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Introduction
ASTM A182/A182M covers forged or rolled alloy
steel and stainless steel flanges, forged fittings, valves, and parts intended
for high-temperature and high-pressure service. These materials are widely used
in critical applications where strength, corrosion resistance, and durability
are essential.
ASTM A182 flanges are known for their excellent
mechanical properties, resistance to scaling, and ability to perform under
extreme conditions, making them suitable for industries such as oil and gas,
petrochemical, power generation, and chemical processing.
Ladhani Metal Corporation is a manufacturer, supplier, and exporter of ASTM A182/A182M forged steel flanges, offering a wide range of alloy steel and stainless steel grades for industrial piping systems.
Applicable Standard
- Standard Specification: ASTM
A182/A182M
- Organization: ASTM
International
- Title: Standard
Specification for Forged or Rolled Alloy-Steel Pipe Flanges, Forged
Fittings, and Valves and Parts for High-Temperature Service
This specification covers components intended for use in pressure systems operating at elevated temperatures.
Forms and Types of Flanges
ASTM A182 flanges are available in various
types to suit different piping requirements:
- Weld Neck Flanges
- Slip-On Flanges
- Blind Flanges
- Socket Weld Flanges
- Threaded Flanges
- Lap Joint Flanges
Forms of Supply
- Forged flanges
- Machined flanges
- Heat-treated flanges
- Custom-designed flanges
Supply
Conditions
- Annealed (for austenitic
stainless steel)
- Normalized and tempered (for
alloy steel grades)
- Quenched and tempered
Grades Covered Under ASTM
A182/A182M
Stainless Steel
Grades
F304 | F304L | F316 | F316L | F321 | F347
Alloy Steel
Grades
F1 | F5 | F9 | F11 | F12 | F22 | F91
These grades offer a combination of corrosion resistance, high strength, and temperature resistance depending on composition.
Chemical Composition Table
Low
Alloy Steels
|
Grade |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mo |
Other Elements |
|
F1 |
0.28 |
0.6–0.9 |
0.045 |
0.045 |
0.15–0.35 |
0.44–0.65 |
– |
– |
– |
|
F2B |
0.05–0.21 |
0.3–0.8 |
0.04 |
0.04 |
0.1–0.6 |
0.5–0.81 |
– |
0.44–0.65 |
– |
|
F5 |
0.15 |
0.3–0.6 |
0.03 |
0.03 |
0.5 |
4.0–6.0 |
0.5 |
0.44–0.65 |
– |
|
F5a |
0.25 |
0.6 |
0.04 |
0.03 |
0.5 |
4.0–6.0 |
0.5 |
0.44–0.65 |
– |
|
F9 |
0.15 |
0.3–0.6 |
0.03 |
0.03 |
0.5–1 |
8.0–10.0 |
– |
0.9–1.1 |
– |
|
F10 |
0.1–0.2 |
0.5–0.8 |
0.04 |
0.03 |
1–1.4 |
7.0–9.0 |
19–22 |
– |
– |
|
F91 |
0.08–0.12 |
0.3–0.6 |
0.02 |
0.01 |
0.2–0.5 |
8–9.5 |
– |
0.85–1.05 |
N [0.03–0.07], Al [0.02D], Ti [0.01D], Cb
[0.06–0.1], V [0.18–0.25] |
|
F92 |
0.07–0.13 |
0.3–0.6 |
0.02 |
0.01 |
0.5 |
8.5–9.5 |
– |
0.3–0.6 |
N [0.03–0.07], B [0.001–0.006], W [1.5–2.0], V
[0.15–0.25] |
|
F122 |
0.07–0.14 |
0.7 |
0.02 |
0.01 |
0.5 |
10–11.5 |
– |
0.25–0.6 |
N, Cu, W, V |
|
F911 |
0.09–0.13 |
0.3–0.6 |
0.02 |
0.01 |
0.1–0.5 |
8.5–9.5 |
– |
0.9–1.1 |
N, B, W, V |
|
F11 Cl1 |
0.05–0.15 |
0.3–0.6 |
0.03 |
0.03 |
0.5–1.0 |
1–1.5 |
– |
0.44–0.65 |
– |
|
F11 Cl2/3 |
0.1–0.2 |
0.3–0.8 |
0.04 |
0.04 |
0.5–1.0 |
1–1.5 |
– |
0.44–0.65 |
– |
|
F12 Cl1 |
0.05–0.15 |
0.3–0.6 |
0.045 |
0.045 |
0.5 max |
0.8–1.25 |
– |
0.44–0.65 |
– |
|
F12 Cl2 |
0.1–0.2 |
0.3–0.8 |
0.04 |
0.04 |
0.1–0.6 |
0.8–1.25 |
– |
0.44–0.65 |
– |
Ferritic Stainless Steels
|
Grade |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Other |
|
XM-27 |
0.01 |
0.4 |
0.02 |
0.02 |
0.4 |
25–27.5 |
0.5 |
N, Cu, Cb |
|
429 |
0.12 |
1 |
0.04 |
0.03 |
0.75 |
14–16 |
0.5 |
– |
|
430 |
0.12 |
1 |
0.04 |
0.03 |
0.75 |
16–18 |
0.5 |
– |
Austenitic Stainless Steels
|
Grade |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mo |
Other |
|
304 |
0.08 |
2 |
0.045 |
0.03 |
1 |
18–20 |
8–11 |
– |
N |
|
304L |
0.03 |
2 |
0.045 |
0.03 |
1 |
18–20 |
8–13 |
– |
– |
|
304H |
0.04–0.1 |
2 |
0.045 |
0.03 |
1 |
18–20 |
8–11 |
– |
– |
|
309H |
0.04–0.1 |
2 |
0.045 |
0.03 |
1 |
22–24 |
12–15 |
– |
– |
|
310 |
0.25 |
2 |
0.045 |
0.03 |
1 |
24–26 |
19–22 |
– |
– |
|
316 |
0.08 |
2 |
0.045 |
0.03 |
1 |
16–18 |
10–14 |
2–3 |
N |
|
316L |
0.03 |
2 |
0.045 |
0.03 |
1 |
16–18 |
10–15 |
2–3 |
– |
|
317 |
0.08 |
2 |
0.045 |
0.03 |
1 |
18–20 |
11–15 |
3–4 |
– |
|
321 |
0.08 |
2 |
0.045 |
0.03 |
1 |
17–19 |
9–12 |
– |
Ti |
|
347 |
0.08 |
2 |
0.045 |
0.03 |
1 |
17–20 |
9–13 |
– |
Cb |
|
904L |
0.02 |
2 |
0.04 |
0.03 |
1 |
19–23 |
23–28 |
4–5 |
Cu |
Duplex (Ferritic-Austenitic) Stainless Steels
|
Grade |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mo |
Other |
|
F51 |
0.03 |
2 |
0.03 |
0.02 |
1 |
21–23 |
4.5–6.5 |
2.5–3.5 |
N |
|
F53 |
0.03 |
1.2 |
0.035 |
0.02 |
0.8 |
24–26 |
6–8 |
3–5 |
N, Cu |
|
F60 |
0.03 |
2 |
0.03 |
0.02 |
1 |
22–23 |
4.5–6.5 |
3–3.5 |
N |
Notes (As Provided)
A. All values are maximum unless otherwise stated. Where ellipses (...) appear in this table, there is no requirement and analysis for the element need not be determined or reported.
B. Grade F 2 was formerly assigned to the 1 % chromium, 0.5 % molybdenum grade which is now Grade F 12.
C. The present grade F 5a (0.25 max carbon) previous to 1955 was assigned the identification symbol F 5. Identification symbol F 5 in 1955 was assigned to the 0.15 max carbon grade to be consistent with ASTM specifications for other products such as pipe, tubing, bolting, welding fittings, and the like.
D. Applies to both heat and product analyses.
E .For Grade F22V, rare earth metals (REM) may be added in place of calcium, subject to agreement between the producer and the purchaser. In that case the total amount of REM shall be determined and reported.
F. The ratio of Titanium to Nitrogen shall be ≤ 3.5. Alternatively, in lieu of this ratio limit, Grade F23 shall have a minimum hardness of 275 HV (26 HRC, 258 HBW) in the hardened condition.
H. Grade F XM-27Cb shall have a nickel plus copper content of 0.50 max %. Product analysis tolerance over the maximum specified limit for carbon and nitrogen shall be 0.002 %.
I .Grade F 316Ti shall have a titanium content not less than five times the carbon plus nitrogen content and not more than 0.70 %.
J. Grade F 321 shall have a titanium content of not less than five times the carbon content and not more than 0.70 %.
K. Grade F 321H shall have a titanium content of not less than four times the carbon content and not more than 0.70 %.
L. Grades F 347 and F 348 shall have a columbium content of not less than ten times the carbon content and not more than 1.10 %.
M. Grades F 347H and F 348H shall have a columbium content of not less than eight times the carbon content and not more than 1.10 %.
N. Grade F347LN shall have a columbium content of not less than 15 times the carbon content.
O. %Cr + 3.3 × %Mo + 16 × %N = 40 min.
Mechanical Properties Table (ASTM A182/A182M
Forgings)
Low
Alloy Steel Grades
|
Grade |
Tensile
Strength (MPa) |
Yield
Strength (MPa) |
Elongation
(%) |
Reduction
of Area (%) |
Hardness |
|
F1 |
≥
415 |
≥
205 |
≥
30 |
≥
50 |
– |
|
F2 |
≥
415 |
≥
205 |
≥
30 |
≥
50 |
– |
|
F5 |
≥
485 |
≥
275 |
≥
30 |
≥
50 |
– |
|
F9 |
≥
585 |
≥
415 |
≥
20 |
≥
50 |
– |
|
F11
Cl 1 |
≥
415 |
≥
205 |
≥
30 |
≥
50 |
– |
|
F11
Cl 2 |
≥
485 |
≥
275 |
≥
20 |
≥
50 |
– |
|
F11
Cl 3 |
≥
515 |
≥
310 |
≥
20 |
≥
50 |
– |
|
F12
Cl 1 |
≥
415 |
≥
220 |
≥
30 |
≥
50 |
– |
|
F12
Cl 2 |
≥
485 |
≥
275 |
≥
20 |
≥
50 |
– |
|
F22
Cl 1 |
≥
415 |
≥
205 |
≥
30 |
≥
50 |
– |
|
F22
Cl 3 |
≥
515 |
≥
310 |
≥
20 |
≥
50 |
– |
|
F91 |
≥
585 |
≥
415 |
≥
20 |
≥
40 |
≤
250 HB |
|
F92 |
≥
620 |
≥
440 |
≥
20 |
≥
40 |
≤
250 HB |
|
F122 |
≥
620 |
≥
440 |
≥
20 |
≥
40 |
≤
250 HB |
|
F911 |
≥
620 |
≥
415 |
≥
20 |
≥
40 |
≤
250 HB |
Ferritic
Stainless Steel Grades
|
Grade |
Tensile
Strength (MPa) |
Yield
Strength (MPa) |
Elongation
(%) |
Hardness |
|
F429 |
≥
450 |
≥
205 |
≥
22 |
– |
|
F430 |
≥
450 |
≥
205 |
≥
22 |
– |
|
XM-27 |
≥
620 |
≥
415 |
≥
20 |
– |
Austenitic
Stainless Steel Grades
|
Grade |
Tensile
Strength (MPa) |
Yield
Strength (MPa) |
Elongation
(%) |
Hardness |
|
F304 |
≥
515 |
≥
205 |
≥
30 |
≤
201 HB |
|
F304L |
≥
485 |
≥
170 |
≥
30 |
≤
201 HB |
|
F304H |
≥
515 |
≥
205 |
≥
30 |
≤
201 HB |
|
F309H |
≥
515 |
≥
205 |
≥
30 |
≤
201 HB |
|
F310 |
≥
515 |
≥
205 |
≥
30 |
≤
201 HB |
|
F316 |
≥
515 |
≥
205 |
≥
30 |
≤
217 HB |
|
F316L |
≥
485 |
≥
170 |
≥
30 |
≤
217 HB |
|
F316H |
≥
515 |
≥
205 |
≥
30 |
≤
217 HB |
|
F317 |
≥
515 |
≥
205 |
≥
30 |
≤
217 HB |
|
F321 |
≥
515 |
≥
205 |
≥
30 |
≤
217 HB |
|
F347 |
≥
515 |
≥
205 |
≥
30 |
≤
217 HB |
|
F904L |
≥
490 |
≥
220 |
≥
35 |
≤
192 HB |
Duplex
Stainless Steel Grades
|
Grade |
Tensile
Strength (MPa) |
Yield
Strength (MPa) |
Elongation
(%) |
Hardness |
|
F51
(S31803) |
≥
620 |
≥
450 |
≥
25 |
≤
290 HB |
|
F53
(S32750) |
≥
800 |
≥
550 |
≥
15 |
≤
310 HB |
|
F60
(S32205) |
≥
620 |
≥
450 |
≥
25 |
≤
290 HB |
Key Features of ASTM A182 Flanges
- High strength and durability
- Excellent performance under
high pressure and temperature
- Good corrosion and oxidation
resistance
- Suitable for critical and
heavy-duty applications
- Wide range of grades for
different environments
- Excellent weldability
(especially stainless grades)
- Long service life
Heat Treatment
Heat treatment depends on the material grade:
- Austenitic stainless steels
are supplied in annealed condition
- Alloy steels are normalized
and tempered or quenched and tempered
- Heat treatment improves
strength, hardness, and toughness
Applications of ASTM A182 Forged
Steel Flanges
ASTM A182 flanges are widely used in various
industries:
Oil and Gas
Industry
- Pipeline systems
- Offshore platforms
- Refineries
Power Generation
- Boilers
- Steam lines
- Pressure vessels
Petrochemical
Industry
- Process piping
- Chemical handling systems
Marine Industry
- Ship piping systems
- Offshore installations
Industrial
Piping Systems
- High-pressure pipelines
- Heat exchangers
- Valves and fittings
Conclusion
ASTM A182/A182M forged steel flanges provide
excellent strength, corrosion resistance, and reliability for high-temperature
and high-pressure applications. With a wide selection of stainless steel and
alloy steel grades, these flanges are ideal for critical industrial piping
systems.
Ladhani Metal Corporation supplies ASTM A182/A182M forged steel flanges in various sizes, types, and grades, ensuring high-quality products for demanding industrial applications.
FOR REQUIREMENT OF THIS GRADE OR FOR DETAIL CONTACT US AT :-
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