ASTM A182 Stainless Steel 304/304L Flange

ASME / ANSI B16.5 SS 304/304L Flanges Manufacturer, UNS S30400 Weld Neck Flange, UNS S30403 Slip-on Flange, WNR 1.4301 Lap Joint Flange, WNR 1.4306 / 1.4307 Blind Flange

SS 304 and SS 304L are both austenitic stainless steel grades that are widely used in various applications, including the production of flanges.

The main difference between SS 304 and SS 304L is the carbon content. SS 304L has a lower carbon content than SS 304, which makes it more suitable for welding and reduces the risk of carbide precipitation during welding.

Flanges are used to connect pipes, valves, pumps, and other equipment in various industries. They come in different shapes and sizes, including slip-on flanges, weld-neck flanges, threaded flanges, and blind flanges.

When selecting flanges made from SS 304 or SS 304L, it is essential to consider the specific requirements of the application, such as temperature, pressure, and corrosion resistance. In general, both SS 304 and SS 304L are suitable for most applications involving water, chemicals, and gases at ambient temperatures. However, for more demanding applications, higher-grade stainless steel alloys may be required.

ASME SA182 Stainless Steel 304/304L Flanges

ASTM A182 Stainless Steel 304 RTJ Flange, PN10 PN16 Stainless Steel 304L Threaded Flange, Table D & Table E F304 Spectacle Blind Flange, ANSI 150 F304L Socket Weld Flange at the Lowest Prices

Q: What is the difference between 304 and 304L?
A: The main difference between 304 and 304L stainless steel lies in their carbon content. Grade 304 contains a maximum of 0.08% carbon, while grade 304L has a maximum of 0.03% carbon. This lower carbon content in 304L helps reduce the risk of sensitization, a condition that can occur when stainless steel is subjected to high temperatures, such as during welding or heat treatment.

Q: What is the rating of a 304L flange?
A: The rating of a 304L flange refers to its pressure-temperature rating, which indicates the maximum pressure and temperature at which the flange can safely operate. The rating for a 304L flange can vary depending on the design standards and specifications it meets. Common ratings for 304L flanges include ANSI/ASME Class 150, 300, and 600, which correspond to different pressure and temperature ranges.

Q: What is stainless steel 304 flanges?
A: Stainless steel 304 flanges are components used in piping systems to connect pipes, valves, and other equipment. They are made from grade 304 stainless steel, which is a versatile and widely used austenitic stainless steel alloy. 304 stainless steel offers excellent corrosion resistance, good formability, and high strength, making it suitable for various industrial applications.

Q: What is grade 304L stainless steel?
A: Grade 304L stainless steel is a low-carbon variation of the popular 304 stainless steel alloy. It contains less carbon content (maximum of 0.03%) compared to grade 304 (maximum of 0.08%). This reduced carbon content helps minimize the risk of sensitization and subsequent corrosion that can occur in high-temperature environments. Grade 304L is often preferred for applications involving welding or exposure to elevated temperatures.

Please note that the specific details and ratings may vary depending on the manufacturer, industry standards, and specific application requirements.

Stainless Steel 304/304L 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, ISO 70051, JIS B2220, 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

ASTM A182 Stainless Steel 304/304L Flanges Equivalent Grade

STANDARDDINUNSJISBSGOSTAFNOREN
SS 3041.4301S30400SUS 304304S3108Х18Н10Z7CN18‐09X5CrNi18-10
SS 304L1.4306 / 1.4307S30403SUS 304L3304S1103Х18Н11Z3CN18‐10X2CrNi18-9 / X2CrNi19-11

ASTM A182 SS Grade F304/304L Flanges Chemical Composition

GradeCMnSiPSCrMoNiN
SS 304min.18.08.0
max.0.082.00.750.0450.03020.010.5
SS 304Lmin.18.08.0
max.0.0302.00.750.0450.03020.012.0

SS UNS S30400/ S30403 Flanges Mechanical Properties

ElementDensityMelting PointTensile StrengthYield Strength (0.2%Offset)Elongation
SS 304/304L8.0 g/cm31400 °C (2550 °F)Psi – 75000 , MPa – 515Psi – 30000 , MPa – 20535 %

Find the largest ready stock of WERKSTOFF NR. 1.4301 Flange, JIS SUS 304 Flanges Flat Face,  BS 304S31 Flange, GOST 08Х18Н10 Flange, AFNOR Z7CN18‐09 WNRF Flange, EN X5CrNi18-10 Flange, Class 300#, 600#, 900#, 1500#, 2500# Stainless Steel 304/304L Flanges, ASTM A182 F304 Stub End Flanges, Steel 304 Tongue & Groove Flanges, 304L SS RTJ Flanges, SS 1.4306 BLRF Flanges, ANSI 150, Table D & Table E Stainless Steel 304/304L Flange, Series A & B SS 304 Grooved Flange, ASTM A182 F304 Lap Joint Flange, SS 304/304L Orifice Flange, PN10 PN16 Stainless Steel 304 Slip On Flange, Stainless Steel 304/304L Threaded Flange in Mumbai, India.

ASME B16.5 Stainless Steel 304/304L Flanges Dimensions

ASTM A182 Stainless Steel 304/304L Flanges Dimensions

ASTM A182 Stainless Steel 304/304L Flanges Dimensions

NPSO.D. of FlangeFlanges ThicknessDiameter of RFDiameter of Hub at BaseLengtd Tdru HubBore or DiameterDia. of Hub at BevelRadius of FilletDeptd of Socket
Welding (WN) NeckSlip-On (SORF) Threaded (NPT) Socket (SWRF)Lap Joint (Loose)Slip-on (SORF) Socket (SWRF)Lap Joint (Loose)
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

Class 150 SS Grade F304/304L Flanges Weight Chart

ASTM A182 Stainless Steel 304/304L Pipe Flanges Class 150
NOMINAL SIZEDIMENSIONSWEIGHT (KG)
NPS
(Inches)
DN (mm)FLANGE
MM
FLANGE
THICKNESS
SOW
SW
WNBLIND
1/21588.911.20.40.50.4
3/42098.612.70.60.70.6
12510814.20.810.9
1 1/432117.315.711.31.2
1 1/24012717.51.31.71.5
250152.419.12.12.62.4
2 1/265177.822.43.34.13.9
380190.523.93.94.94.9
3 1/290215.923.94.86.16.2
4100228.623.95.36.87.0
512525423.96.18.68.6
6150279.425.47.510.611.3
8200342.928.412.117.619.6
10250406.430.216.52428.6
12300482.631.826.236.543.2
14350533.435.134.648.458.1
16400596.936.644.860.676.1
1845063539.648.968.393.7
20500698.542.961.984.5122.0
24600812.847.886.9115185.0

Class 300 Stainless Steel 304/304L Flanges Weight Chart

ASTM A182 Stainless Steel 304/304L Pipe Flanges Class 300
NOMINAL SIZEDIMENSIONSWEIGHT (KG)
NPS
(Inches)
DN (mm)FLANGE
OD
A
MM
FLANGE
THICKNESS
D
MM
SOW
SW
WNBLIND
1/21595.314.20.60.80.6
3/420117.315.71.11.31.1
12512417.51.41.51.4
1 1/432133.419.11.72.01.8
1 1/240155.520.62.52.92.7
250165.122.42.93.43.2
2 1/265190.525.44.35.24.9
380215.928.45.96.96.8
3 1/290228.630.27.38.78.7
410025431.89.611.211.5
5125279.435.112.315.115.6
6150317.536.615.619.120.9
820038141.124.229.934.3
10250444.547.634.142.753.3
12300520.750.849.861.878.8
14350584.253.869.985.8105.0
16400647.757.288.1106.0137.0
18450711.260.5109.0131.0175.0
20500774.763.5134.0158.0221.0
24600914.470.0201.0230.0339.0

Class 600 Stainless Steel 304/304L Flanges Weight Chart

ASTM A182 Stainless Steel 304/304L Pipe Flanges Class 600
NOMINAL SIZEDIMENSIONSWEIGHT (KG)
NPS
(Inches)
DN (mm)FLANGE
OD
A
MM
FLANGE
THICKNESS
D
MM
SOW
SW
WNBLIND
1/21595.314.20.70.90.8
3/420117.315.71.31.51.3
125124.017.51.51.81.6
1 1/432133.420.622.52.2
1 1/240155.422.433.53.3
250165.125.43.64.44.2
2 1/265190.528.45.36.46.1
380209.631.878.58.4
3 1/290228.635.18.810.711
4100273.138.114.517.417.3
5125330.244.524.429.229.4
6150355.647.828.734.936.1
8200419.155.643.453.958.9
1025050863.570.386.597.5
12300558.866.584.2103.0124
14350603.369.998.7122.0151
16400685.876.2142.0170.0214
1845074382.6173.0204.0272
20500812.888.9220.0254.0349.0
24600939.8101.6312.0358.0533.0

Class 900 Stainless Steel 304/304L Flanges Weight Chart

ASTM A182 Stainless Steel 304/304L Pipe Flanges Class 900
NOMINAL SIZEDIMENSIONSWEIGHT (KG)
NPS
(Inches)
DN (mm)FLANGE
OD
A
MM
FLANGE
THICKNESS
D
MM
SOW
SW
WNBLIND
1/215120.722.41.81.91.8
3/42013025.42.42.62.4
125149.428.43.63.73.6
1 1/432158.828.444.34.1
1 1/240177.831.85.55.95.8
250215.938.110.210.810
2 1/265244.341.113.91514
380241.338.111.613.713.1
4100292.144.519.722.526.9
5125349.350.831.937.436.5
615038155.641.147.747.4
8200469.963.570.781.382.5
10250546.169.9101.0119122.0
12300609.679.2133.0157.0173.0
14350641.485.6153.0180.0206.0
16400704.988.9185.0217.0259.0
18450787.4101.6258.0292.0367.0
20500857.3108.0317.0362.0463.0
246001041.4139.7606.0665.0876.0

Class 1500 Stainless Steel 304/304L Flanges Weight Chart

ASTM A182 Stainless Steel 304/304L Pipe Flanges Class 1500
NOMINAL SIZEDIMENSIONSWEIGHT (KG)
NPS
(Inches)
DN (mm)FLANGE
OD
A
MM
FLANGE
THICKNESS
D
MM
SOW
SW
WNBLIND
1/215120.722.41.81.91.8
3/42013025.42.42.62.4
125149.428.43.63.73.6
1 1/432158.828.444.34.1
1 1/240177.831.85.55.95.8
250215.938.110.210.810.1
2 1/265244.341.113.91514
380266.747.819.919.1
4100311.253.829.929.9
5125374.773.255.458.4
6150393.782.668.471.8
8200482.691.9117122
10250584.2108194.0210.0
12300673.1124288.0316.0
14350749.3133.4380.0420
16400825.5146.1485.0558.0
18450914.4162.1644.0760.0
20500984.3177.8775.0965.0
246001168.4203.21232.01558.0

Class 2500 Stainless Steel 304/304L Flanges Weight Chart

ASTM A182 Stainless Steel 304/304L Pipe Flanges Class 2500
NOMINAL SIZEDIMENSIONSWEIGHT (KG)
NPS
(Inches)
DN (mm)FLANGE
OD
A
MM
FLANGE
THICKNESS
D
MM
WNBLIND
1/215133.430.23.13.0
3/420139.731.83.73.5
125158.835.15.25.0
1 1/432184.238.17.77.4
1 1/240203.244.510.910.4
25023550.816.215.6
2 1/265266.757.223.722.6
380304.866.536.234.8
4100355.676.255.353.9
5125419.191.992.590.8
6150482.6108143.0141
8200552.5127215.0214
10250673.1165.1406.0411.0
12300762184.2572.0592.0

Stainless Steel 304 / 304L Flanges Schedule / Class

Flange Schedule/ClassPipe Size – Pipe FlangesFlange Connection TypeFlange MaterialMax. Pressure
ASME B16.5 Class 1501/2″FNPTStainless Steel 304 / 304L Flanges150 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

Stainless Steel 304 / 304L 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, PN16SS 304 PN10 Flanges, 304L SS DIN PN 10 Flanges, 304 SS PN16 Flange
DIN PN20, PN25SS 304 PN20 Flanges, 304L SS DIN PN 25 Flanges
DIN PN40, PN50SS 304 PN40 Flanges, 304L SS 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, 10KSS 304 5K SORF Flanges, 304L SS 10K SOFF Flanges
JIS 16K, 20KSS 304 16K Blind Flanges, 304L SS 20K BLRF Flanges
JIS 30K, 40KSS 304 30K Slip on Flanges, 304L SS 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 DSS 304 BS 10 Table D Flanges, 304L Table D Pipe Flange
BS 10 Table ESS 304 BS 10 Table E Flanges, 304L Table E Pipe Flange
BS 10 Table FSS 304 BS 10 Table E Flanges, 304L Stainless Steel Table E Flanges
BS 10 Table HSS 304 BS 10 Table E Flanges, Stainless Steel 304L Table E Pipe Flanges

Best quality Stainless Steel 304/304L Flange, EN X5CrNi18-10 Flange,  ASTM A182 F304 Stub End Flanges, Steel 304 Tongue & Groove Flanges, 304L SS RTJ Flanges, SS 1.4306 BLRF Flanges, ANSI 150, Table D & Table E Stainless Steel 304 Flange, Series A & B SS 304  Flange, ASTM A182 F304 Lap Joint Flange, JIS Stainless Steel 304 Orifice Flange, PN10 PN16 Stainless Steel 304 Slip On Flange, Stainless Steel 304 Threaded Flange.

Stainless Steel 304 / 304L 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

Stainless Steel 304/304L Flanges Price

Omaa Metal Sources is ASME B16.5 ASTM A182 Stainless Steel 304 / 304L 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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