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Chrome Moly Alloy Pipe Flanges

With the largest chrome inventory in the world, Tioga carries a wide range of chrome moly alloy pipe flanges in a variety of sizes and pressure ratings to meet your project’s needs— including hard-to-find configurations and sizes.

Flange Face Configurations:

All Flanges are available in raised face or flat face configurations (except for lap joint flanges)

Weld Neck Bore Flanges:

Available in all bore sizes

Wall Pressure Ratings:

150#, 300#, 600#, 900#, 1500#, 2500#

Specialty Flanges:

Larger than 36" flanges regularly available. Hard-to-find configurations and wall ratings are our specialty.

Description of Material:

Chrome moly, ferritic alloy, creep and heat resistant

Find out more about:

Chrome Pipe >
Chrome Fittings >

For more technical questions about the specification A/SA182 contact one of our sales people at 1-800-523-3678 or try online at Technical Questions

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Download the pipe specification chart

Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service

ASTM A182/A182M - 16

» Scope

» Manufacture

» Heat Treatment

After hot working, forgings shall be cooled to a temperature below 1000 °F [538 °C] prior to heat treating in accordance with the requirements of the Table below

Heat Treating Requirements

Grade	Heat Treat Type	Austenitizing / Solutioning Temperature, Minimum or Range, °F [°C]^A	Cooling Media	Quenching Cool Below °F [°C]	Tempering Temperature, Minimum or Range, °F [°C]

Low Alloy Steels
F 1	anneal normalize and temper	1650 [900] 1650 [900]	furnace cool air cool	^B ^B	^B 1150 [620]
F 2	anneal normalize and temper	1650 [900] 1650 [900]	furnace cool air cool	^B ^B	^B 1150 [620]
F 5, F 5a	anneal normalize and temper	1750 [955] 1750 [955]	furnace cool air cool	^B ^B	^B 1250 [675]
F 9	anneal normalize and temper	1750 [955] 1750 [955]	furnace cool air cool	^B ^B	^B 1250 [675]
F 91	normalize and temper	1900-1975 [1040-1080]	air cool	^B	1350–1470 [730–800]
F 11, Class 1,2, 3	anneal normalize and temper	1650 [900] 1650 [900]	furnace cool air cool	^B ^B	^B 1150 [620]
F 12, Class 1, 2	anneal normalize and temper	1650 [900] 1650 [900]	furnace cool air cool	^B ^B	^B 1150 [620]
F 22, Class 1, 3	anneal normalize and temper	1650 [900] 1650 [900]	furnace cool air cool	^B ^B	^B 1250 [675]
F 22V	normalize and temper or quench and temper	1650 [900]	air cool or liquid	^B	1250 [675]

(B) Not applicable

» Chemical Requirements

Grade/ Identif ication Symbol	UNS Desig- nation	Composition, %
Grade/ Identif ication Symbol	UNS Desig- nation	Carbon	Manga- nese	Phos- phorus	Sulfur	Silicon	Nickel	Chrom- ium	Molybde- num	Colum- bium	Titan- ium	Other Elements

F 1	K12822	0.28	0.60–0.90	0.045	0.045	0.15–0.35	...	...	0.44–0.65	...	...	...
F 2B	K12122	0.05–0.21	0.30–0.80	0.04	0.04	0.10–0.60	...	0.50–0.81	0.44–0.65	...	...	...
F 5C	K41545	0.15	0.30–0.60	0.03	0.03	0.5	0.5	4.0–6.0	0.44–0.65	...	...	...
F 5aC	K42544	0.25	0.6	0.04	0.03	0.5	0.5	4.0–6.0	0.44–0.65	...	...	...
F 9	K90941	0.15	0.30–0.60	0.03	0.03	0.50–1.00	...	8.0–10.0	0.90–1.10	...	...	...
F91	K90901	0.08–0.12	0.30–0.60	0.02	0.01	0.20–0.50	0.4	8.0–9.5	0.85–1.05	0.06–0.10	...	N 0.03–0.07 Al 0.02^D V 0.18–0.25 Ti 0.01^D Zr 0.01^D
F 11 Class 1	K11597	0.05–0.15	0.30–0.60	0.03	0.03	0.50–1.00	...	1.00–1.50	0.44–0.65	...	...	...
F 11 Class 2	K11572	0.10–0.20	0.30–0.80	0.04	0.04	0.50–1.00	...	1.00–1.50	0.44–0.65	...	...	...
F 11 Class 3	K11572	0.10–0.20	0.30–0.80	0.04	0.04	0.50–1.00	...	1.00–1.50	0.44–0.65	...	...	...
F 12 Class 1	K11562	0.05–0.15	0.30–0.60	0.045	0.045	0.50 max	...	0.80–1.25	0.44–0.65	...	...	...
F 12 Class 2	K11564	0.10–0.20	0.30–0.80	0.04	0.04	0.10–0.60	...	0.80–1.25	0.44–0.65	...	...	...
F 22 Class 1	K21590	0.05–0.15	0.30–0.60	0.04	0.04	0.5	...	2.00–2.50	0.87–1.13	...	...	...
F 22 Class 3	K21590	0.05–0.15	0.30–0.60	0.04	0.04	0.5	...	2.00–2.50	0.87–1.13	...	...	...
F 22V	K31835	0.11–0.15	0.30–0.60	0.015	0.01	0.1	0.25	2.00–2.50	0.90–1.10	0.07	0.03	Cu 0.20 V 0.25–0.35 B 0.002 Ca 0.015 ^E

(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.

» Tensile

Tensile and Hardness Requirements^A

Grade Symbol	Tensile Strength, min, ksi [MPa]	Yield Strength, min, ksi [MPa]^B	Elongation in 2 in. [50 mm] or 4D, min, %	Reduction of Area, min, %	Brinell Hardness Number, HBW, unless otherwise indicated

Low Alloy Steels
F 1	70 [485]	40 [275]	20	30	143–192
F 2	70 [485]	40 [275]	20	30	143–192
F 5	70 [485]	40 [275]	20	35	143–217
F 5a	90 [620]	65 [450]	22	50	187–248
F 9	85 [585]	55 [380]	20	40	179–217
F 91	90 [620]	60 [415]	20	40	190–248
F 11 Class 1	60 [415]	30 [205]	20	45	121–174
F 11 Class 2	70 [485]	40 [275]	20	30	143–207
F 11 Class 3	75 [515]	45 [310]	20	30	156–207
F 12 Class 1	60 [415]	32 [220]	20	45	121–174
F 12 Class 2	70 [485]	40 [275]	20	30	143–207
F 22 Class 1	60 [415]	30 [205]	20	35	170 max
F 22 Class 3	75 [515]	45 [310]	20	30	156–207
F 22V	85–110 [585–780]	60 [415]	18	45	174–237

(A) Where ellipses appear in this table, there is no requirement and the test for the value need neither be performed nor a value reported.

(B) Determined by the 0.2 % offset method. For ferritic steels only, the 0.5 % extension-under-load method may also be used.

Common places to find ASTM A182/SA182

» Plants/Facilities

Gas-Fired

Combined Cycle Power Plant (CCPP)/Gas Combined Cycle Plant (GCCP)/Combined Cycle Gas-Fired Power Plant (CCGF)/Combined Heat & Power (CHP)/ Cogeneration Plant/Power Generation/Base Load Power Plants/Gas Turbine Natural Gas Peaker Power Plants

Coal-Fired

Coal-fired Combined Cycle Power Plant (CCPP/CHP)/Coal Combined Cycle Plant (CCCP)/Combined Cycle Coal-Fired Power Plant (CCGC)/Combined Cycle Power Plant (CCPP)/Combined Heat & Power (CHP)/Cogeneration Plant (CP)/Power Generation/Base Load Power Plants/Carbon Capture Sequestration (CCS) Carbon Capture Use & Sequestration (CCUS)/Carbon Dioxide Capture Sequestration/Clean Coal Technology Plants

Oil

Oil, Petroleum, Diesel Oil Peaker Power Plants

Refinery

Light Sweet Crude Oil/Heavy Sour/Light Sour/Heavy Sweet/Light Sweet/Medium Sweet/Condensate/Synthetic
Propane (LPG)/ Butane (LPG)/ Naphtha/Gasoline/Jet or Aviation Fuel/Kerosene/Distillate Heating Oil/Distillate Diesel/Residual Heating Oil/ Lubricants, Waxes, Asphalt, Petroleum Coke, Bitumen/Coking
Coking

Other

Ethanol/Biodiesel/Chemical Processing/PetroChemical/Chemical/Trigeneration/Fluidized Bed Combustion (FBC)/Hydrogen/Hydro Carbon Processing (HPI/HCP)/Natural Gas Liquids (NGLs)/ Liquid Natural Gas (LNG)/Floating Liquid Natural Gas (FLNG)/Molten Salt Solar Energy Thermal Storage and Concentrated Solar Power Plant (CSP)/Etylene/Chlorine/Propolene/Olefins/Plastics/Fertilizer/ Ammonia/Urea/ Food/ Pharmaceutical/Pulp/Sulfate (Caustic Based)/Sulfite/Newsprint/Cellulite
Molten Salt Solar Energy Thermal Storage/Concentrated Solar Power Plant

» Systems

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