ASTM A182 F22, F11, F5, F9 & F91 Chrome Moly Alloy Pipe Flanges

ASTM A182 CHROME MOLY ALLOY STEEL PIPE FLANGES

ASTM A182 F22, F11, F5, F9 & F91 Alloy Steel Flanges

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Chromium-Molybdenum Alloy Steel or Chrome-Moly, CrMo is an alloy steel intended for high temperature and high pressure services. Chrome-Moly is used in the power generation industry and the petro-chemical industry because of its tensile strength, corrosion resistance and high-temperature strength. Chrome-Moly has a better strength to Weight ratio than steel, which enables designers to use thinner wall pipe or smaller diameter tubing to reduce overall weight.

Chromium-Molybdenum Alloy Steel has strong resistance to rupturing at high temperatures and high pressures. Chrome-Moly is also resistant to cracking from hydrogen attack and hot sulfide corrosion cracking.

Chrome-Moly grades P11, P22, P91 and P92 are used in the power industry. Chrome-Moly grades P5 and P9 are used in petro-chemical refinery processes. Chrome-Moly Forged Fittings & Flanges are available in grades F5, F9, F11, F22, F91, F92. Chrome-Moly Alloy Butt Weld Fittings are available in grades WP5, WP9, WP11, WP22, WP91, WP92. F11 and F22 material meet NACE-MRO 175.

Chrome Moly Alloy Steel Pipe Flanges Type:

1. Buttweld chrome moly flanges

2. Raised Face Slip On chrome moly flanges

3. Raised Face Socket Weld chrome moly flanges

4. Raised Face Threaded chrome moly flanges

5. Raised Face Blind chrome moly flanges

6. Raised Face Weld Neck chrome moly flanges

7. Raised Face Lap Joint Flanges

8. Raised Face Plate Flanges

9. Orifiace Falnges

10. Ring Joint Flanges

Chrome Moly Alloy Pipe Flange Specification:

ASTM A182

Chrome Moly Alloy Flange Size:

1/2″ through 120″

Chrome Moly Alloy Pipe Flange Pressure Rating:

150#, 300#, 400#, 600#, 900#, 100#, 2500#

Chrome Moly Alloy Pipe Flange Material Grades:

Trade Name

Grade

UNS #

Flanges

1 1/4 Chrome

F11 Class 1

K11597

A182 / SA182

1 1/4 Chrome

F11 Class 2

K11572

A182 / SA182

1 1/4 Chrome

F11 Class 3

K11572

A182 / SA182

2 1/4 Chrome

F22 Class 1

K21590

A182 / SA182

2 1/4 Chrome

F22 Class 3

K21590

A182 / SA182

5 Chrome

F5

K41545

A182 / SA182

9 Chrome

F9

K90941

A182 / SA182

F91

F91

K90901

A182 / SA182

F92

F92

K92460

A182 / SA182

Chrome Moly Alloy Pipe Flanges Dimensions

Chrome Moly Alloy Pipe Flanges Weight

ASTM A182 F22, F11, F5, F9 & F91 Chrome Moly Alloy Pipe Flanges Chemical Properties

COMPOSITION

GRADE

C

Mn

Cr

Mo

Cb

N

Al

V

F5

0.15 max

0.3 – 0.6

4-6

0.44 – 0.65

F9

0.15 max

0.3 – 0.6

8-10

0.9 – 1.1

F11

0.1 – 0.2

0.3 – 0.8

1 – 1.5

0.44 – 0.65

F22

0.05 – 0.15

0.3 – 0.6

2 – 2.5

0.87 – 1.13

F91

0.08 – 0.12

0.3 – 0.6

8 – 9.5

0.85 – 1.05

0.06 – 0.1

0.03 – 0.07

0.4 max

0.18 – 0.25

ASTM A182 F22, F11, F5, F9, F1, F12 & F91 Chome Moly Alloy Steel Flanges Mechanical Properties

Grade

Tensile Strength

Yield Strength (0.2%Offset)

Elongation

Alloy Steel A182 F1

275

485

20%

Alloy Steel A182 F5

275

485

20%

Alloy Steel A182 F9

380

585

20%

Alloy Steel A182 F11

205

415

20%

Alloy Steel A182 F12

275

485

20%

Alloy Steel A182 F22

205

415

20%

Alloy Steel A182 F91

380

585

20%

Design Features – Chrome-Moly

1. Strong resistance to rupturing at high temperatures and high pressures

2. May be used for Hydrogen Sulfide Corrosion Services

3. Resistant to cracking from hydrogen attack and embrittlement

4. Resistant to hot sulfide corrosion cracking

5. Can be used for NACE Applications where sour environments are under high temp and pressure

6. Can be used in NACE-MRO 175 Sour Service

7. Ideal for creep rupture applications

8. Can handle high temperatures with very low elasticity