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Introduction
ASTM A376 /
A376M covers seamless austenitic stainless steel pipes specifically designed
for high-temperature central-station service applications. These pipes are
manufactured to withstand elevated temperatures, pressure conditions, and
corrosive environments commonly found in power generation and industrial
processing systems.
ASTM A376
stainless steel pipes are widely used in power plants and heat-intensive
industries where long-term reliability and high-temperature strength are
essential.
Ladhani
Metal Corporation is a manufacturer, supplier, and exporter of ASTM A376 /
A376M stainless steel pipes, supplying high-quality seamless pipes for critical
high-temperature applications.
Applicable Standard
Standard
Specification: ASTM A376 / A376M
Organization: ASTM International
Title: Standard Specification for Seamless Austenitic Steel Pipe for
High-Temperature Central-Station Service
This
specification covers seamless stainless steel pipes for high-temperature and
pressure applications in central-station service.
Forms of Supply
ASTM A376
stainless steel pipes are supplied in the following forms:
Seamless
pipes
Hot finished pipes
Cold drawn pipes
Cut-to-length pipes
Supply
Condition
Solution
annealed
Heat-treated condition
Pickled and passivated
Surface
Finish
Mill finish
Annealed and pickled
Polished finish (if required)
Standard
Sizes
Outside
Diameter: 6 mm to 610 mm
Wall Thickness: 1 mm to 50 mm
Length: Up to 12 meters or as required
Grades Covered Under ASTM A376 / A376M
TP304
TP304H
TP316
TP321
TP347H
These grades
are austenitic stainless steels offering excellent high-temperature strength
and corrosion resistance.
Chemical Composition of ASTM A376 Stainless Steel
Pipes (%)
|
Grade |
Carbon |
Manganese max |
Phosphorus max |
Sulfur max |
Silicon max |
Nickel |
Chromium |
Molybdenum |
Titanium |
Columbium |
Tantalum |
Nitrogen |
Others |
|
TP304 |
0.08
max |
2.00 |
0.045 |
0.030 |
0.75 |
8.0–11.0 |
18.0–20.0 |
— |
— |
— |
— |
— |
— |
|
TP304H |
0.04–0.10 |
2.00 |
0.045 |
0.030 |
0.75 |
8.0–11.0 |
18.0–20.0 |
— |
— |
— |
— |
— |
— |
|
TP304HN |
0.08
max |
2.00 |
0.045 |
0.030 |
0.75 |
8.0–11.0 |
18.0–20.0 |
— |
— |
— |
— |
0.10–0.16 |
— |
|
TP304LN |
0.035
max |
2.00 |
0.045 |
0.030 |
0.75 |
8.0–11.0 |
18.0–20.0 |
— |
— |
— |
— |
0.10–0.16 |
— |
|
TP316 |
0.08
max |
2.00 |
0.045 |
0.030 |
0.75 |
11.0–14.0 |
16.0–18.0 |
2.00–3.00 |
— |
— |
— |
— |
— |
|
TP316H |
0.04–0.10 |
2.00 |
0.045 |
0.030 |
0.75 |
11.0–14.0 |
16.0–18.0 |
2.00–3.00 |
— |
— |
— |
— |
— |
|
TP316N |
0.08
max |
2.00 |
0.045 |
0.030 |
0.75 |
11.0–14.0 |
16.0–18.0 |
2.00–3.00 |
— |
— |
— |
0.10–0.16 |
— |
|
TP316LN |
0.035
max |
2.00 |
0.045 |
0.030 |
0.75 |
11.0–14.0 |
16.0–18.0 |
2.00–3.00 |
— |
— |
— |
0.10–0.16 |
— |
|
TP321 |
0.08
max |
2.00 |
0.045 |
0.030 |
0.75 |
9.0–13.0 |
17.0–19.0 |
— |
B |
— |
— |
— |
— |
|
TP321H |
0.04–0.10 |
2.00 |
0.045 |
0.030 |
0.75 |
9.0–13.0 |
17.0–19.0 |
— |
C |
— |
— |
— |
— |
|
TP347 |
0.08
max |
2.00 |
0.045 |
0.030 |
0.75 |
9.0–13.0 |
17.0–19.0 |
— |
— |
D |
— |
— |
— |
|
TP347H |
0.04–0.10 |
2.00 |
0.045 |
0.030 |
0.75 |
9.0–13.0 |
17.0–19.0 |
— |
— |
E |
— |
— |
— |
|
TP348 |
0.08
max |
2.00 |
0.045 |
0.030 |
0.75 |
9.0–13.0 |
17.0–19.0 |
— |
— |
B |
0.10 |
— |
Co
0.20 max |
|
18-8H |
0.05–0.10 |
2.00 |
0.045 |
0.030 |
0.75 |
7.5–9.5 |
14.5–16.5 |
1.50–2.00 |
— |
— |
— |
— |
— |
Additional Details
• Specification: ASTM A376 / A376M
• Product Type: Seamless Austenitic Steel Pipe for High-Temperature Service
• Values shown are percentage composition limits by weight.
• “max” indicates maximum permissible content.
• Nitrogen-added grades provide enhanced strength and corrosion resistance.
• Molybdenum-bearing grades such as TP316 improve resistance to pitting and
chloride corrosion.
• Stabilized grades TP321 and TP347 are designed for improved intergranular
corrosion resistance at elevated temperatures.
ASTM
A376 / A376M – Tensile Requirements
|
Grade |
Tensile Strength min ksi [MPa] |
Yield Strength min ksi [MPa] |
Elongation in 2 in. or 50 mm
(or 4D) min % Longitudinal |
Elongation in 2 in. or 50 mm
(or 4D) min % Transverse |
|
TP304,
TP304H, TP304LN, TP316, TP316H, TP316LN, TP347, TP347H, TP348, 16-8-2H,
S31725 |
75
[515] |
30
[205] |
35 |
25 |
|
TP304N,
TP316N, S31726 |
80
[550] |
35
[240] |
35 |
25 |
|
S34565 |
115
[790] |
60
[415] |
35 |
30 |
|
TP321,
TP321H ≤ 3/8 in. |
75
[515] |
30
[205] |
35 |
25 |
|
TP321,
TP321H > 3/8 in. |
70
[480] |
25
[170] |
35 |
25 |
Additional Details
• Specification: ASTM A376 / A376M
• Product Type: Seamless Austenitic Stainless Steel Pipe for High-Temperature
Service
Key Features of ASTM A376 Stainless Steel Pipes
Excellent
high-temperature strength
Superior oxidation and corrosion resistance
Good creep resistance
Reliable performance under pressure
Long service life in elevated temperature applications
Excellent weldability and formability
Applications of ASTM A376 Stainless Steel Pipes
ASTM A376
pipes are widely used in industries requiring high-temperature and pressure
resistance.
Power Plants
• Superheater piping
• Steam pipelines
Petrochemical
Industry
• High-temperature process piping
• Heat-resistant systems
Industrial
Boilers
• Boiler piping systems
• Heat transfer piping
Refineries
• Process lines
• Corrosive fluid handling systems
Heat Treatment
Pipes are
solution annealed to improve corrosion resistance
Heat treatment enhances toughness and ductility
Ensures uniform microstructure and high-temperature performance
Conclusion
ASTM A376 /
A376M stainless steel pipes provide a reliable solution for high-temperature
central-station service applications. With excellent strength, corrosion
resistance, and durability, these pipes are ideal for power plants, refineries,
and industrial heating systems.
Ladhani
Metal Corporation supplies ASTM A376 / A376M stainless steel pipes in various
grades and sizes, ensuring high-quality products for critical high-temperature
industrial applications.
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 - Chemical Composition, Sizes & Applications){kind=link}