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Introduction
ASTM A336 /
A336M covers alloy steel forgings intended for pressure and high-temperature
service, especially in applications such as turbines, valves, flanges, and
fittings. These forgings are designed to deliver excellent strength, creep
resistance, and durability under elevated temperature and pressure conditions.
ASTM A336
alloy steel forgings are widely used in critical industries where performance,
safety, and long service life are essential.
Ladhani
Metal Corporation is a manufacturer, supplier, and exporter of ASTM A336 /
A336M alloy steel forgings, supplying high-quality forged components for
demanding industrial applications.
Applicable Standard
Standard
Specification: ASTM A336 / A336M
Organization: ASTM International
Title: Standard Specification for Alloy Steel Forgings for Pressure and
High-Temperature Parts
This
specification covers alloy steel forgings for use in high-temperature and
pressure applications.
Forms of Supply
ASTM A336
alloy steel forgings are supplied in the following forms:
Forged
flanges
Forged shafts
Forged rings
Forged discs
Custom-shaped forgings
Supply
Condition
Normalized
and tempered
Quenched and tempered
Annealed condition
Surface
Finish
Black
surface
Rough machined
Shot blasted
Machined finish (if required)
Standard
Sizes
Diameter: Up
to 3000 mm
Thickness: Up to 1000 mm
Weight: As per requirement
(Custom
sizes available as per drawings)
Grades Covered Under ASTM A336 / A336M
F1
F5
F9
F11
F22
F91
These grades
are chromium-molybdenum alloy steels offering excellent high-temperature
strength and resistance to creep and oxidation.
Chemical Composition of ASTM A336 Alloy Steel Forgings
(%)
Chemical
Composition Table (Grades F1 to F6)
|
Element |
F1 |
F11 (Cl 2,3) |
F11 (Cl 1) |
F12 |
F5A |
F5AA |
F9 |
F6 |
|
Carbon |
0.20–0.30 |
0.10–0.20 |
0.05–0.15 |
0.10–0.20 |
0.15 max |
0.25 max |
0.15 max |
0.12 max |
|
Manganese |
0.60–0.80 |
0.30–0.80 |
0.30–0.60 |
0.30–0.80 |
0.30–0.60 |
0.60 max |
0.30–0.60 |
1.00 max |
|
Phosphorus (max) |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
|
Sulfur (max) |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
|
Silicon |
0.20–0.35 |
0.50–1.00 |
0.50–1.00 |
0.10–0.60 |
0.50 max |
0.50 max |
0.50–1.00 |
1.00 max |
|
Nickel |
— |
— |
— |
0.50 max |
0.50 max |
— |
0.50 max |
— |
|
Chromium |
— |
1.00–1.50 |
1.00–1.50 |
0.80–1.10 |
4.0–6.0 |
4.0–6.0 |
8.0–10.0 |
11.5–13.5 |
|
Molybdenum |
0.40–0.60 |
0.45–0.65 |
0.44–0.65 |
0.45–0.65 |
0.45–0.65 |
0.45–0.65 |
0.90–1.10 |
— |
Chemical Composition Table (Grades F21 & F22)
|
Element |
F21 (Cl 1,3) |
F22 (Cl 1,3) |
|
Carbon |
0.05–0.15 |
0.05–0.15 |
|
Manganese |
0.30–0.60 |
0.30–0.60 |
|
Phosphorus (max) |
0.025 |
0.025 |
|
Sulfur (max) |
0.025 |
0.025 |
|
Silicon |
0.50 max |
0.50 max |
|
Nickel |
— |
— |
|
Chromium |
2.7–3.3 |
2.00–2.50 |
|
Molybdenum |
0.80–1.06 |
0.90–1.10 |
Chemical
Composition Table (Advanced Grades)
|
Element |
F91 |
F911 |
F3V |
F3VCb |
F22V |
|
Carbon |
0.08–0.12 |
0.09–0.13 |
0.10–0.15 |
0.10–0.15 |
0.11–0.15 |
|
Manganese |
0.30–0.60 |
0.30–0.60 |
0.30–0.60 |
0.30–0.60 |
0.30–0.60 |
|
Phosphorus (max) |
0.025 |
0.020 |
0.020 |
0.020 |
0.015 |
|
Sulfur (max) |
0.025 |
0.010 |
0.020 |
0.010 |
0.010 |
|
Silicon |
0.20–0.50 |
0.10–0.50 |
0.10 max |
0.10 max |
0.10 max |
|
Nickel |
0.40 max |
0.40 max |
— |
0.25 max |
0.25 max |
|
Chromium |
8.0–9.5 |
8.5–10.5 |
2.7–3.3 |
2.7–3.3 |
2.00–2.50 |
|
Molybdenum |
0.85–1.05 |
0.90–1.10 |
0.90–1.10 |
0.90–1.10 |
0.90–1.10 |
|
Vanadium |
0.18–0.25 |
0.18–0.25 |
0.20–0.30 |
0.20–0.30 |
0.25–0.35 |
|
Columbium (Nb) |
0.06–0.10 |
0.06–0.10 |
— |
0.015–0.070 |
0.07 max |
|
Nitrogen |
0.03–0.07 |
0.04–0.09 |
— |
— |
— |
|
Aluminum |
0.04 max |
0.04 max |
— |
— |
— |
|
Boron |
— |
0.0003–0.006 |
0.001–0.003 |
— |
0.0020 max |
|
Tungsten |
— |
0.90–1.10 |
— |
— |
— |
|
Titanium |
— |
— |
0.015–0.035 |
0.015 max |
0.030 max |
|
Copper |
— |
— |
— |
0.25 max |
0.20 max |
|
Calcium |
— |
— |
— |
0.0005–0.0150 |
0.015 max |
Notes:
- “max”
= maximum allowable percentage
- “—”
= not specified
- Cb
= Columbium (Niobium)
Key Features of ASTM A336 Alloy Steel Forgings
Excellent
high-temperature strength
Superior creep resistance
Good resistance to oxidation and thermal stress
High durability under pressure conditions
Suitable for critical components
Long service life in demanding environments
Applications of ASTM A336 Alloy Steel Forgings
ASTM A336 forgings are widely used in industries requiring high-temperature and
pressure resistance.
Power Plants
• Turbine rotors
• Steam components
Oil &
Gas Industry
• High-pressure flanges
• Refinery equipment
Petrochemical
Industry
• Process equipment
• Heat-resistant components
Industrial
Applications
• Valves and fittings
• Heavy-duty machinery parts
Heat Treatment
Forgings are
typically normalized and tempered or quenched and tempered
Heat treatment improves strength, creep resistance, and toughness
Ensures uniform microstructure and reliable performance
Conclusion
ASTM A336 /
A336M alloy steel forgings provide a dependable solution for high-temperature
and pressure applications. With chromium-molybdenum alloy compositions, these
forgings offer excellent strength, durability, and resistance to extreme
operating conditions.
Ladhani Metal Corporation supplies ASTM A336 / A336M alloy steel forgings in various grades and sizes, ensuring high-quality products for power plants, refineries, and industrial engineering applications.
FOR REQUIREMENT OF THIS GRADE OR FOR DETAIL CONTACT US AT :-
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