Bringing together better materials, products and services, so you always find exactly what you need.
All Flanges are available in raised face or flat face configurations (except for lap joint flanges)
Available in all bore sizes
150#, 300#, 600#, 900#, 1500#, 2500#
Larger than 36" flanges regularly available. Hard-to-find configurations and wall ratings are our specialty.
Chrome moly, ferritic alloy, creep and heat resistant
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
Your Home for Chrome - Lunch & Learn Flyer
Download the pipe specification chart
This specification covers forged low alloy and stainless steel piping components for use in pressure systems. Included are flanges, fittings, valves, and similar parts to specified dimensions or to dimensional standards. The M in the designation stands for metric.
The low-alloy ferritic steels shall be made by the open-hearth, electric-furnace, or basic-oxygen process with the option of separate degassing and refining processes in each case.
The stainless steels shall be melted by one of the following processes: (a) electric-furnace (with the option of separate degassing and refining processes); (b) vacuum-furnace; or (c) one of the former followed by vacuum or electroslag-consumable remelting. Grade F XM-27Cb may be produced by electron-beam melting.
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
Grade/ Identif ication Symbol |
UNS Desig- nation |
Composition, % | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
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 0.02D V 0.18–0.25 Ti 0.01D Zr 0.01D |
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 and Hardness RequirementsA
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.
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
Hot
Heat Recovery Steam Generation (HRSG)/Energy Recovery Heat Exchanger
Super Critical Boilers/Sub Critical Radiant Boilers/Low NOX (Nitrogen Oxide) Boilers/Steam Boiler Header piping/Header piping job/Boiler Steam Headers/Water Tube Boilers/Waste Heat Boiler
Natural Genset/Natural Gas Generator Set/Diesel Generator Set
Ener-Core Power Oxidizer
Steam Generator Replacement (SGR)
Hot ReHeat (HRH) Systems
Closed Loop Hot Water Heating
Cold
Cold ReHeat (CRH) Systems
Air/Emissions
Industrial Flue Gas Treatment Systems
Pollutant Control System (FGD, DeNOx, Particulate Control, Mercury Control)
Other
Selective Catalytic Reduction (SCR)
Fluid Catalytic Cracker (FCC)/Fluid Catalytic Cracker Unit (FCCU)/Cat Cracker/Hydrocracking/ Reformation or Reforming units
Alkylation Units
Click here to find compatibility charts, conversion tools and more in our Resources section.