Alloy Steel A182 F91 Flanges

ASTM A182 Alloy Steel F91 Flanges Manufacturer, UNS K90901 Weld Neck Flange, ASTM A182 F91 Slip-on Flange, WNR 1.4903 Lap Joint Flange, Cr-Mo F91 Blind Flange

F91 flanges are a type of flange made from ASTM A182 Grade F91 material, which is a low alloy steel containing chromium and molybdenum. F91 flanges are commonly used in high-pressure and high-temperature applications, such as in oil and gas, chemical, and power generation industries.

F91 flanges are typically available in various sizes and pressure ratings, and they can be manufactured in various types such as weld neck, slip-on, socket weld, and threaded. They are designed to connect pipes or equipment, allowing for easy assembly and disassembly.

One of the key advantages of using F91 flanges is their high resistance to corrosion and erosion, making them ideal for use in harsh environments. They also offer high strength and durability, which ensures their long-term reliability in demanding applications.

When selecting F91 flanges, it is important to consider factors such as temperature, pressure, and media compatibility to ensure that the chosen flange is suitable for the intended application. Additionally, proper installation and maintenance are crucial for ensuring the optimal performance of F91 flanges.

Alloy Steel F91 Flanges

ASME / ANSI B16.5 Alloy Steel F91 RTJ Flange, PN10 PN16 Chromium Molybdenum Gr. F91 Threaded Flange, Table D & Table E Chrome Moly F91 Spectacle Blind Flange, ANSI 150 Alloy Grade F91 Socket Weld Flange at the Lowest Prices

Alloy Steel F91 Flange Specifications

Size Range

1/2″ (15 NB) to 48″ (1200NB)

Class / Pressure Rating

150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Standards / Dimensions

ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, BS, GOST, MSS SP-44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605

Connection Type

Ring Joint Flange (RTJ), Flat Face Flange (FF), Raised Face Flange (RF), Male and Female Flange (M & F), Lap Joint Flange, Large and Small Tongue-and-Groove Flange (T & G)

Material Standards

ASTM A182 / ASME SA182

Alloy Steel F91 Flanges Equivalent Grade

STANDARDUNSWERKSTOFF NR.Trade Name
Alloy Steel F91 K909011.49039Cr-1Mo-V

ASTM A182 Alloy Steel Grade F91 Flanges Chemical Composition

GradeCMnSiPSCrMo
Alloy Steel F910.08 – 0.120.3 – 0.60.50.010.028.5 – 9.50.85 – 1.05

Alloy Steel A182 F91 Flanges Mechanical Properties

GradeTensile Strength (MPa) minYield Strength 0.2% Proof (MPa) minElongation (% in 50mm) min
Alloy Steel F9141558520

Find the largest ready stock of  Class 300#, 600#, 900#, 1500#, 2500# Alloy Steel F91 Flanges, Cr-Mo F91 Weld Neck Flanges, Alloy Grade F91 Long Welding Neck Flange, F91 Alloy Steel Blind Flange, Alloy Steel F91 Weld Neck Flanges A / B, Chromium Molybdenum F91 Socket weld Flanges, F91 Alloy Steel Nipo Flanges, EN 1.4903 Flanges, Alloy Gr. F91 Expander Flanges at Best Price, F91 Chrome Moly Steel Forging Facing Flanges, Alloy Steel F91 Flanges Dimensions, Alloy F91 BS Standard Table E Flange, Chrome Moly UNS K90901 Lap Joint Flanges, ANSI B16.5 Alloy Steel F91 Pipe Flange in Mumbai, India.

A182 Alloy Steel F91 Flanges Dimensions & Size

Nominal Pipes SizesOD (Outside Dia) of FlangeThicknessDia of Raised FaceDia of Hub at BaseLength Thru HubDia or BoreDia of Hub at BevelRadius of FilletDepth of Socket
Welding NeckSlip-On Threaded SocketLap JointSlip-on SocketLap Joint
OQRXYYYWBHrZ
1/23-1/27/161-3/81-3/161-7/85/85/8.88.90.841/83/8
3/43-7/81/21-11/161-1/22-1/165/85/81.091.111.051/87/16
14-1/49/1621-15/162-3/1611/1611/161.361.381.321/81/2
1-1/44-5/85/82-1/22-5/162-1/413/1613/161.701.721.663/169/16
1-1/2511/162-7/82-9/162-7/167/87/81.951.971.901/45/8
263/43-5/83-1/162-1/2112.442.462.385/1611/16
2-1/277/84-1/83-9/162-3/41-1/81-1/82.942.972.885/163/4
37-1/215/1654-1/42-3/41-3/161-3/163.573.603.503/813/16
3-1/28-1/215/165-1/24-13/162-13/161-1/41-1/44.074.104.003/87/8
4915/166-3/165-5/1631-5/161-5/164.574.604.507/1615/16
51015/167.5/166-7/163-1/21-7/161-7/165.665.695.567/1615/16
61118-1/27-9/163-1/21-9/161-9/166.726.756.631/21-1/16
813-1/21-1/810-5/89-11/1641-3/41-3/48.728.758.631/21-1/4
10161-3/1612-3/41241-15/161-15/1610.8810.9210.751/21-5/16
12191-1/41514-3/84-1/22-3/162-3/1612.8812.9212.751/21-9/16
14211-3/816-1/415-3/452-1/43-1/814.1414.1814.001/21-5/8
1623-1/21-7/1618-1/21852-1/23-7/1616.1616.1916.001/21-3/4
18251-9/162119-7/85-1/22-11/163-13/1618.1818.2018.001/21-15/16
2027-1/21-11/1623225-11/162-7/84-1/1620.2020.2520.001/22-1/8
24321-7/827-1/426-1/863-1/44-3/824.2524.2524.001/22-1/2

A182 Alloy Steel F91 Flanges Weight Chart

CLASSNominal Pipe SizeSlip OnThreadedSocket WeldLap JointBlindWeld Neck
150 lb½112122
¾222222
1222223
333333
333344
2555556
8888710
39999911.5
111211111312
4131313131716.5
5151515152021
6191919192726
8303030304742
10434343437054
126464646412388
14909090105140114
161069898140180140
18130130130160220165
20165165165195285197
22185185185245355225
24220220220275430268
 
300 lb½223222
¾333333
1333344
4.54.544.565
6.56.566.577
2777789
101010101212
313141314.51618
171717172120
423.52422242826.5
5293128283736
6393939395045
8585858588169
1081818191124100
12115115115140185142
14165165165190250206
16210220190234315250
18253280250305414320
20315325315375515400
22370370370435640465
24490490475550800580
 
400 lb½222223
¾333333.5
13.53.53.53.544
4.54.54.54.564.5
6.56.56.56.588
288881010
121212111514
3151515142018
212121202926
4262626253335
5313131294443
6444444426157
86767676410089
10919191110155125
12130130130152226175
14191191191210310233
16253253253280398295
18310310310345502360
20378378378420621445
22405405405455720505
24539539539615936640
 
600 lb½222233
¾333344
1444444
555566
777788
299991012
131313121518
3161616152023
212121202926
4373737364142
5636363636868
6808080788681
8115115115112140120
10177177177195231190
12215215215240295226
14259259259290378347
16366366366400527481
18476476476469665555
20612612612604855690
225905905906701000720
248768768768661250977
 
900 lb½666647
¾666667
17.57.57.57.598.5
101010101010
141414141414
2222222212524
313131253231
3363636293536
4535353515453
5838383818786
6110110110105115110
8172172172190200187
10245245245277290268
12326326326371415372
14400400400415520562
16459459459488619685
18647647647670880924
2079279279286811071164
24148014801480165920992107
 
1500 lb½666647
¾666667
1888899
101010101010
141414141414
2252525252525
363636353536
3484848474848
4737373757373
5132132132140140132
6165165165170160165
8260260260286302275
10436436436485510455
12667667667749775690
14940940940890975940
16125012501250125013001250
18162516251625147517501625
20205020502050177522252050
24282528252825282536253325
 
2500 lb½….7….778
¾….9….8109
1….12….121213
….18….171820
….25….242528
2….38….373942
….55….535652
3….83….808694
4….127….122133146
5….210….204223244
6….323….314345378
8….485….471533576
10….925….89710251068
12….1300….126214641608

Alloy Steel Grade F91 Flange Pressure Ratings

Temp. °FClass 75 psiClass 150 psiClass 300 psiClass 400 psiClass 600 psiClass 900 psiClass 1500 psiClass 2500 psi
-20~10014529075010001500225037506250
2001352607359801470221036806135
3001152307009351400210034955830
4001002006708901335200533455570
500851706458601290194032305385
600701406058051210181530255040
650601255907851175176529404905
7001105707551135170528404730
750955307101065159526604430
800805106751015152525404230
85065485650975146024354060
90050375500745112018703115
9503527536555082513702285
1000202002654005959951655
10501451902904307201200
110095130190290480800
11506080125185310515
1200354570105170285

A182 B16.5 Alloy Steel F91 Flanges Schedule / Class

Flange Schedule/ClassPipe Size – Pipe FlangesFlange Connection TypeFlange MaterialMax. Pressure
ASME B16.5 Class 1501/2″FNPTAlloy Steel F91 / Cr-Mo F91 / A182 F91 Flange150 psi
ASME B16.5 Class 1501/2″Socket Weld275 psi
ASME B16.5 Class 1501/2″Welded150 psi
ASME B16.5 Class 1503/4″FNPT150 psi
ASME B16.5 Class 1503/4″Socket Weld275 psi
ASME B16.5 Class 1501-1/4″Socket Weld275 psi
ASME B16.5 Class 1501-1/2″Socket Weld275 psi
ASME B16.5 Class 1502″FNPT150 psi
ASME B16.5 Class 1502″Socket Weld275 psi
ASME B16.5 Class 1502-1/2″Socket Weld275 psi
ASME B16.5 Class 1503″Socket Weld275 psi
ASME B16.5 Class 1504″FNPT150 psi
ASME B16.5 Class 1504″Socket Weld275 psi
ASME B16.5 Class 3001/2″Slip On720 psi
ASME B16.5 Class 3001/2″Slip On720 psi
ASME B16.5 Class 3001″Slip On720 psi
ASME B16.5 Class 3001″Slip On720 psi
ASME B16.5 Class 3001-1/4″FNPT720 psi
ASME B16.5 Class 3001-1/4″Slip On720 psi
ASME B16.5 Class 3001-1/2″Slip On720 psi
ASME B16.5 Class 3001-1/2″Slip On720 psi
ASME B16.5 Class 3002″Slip On720 psi
ASME B16.5 Class 3002″Slip On720 psi
ASME B16.5 Class 3002-1/2″Slip On720 psi
ASME B16.5 Class 3002-1/2″Slip On720 psi
ASME B16.5 Class 3003″Slip On720 psi
ASME B16.5 Class 3003″Slip On720 psi
ASME B16.5 Class 3004″Slip On720 psi
ASME B16.5 Class 3004″Slip On720 psi

Alloy Steel Grade F91 Flanges Standard

American Steel Flanges Standard
Standard CodeStandard Name
ANSI ASME SA-182Forged Flanges
ANSI ASME B16.5Slip on flange, Welding neck flange, Blind
flange, Threaded flange, Lap joint flange, RTJ flange
ASME – B 16.47Welding neck flange, Blind flange
ASME – B 16.36Welding neck flange Slip on flange
German Steel Flanges Standard
DIN 2527Steel Blind Flanges, BLRF
DIN 2573 / 2576Flat Flange for Welding (Slip On)
DIN 2673Loose Flanges and Rings for Welding (Slip On Flanges and Plain Collars)
DIN 2641 / 2642Lapped / Loose (Lap Joint) Flanges Plain Collars
DIN 28115Long Neck Welding Flanges
DIN PN10, PN16Alloy Steel F91 PN10 Flanges, F91 Alloy Steel DIN PN 10 Flanges, A182 F91 Alloy Steel PN16 Flange
DIN PN20, PN25Alloy Steel F91 PN20 Flanges, F91 Chrome Moly DIN PN 25 Flanges
DIN PN40, PN50Chrome Moly Steel F91 PN40 Flanges, F91 Alloy Steel DIN PN 50 Flanges
Japanese Steel Flanges Standard
JIS B2220Slipon plate flange (SOP), Slipon Hub (SOH),
Socket Welding flange (SW), Welding neck
flange (WN), Lapjoint (LJ), Threaded flange
(TR)/ Itegral flange (IT) Blank flange (BL)
JIS B2291Slipon plate flange (SOP), Slipon Hub (SOH),
Socket Welding flange (SW), Welding neck
flange (WN), Lapjoint (LJ), Threaded flange
(TR)/ Itegral flange (IT) Blank flange (BL)
JIS 5K, 10KAlloy Steel F91 5K SORF Flanges, F91 Alloy Steel 10K SOFF Flanges
JIS 16K, 20KAlloy Steel F91 16K Blind Flanges, A182 F91 Chromium Molybdenum Steel 20K BLRF Flanges
JIS 30K, 40KAlloy Steel F91 30K Slip on Flanges, F91 Alloy Steel 40K Blind Flanges
Italian Flanges Standard
UNI FLANGESPlan flanges (2276, 2277, 2278, 6083, 6084)
Welding neck (2280, 2281, 2282, 2283,
2284, 2285, 2286) Lapped flanges (6088,
6089, 6090, 2999, 2300) Blind flanges
(6091, 6092, 6093, 6094, 6095, 6096, 6097)
threaded flanges (2253, 2254)
British Standard Pipe Flanges Standard
BS 10 Table DAlloy Steel F91 BS 10 Table D Flanges, F91 Table D Pipe Flange
BS 10 Table EAlloy Steel F91 BS 10 Table E Flanges, A182 F91 Table E Pipe Flange
BS 10 Table FChromium Molybdenum Steel F91 BS 10 Table E Flanges, F91 Cr-Mo Table E Flanges
BS 10 Table HAlloy Steel F91 BS 10 Table E Flanges, Cr-Mo F91 Table E Pipe Flanges

Best quality Alloy Steel Grade F91 Flanges, MSS SP-44 CrMo F91 Plate Flange, F91 Alloy Steel Forged Flanges Exporter, UNS K90901 Puddle Flanges Chromium Molybdenum Steel F91 Flange, Chrome Moly F91 Forged Flanges Flat Face, Alloy Steel F91 Flanges Dimension, Alloy A182 F91 Weld Neck Flanges, DIN 1.4903 Backup Flange, ASME SA182 AS F91 RTJ Flanges, F91 AS SORF Flange, Alloy Steel F91 Lap Joint Flanges, Werkstoff Nr. 1.4903 SORF Flanges, Chrome Moly F91 Flanges, Grade F91 Alloy Steel Flat Face Flanges, Cr-Mo F91 Spades Ring Spacers Flanges, Wrought Alloy Steel F91 Flanges, ASTM A182 F91 Expander Flanges at Best Price.

Alloy Steel A182 Grade F91 Flanges Applications

Australia, Afghanistan, Algeria, Angola, Argentina, Armenia, Azerbaijan, Bahrain, Bangladesh, Benin,
Bhutan, Botswana, Brazil, Brunei, Burkina Faso, Cambodia, Cameroon, Canada, Central Africa Republic,
Chad, Chile, Colombia, Cuba, Cyprus, DRC, Djibouti, Egypt, Equatorial Guinea, Eritrea, Eswatini,
Ethiopia, Fiji, Finland, France, Georgia, Germany, Ghana, Greece, Hungary, Iceland, Indonesia, Iran,
Iraq, Ireland, Israel, Italy, Japan, Jordan, Kazakhstan, Kenya, Kuwait, Kyrgyzstan, Laos, Lebanon,
Lesotho, Liberia, Libya, Lithuania, Madagascar, Malawi, Malaysia, Maldives, Mali, Mexico, Morocco,
Mozambique, Mauritania, Myanmar, Namibia, Nepal, Netherlands, New Zealand, Nigeria, Norway, Oman,
Panama, Peru, Philippines, Poland, Portugal, Palestine, Qatar, Russia, Rwanda, Romania, Saudi Arabia,
Senegal, Sierra Leone, Singapore, Slovakia, Somalia, South Africa, South Korea, South Sudan, Spain,
Sri Lanka, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Tanzania, Tasmania, Thailand, The Gambia,
Timor-Leste, Togo, Tunisia, Turkey, Turkiye, Turkmenistan, Uganda, Uzbekistan, United Arab Emirates (UAE),
United Kingdom (UK), United States (US), Venezuela, Vietnam, Yemen, Zambia, Zimbabwe

Abu Dhabi, Amsterdam, Abuja, Accra, Addis Ababa, Ahmedabad, Algiers, Amman, Ankara, Antananarivo,
Ashgabat, Asmara, Astana, Athens, Baghdad, Baku, Bamako, Bandar Seri Begawan, Bangkok, Bangui,
Banjul, Beirut, Bengaluru, Berlin, Bishkek, Bloemfontein, Bogotá, Bern, Brasília, Bratislava,
Bucharest, Budapest, Buenos Aires, Cairo, Canberra, Cape Town, Caracas, Chennai, Coimbatore, Dakar,
Damascus, Dhaka, Dili, Djibouti city, Dodoma, Doha, Dublin, Dushanbe, Freetown, Gaborone, Ghaziabad,
Guwahati, Hanoi, Harare, Havana, Helsinki, Hobart, Hyderabad, Indore, Jaipur, Jakarta, Jerusalem,
Juba, Jurong East, Kabul, Kampala, Kanpur, Kathmandu, Kigali, Kinshasa, Kochi, Kolkata, Kuala Lumpur,
Kuwait City, Lisbon, Lilongwe, Lima, Lobamba, Lomé, London, Luanda, Lucknow, Lusaka, Malabo, Madrid,
Malé, Mexico City, Manama, Moscow, Manila, Maputo, Maseru, Mbabane, Mogadishu, Monrovia, Mumabi,
Muscat, Nagpur, Nairobi, New Delhi, Niamey, Nicosia, Noida, Nouakchott, N’Djamena, Oslo, Ottawa,
Ouagadougou, Panama City, Paris, Patna, Phnom Penh, Porto-Novo, Pretoria, Pune, Rabat, Reykjavík,
Riyadh, Rome, Sana’a, Santiago, Sri Jayawardenepura Kotte, Stockholm, Seoul, Singapore, Surat,
Suva, Taipei City, Tashkent, Tokyo, Tbilisi, Tehran, Thimphu, Tripoli, Tunis, Vientiane, Vilnius,
Visakhapatnam, Warsaw, Washington D.C., Wellington, Windhoek, Yaoundé, Yerevan, Naypyidaw

Alloy Steel F91 Flanges Price

Omaa Metal Sources is ASME B16.5 ASTM A182 Alloy Steel F91 Flanges Exporters and Suppliers in the US, UK, South Africa, Saudi Arabia, Singapore, UAE, Oman, South Korea, Turkey, Bahrain, Malaysia, Philippines, Thailand, Norway, Indonesia, Iraq, Yemen, Bangladesh, Nigeria, Egypt, Peru, Ghana, Morocco, Etc.

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