Stainless Steel 304H Flanges

Stainless Steel 304H Flanges

SS 304H / ASTM A182 F304H elevated-temperature flanges

Savoy Piping Inc. supplies stainless steel 304H flanges (ASTM A182 F304H) for higher-temperature austenitic service where controlled carbon supports creep strength.

Related: A182 stainless hub · WNRF · Blind · Flanges hub.

What is this grade?

304H has a higher carbon range than 304/304L for elevated-temperature strength. Do not substitute 304L on high-temp duties without engineering approval.

Selection guidance

Twin: A182 F304H. Related: 321 · 347.

What to put on the PO

Include SS 304H / A182 F304H, flange type and facing, size and pressure class, bore/schedule, quantity, destination, and documentation (EN 10204 3.1 / 3.2, PMI, NACE, TPI). Email sales@savoypipinginc.com.

Stainless Steel 304H Flange Range

Stainless Steel 304H Flange Specification ASTM A182 / ASME SA182
Stainless Steel 304H Flange Manufacturing Process Hot Forging / Rolling / Machining
Stainless Steel 304H Flange Other Grades 202 / 304 / 304L / 304H / 309S / 310S / 316 / 316L / 316Ti / 317L / 321 / 321H / 347 / 347H / 904L etc.
UNS No. - UNS S30400, UNS S30403, UNS S31008, UNS S31620, UNS S31603, UNS S31603, UNS S31635, UNS S31703, UNS S32100, UNS S34700, UNS S34709, UNS N08904
EN No. - 1.4301, 1.4307, 1.484, 1.4401, 1.4404, 1.471, 1.4438, 1.441, 1.450, 1.451, 1.4539
Stainless Steel 304H Flange Outer Diameter 1/2" NB TO 64" NB
Stainless Steel 304H Flange Pressure Class Class 150#, Class 300#, Class 400#, Class 600#, Class 900#, Class 1500#, Class 2500# or As Per Custom Requirement
PN 6, PN 10, PN 16, PN 25 and PN 40 etc
Stainless Steel 304H Flange Schedule Sch 10s TO Sch XXS or As Per Custom Requirement
Stainless Steel 304H Flange Facing Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Stainless Steel 304H Flange Dimension ASME B16.5, ASME B16.47 SERIES A, ASME B16.47 SERIES B, ASME B16.36, BS10, EN1092-1:2013, MSS SP44, ASA, API-605, ISO 7005, ISO 15590-3, DIN 2631--2638, DIN 2573-2576, DIN 2527, DIn 2641-2642, DIN 2565-2566, DIN2502, AWWA, AS2129 TABLE C, D, E, F, J etc..
Stainless Steel 304H Flange Types Welding Neck Flange, Slip On Flange, Socket Weld Flange, Lap Joint Flange, Threaded Flange, Blind Flange, Orifice Flanges, Plate Flange, Long Welding Neck Flanges, Weldoflange, Nipoflange, Expander Flange, Reducing Flange, WNRF Flange, SORF Flange, SWRF Flange, Custom Flange as per Drawing etc.
Stainless Steel 304H Flange Other Testing NACE MR0175, Ultrasoung TEST, IGC TEST, Intergranular Corrrosion Test as per ASTM A262 Practice E, Charpy Impact Test, Macro, Grain Size, Hardness, HIC, SSC, Sour Service etc.
Stainless Steel 304H Flange Value Added Services Rolling, Drill, Punch, CNC Machining, Sand Blasting, Shot Blasting, Heat Treatment, Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized
Stainless Steel 304H Flange Packaging Loose / Crate / Wooden Pallet / Wooden Box / Plastic Cloth Wraps
Stainless Steel 304H Flange Shipment & Transportation By Road - Truck / Train Partial Load, Full Load, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 4 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes
Stainless Steel 304H Flange Material Test Certificate Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS, Bureau of Indian Standards BIS Approved ETC

Stainless Steel 304H Flange Chemical Composition and Properties

The chemical composition of grade Stainless Steel 304H Flange is outlined in the following table

C Mn Si P S Cr Ni N
304 0.07max 2.0max 0.75max 0.04max 0.03max min: 18.0 max: 20.0 min: 8.0 max: 10.5
304L 0.03max 2.0max 0.75max 0.04max 0.03max min: 18.0 max: 20.0 min: 8.0 max: 12.0 0.10 max
304H min: 18.0 max:20.0 min: 8.0 max: 10.5 min: 0.04 max:0.10 0.75 max 2.0 max 0.04 max 0.03 max 0.10 max

Stainless Steel 304H Flange Mechanical and Physical Properties

The mechanical properties of grade Stainless Steel 304H Flange are displayed in the following table.

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
304 515 205 40 92 201
304L 485 170 40 92 201
304H 515 205 40 92 201
304H also has a requirement for a grain size of ASTM No 7 or coarser.

Stainless Steel 304H Flange Physical Properties

Physical properties of 304H grade stainless steel in the annealed condition

Grade Density(kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (μm/m/°C) Thermal Conductivity (W/m.K) Specific Heat 0-100°C (J/kg.K) Electrical Resistivity (nΩ.m)
0-100°C 0-315°C 0-538°C at 100°C at 500°C
304/L/H 8000 193 17.2 17.8 18.4 16.2 21.5 500 720

Stainless Steel 304H Flanges Types

  • Stainless Steel 304H Welding Neck Flange
  • Stainless Steel 304H Slip On Flange
  • Stainless Steel 304H Socket Weld Flange
  • Stainless Steel 304H Lap Joint Flange
  • Stainless Steel 304H Threaded Flange
  • Stainless Steel 304H Blind Flange
  • Stainless Steel 304H Orifice Flanges
  • Stainless Steel 304H Long Welding Neck Flanges
  • Stainless Steel 304H Weldoflange
  • Stainless Steel 304H Nipoflange
  • Stainless Steel 304H Expander Flange
  • Stainless Steel 304H Reducing Flange
  • Stainless Steel 304H WNRF Flange
  • Stainless Steel 304H SORF Flange
  • Stainless Steel 304H SWRF Flange
  • Stainless Steel 304H BLRF Flange

Frequently asked questions

What are Stainless Steel 304H Flanges?

Stainless Steel 304H Flanges are forged stainless steel pipe flanges used to join pipe, valves and equipment. Facing, bore and pressure class must match the piping class.

Which standards apply?

Material: ASTM A182 / ASME SA182. Dimensions: ASME B16.5 / B16.47 (or EN 1092-1 for metric packages).

Related forging class?

Also see ASTM A182 F304H flanges for the ASTM A182 forging designation page.

What flange types are available?

Weld neck, slip-on, blind, socket weld, threaded, lap joint, long weld neck, reducing, spectacle blind and RTJ facings.

What belongs on the purchase order?

Grade / A182 class, type and facing, size and pressure class, bore/schedule, quantity, destination, and MTC (EN 10204 3.1 / 3.2). Email sales@savoypipinginc.com.

Stainless Steel 304H Packing Shipment

Stainless Steel 304H Flange is Covered with Plastic Cloth and Packed in Wooden Box, Wooden Pallet and Wooden Fumigated Crate. Our Packaging is Fully Waterproof and Safe for Transport with Proper Strips on Wooden Box, having Lifting Point.

Stainless Steel 304H Flange Exported Countries

We Export Stainless Steel 304H Flanges to Saudi Arabia, Iran, Iraq, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen , Syria, Israel, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Myanmar, Taiwan, Cambodia, Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States Of America, Canada, Mexico, Panama, Costa Rica, Puerto Rico, Trinidad And Tobago, Jamaica, Bahamas, Denmark, Russia, Norway, Germany, France, Italy, United Kingdom, Spain, Ukraine, Netherlands, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Croatia, Slovenia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, The Republic Of Congo, Gabon, Europe, Africa, Asia, North America, South America, Middle East, Far East.etc

Stainless Steel 304H Flanges Supplying in States and Cities

We Supply Stainless Steel 304H Flanges Andhra Pradesh, Arunachal Pradesh, Assam, Bihar, Chhattisgarh, Goa, Gujarat, Haryana, Himachal Pradesh, Jammu and Kashmir, Jharkhand, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Manipur, Meghalaya, Mizoram, Nagaland, Odisha, Punjab, Rajasthan, Sikkim, Tamil Nadu, Telangana, Tripura, Uttar Pradesh, Uttarakhand, West Bengal, Mumbai, Navi Mumbai, Pune, Nashik, Nagpur, Solapur, Kolhapur, Ambernath, Ahmednagar, Latur, Ahmadabad, Surat, Rajkot, Vadodara, Panaji, Madgaon, Chennai, Kolkata, Hyderabad, Bengaluru, Delhi, New Delhi, Ludhiana, Chandigarh, Raipur, Bhopal, Jamshedpur, Vishakhapatnam, Cochin, Ghaziabad, Noida, Gurugram, Bhillai, Durgapur, Vijaywada, Kanpur etc.

Savoy Piping Inc., is a well known worldwide Exporter of Stainless Steel 304H Flanges, Savoy Piping Inc., is committed to provide each and every customer with the highest standard of customer service. We deal in Stainless Steel 304H Flanges in India and Overseas, offering a wide range of Stainless Steel 304H Flanges