphorus Max
(%) |
Sulfur Max (%) |
Silicon Max (%) |
Nickel (%) |
Chromium (%) |
Molybdenum (%) |
Titanium (%) |
Columbium +
Tantalum (%) |
|
MT-301 |
0.15 |
2.00 |
0.040 |
0.030 |
1.00 |
6.0–8.0 |
16.0–18.0 |
— |
— |
— |
|
MT-302 |
0.15 |
2.00 |
0.040 |
0.030 |
1.00 |
8.0–10.0 |
17.0–19.0 |
— |
— |
— |
|
MT-304 |
0.08 |
2.00 |
0.040 |
0.030 |
1.00 |
8.0–11.0 |
18.0–20.0 |
— |
— |
— |
|
MT-304L |
0.035A |
2.00 |
0.040 |
0.030 |
1.00 |
8.0–13.0 |
18.0–20.0 |
— |
— |
— |
|
MT-305 |
0.12 |
2.00 |
0.040 |
0.030 |
1.00 |
10.0–13.0 |
17.0–19.0 |
— |
— |
— |
|
MT-309S |
0.08 |
2.00 |
0.040 |
0.030 |
1.00 |
12.0–15.0 |
22.0–24.0 |
— |
— |
— |
|
MT-309SCb |
0.08 |
2.00 |
0.040 |
0.030 |
1.00 |
12.0–15.0 |
22.0–24.0 |
— |
— |
B |
|
MT-310S |
0.08 |
2.00 |
0.040 |
0.030 |
1.00 |
19.0–22.0 |
24.0–26.0 |
— |
— |
— |
|
MT-316 |
0.08 |
2.00 |
0.040 |
0.030 |
1.00 |
10.0–14.0 |
16.0–18.0 |
2.0–3.0 |
— |
— |
|
MT-316L |
0.035A |
2.00 |
0.040 |
0.030 |
1.00 |
10.0–15.0 |
16.0–18.0 |
2.0–3.0 |
— |
— |
|
MT-317 |
0.08 |
2.00 |
0.040 |
0.030 |
1.00 |
11.0–14.0 |
18.0–20.0 |
3.0–4.0 |
— |
— |
|
MT-321 |
0.08 |
2.00 |
0.040 |
0.030 |
1.00 |
9.0–13.0 |
17.0–20.0 |
— |
C |
— |
|
MT-330 |
0.15 |
2.00 |
0.040 |
0.030 |
1.00 |
33.0–36.0 |
14.0–16.0 |
— |
— |
— |
|
MT-347 |
0.08 |
2.00 |
0.040 |
0.030 |
1.00 |
9.0–13.0 |
17.0–20.0 |
— |
— |
B |
Ferritic
Grades
|
Grade |
Carbon Max (%) |
Manganese Max (%) |
Phosphorus Max
(%) |
Sulfur Max (%) |
Silicon Max (%) |
Nickel (%) |
Chromium (%) |
Molybdenum (%) |
Titanium (%) |
Columbium +
Tantalum (%) |
|
MT-429 |
0.12 |
1.00 |
0.040 |
0.030 |
1.00 |
0.50 Max |
14.0–16.0 |
— |
— |
— |
|
MT-430 |
0.12 |
1.00 |
0.040 |
0.030 |
1.00 |
0.50 Max |
16.0–18.0 |
— |
— |
— |
|
MT-430Ti |
0.10 |
1.00 |
0.040 |
0.030 |
1.00 |
0.075 Max |
16.0–19.5 |
— |
5 × C min, 0.75 max |
— |
|
Footnote |
Requirement: |
|
A |
For
MT-304L and MT-316L, carbon shall be 0.040% max for small-diameter or
thin-wall tubing where multiple drawing passes are required. |
|
B |
Columbium
+ Tantalum content shall be at least 10 × carbon content and not more than
1.00%. Applies to MT-309SCb and MT-347. |
|
C |
Titanium
content in MT-321 shall be not less than 5 × carbon content and not more than
0.60%. |
Mechanical Properties of ASTM A554 Tubing
|
Grade |
Tensile Strength
(MPa) Min |
Yield Strength
(MPa) Min |
Elongation (%)
Min |
|
201 |
515 |
275 |
40 |
|
202 |
515 |
275 |
40 |
|
304 |
515 |
205 |
35 |
|
304L |
485 |
170 |
35 |
|
316 |
515 |
205 |
35 |
|
316L |
485 |
170 |
35 |
|
321 |
515 |
205 |
35 |
|
409 |
380 |
170 |
20 |
|
430 |
450 |
205 |
22 |
Key Features of ASTM A554 Stainless Steel Tubing
- Excellent corrosion resistance
- Attractive surface appearance
- Superior dimensional accuracy
- Excellent weldability
- High strength and durability
- Good formability
- Easy fabrication and installation
- Low maintenance requirements
- Hygienic and easy-to-clean surfaces
- Long service life
Applications of ASTM A554 Stainless Steel Tubing
Architectural Industry
- Handrails
- Balustrades
- Staircase railings
- Building facades
- Decorative structures
Furniture Industry
- Stainless steel furniture
- Tables and chairs
- Display systems
- Decorative frames
Construction Industry
- Structural frameworks
- Support structures
- Commercial buildings
- Public infrastructure
Food Processing Industry
- Processing equipment
- Hygienic structures
- Food handling systems
- Storage equipment
Automotive Industry
- Exhaust systems
- Trim components
- Decorative accessories
- Structural parts
Industrial Applications
- Machinery components
- Fabricated assemblies
- Equipment frames
- Mechanical structures
Fabrication and Welding
ASTM A554
stainless steel tubing offers excellent fabrication characteristics.
- Suitable for TIG welding
- Suitable for MIG welding
- Good bending properties
- Easy machining and fabrication
- Excellent polishing characteristics
- Suitable for cutting and forming
operations
- Compatible with structural
fabrication processes
Heat Treatment
ASTM A554
tubing is generally supplied in the welded and annealed condition.
- Annealing improves ductility
- Heat treatment relieves residual
stresses
- Improves corrosion resistance
- Enhances fabrication characteristics
- Maintains dimensional stability
Advantages of ASTM A554 Stainless Steel Tubing
- Excellent appearance and aesthetics
- Superior corrosion resistance
- High strength-to-weight ratio
- Easy maintenance
- Excellent durability
- Long service life
- Recyclable material
- Hygienic surface properties
- Cost-effective lifecycle
performance
- Suitable for indoor and outdoor
applications
Conclusion
ASTM A554
stainless steel mechanical tubing is a versatile welded tubing product designed
for structural, mechanical, ornamental, and architectural applications.
Available in grades such as 201, 202, 304, 304L, 316, 316L, 321, 409, and 430,
these tubes provide excellent corrosion resistance, attractive surface finishes,
and reliable mechanical properties.
Ladhani Metal Corporation
supplies ASTM A554 stainless steel tubing in round, square, rectangular, and
customized profiles with various surface finishes, ensuring premium-quality
solutions for architectural, industrial, commercial, and engineering applications
worldwide.
FOR REQUIREMENT OF THIS GRADE
OR FOR DETAIL CONTACT US AT :-
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