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Savoy Piping Inc. supplies ASTM A213 TP304H seamless tubes — the higher-carbon 18/8 grade for elevated-temperature strength where 304L would be under-specified.
Grade hub · A312 Seamless · A312 Welded · A213 · A269 · A358 EFW · SS hub
Also see: Stainless seamless tube hub · SS pipe & tube hub · Instrumentation tubes.
304H seamless tube for heat-transfer service. Chemistry: 18Cr-8Ni high carbon (C typically 0.04–0.10%). strength levels per SA-312 for TP304H — confirm PO; intended for elevated-temperature service.
Use 304H only when the design temperature / code calls for H-grade carbon. Do not dual-cert confuse with 304L stock for creep service. Confirm OD × average/min wall, length and U-bend needs on the enquiry.
| ASTM A213 TP304H Stainless Steel Seamless Pipes Specification | ASTM A269, ASTM A213, ASTM A312, ASME SA269, ASME SA213, ASME SA312 |
| ASTM A213 TP304H Stainless Steel Seamless Pipes Grades | 202, 304, 304L, 304H, 304LN, 309S, 310S, 316, 316L, 316H, 316Ti, 316LN, 317L, 321, 321H, 347, 347H, 904L, SMO 254, ALLOY 254, 6MO, 6MOLY, UNS S31254 ETC. |
| ASTM A213 TP304H Stainless Steel Seamless Pipes Type | Seamless / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish |
| ASTM A213 TP304H Stainless Steel Seamless Pipes Outer Diameter Size | Seamless - 1/2" NB TO 18" NB Welded / ERW- 1" NB TO 16" NB EFW - 8" NB TO 110" NB |
| ASTM A213 TP304H Stainless Steel Seamless Pipes Wall Thickness | Schedule 10 to Schedule 160 (3 mm to 100 mm Thickness) |
| ASTM A213 TP304H Stainless Steel Seamless Pipes Length | 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size. |
| ASTM A213 TP304H Stainless Steel Seamless Pipes Ends | Plain Ends / Beveled Ends |
| ASTM A213 TP304H Stainless Steel Seamless Pipes Delivery Conditions | As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw |
| ASTM A213 TP304H Stainless Steel Seamless Pipes Coating | Electropolish, Mechanical Polish, Satin Finish, Passivated |
| ASTM A213 TP304H Stainless Steel Seamless Pipes Other Testing | Product Analysis, Transverse Tension Test, Flattening Test, Etching Test, Radiograph HIC Examination, Stabilizing Heat Treatment, Intergranular Corrosion Test, Weld Decay Test, Magnetic Particle Detection, Grain Size Test, NACE 0175, Dual Grade, PWHT (POST WELD HEAT TREATMENT), Flare Test, Bend Test, Hardness Test, Tensile Test etc |
| ASTM A213 TP304H Stainless Steel Seamless Pipes Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM And ASME |
| ASTM A213 TP304H Stainless Steel Seamless Pipes Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment / Annealed / Bright Annealed |
| ASTM A213 TP304H Stainless Steel Seamless Pipes Packaging | Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| ASTM A213 TP304H Stainless Steel Seamless Pipes Shipment & Transportation | By Road - Truck / Train, 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 |
| ASTM A213 TP304H Stainless Steel Seamless Pipes 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 ETC |
The chemical composition of grade 304H Stainless Steel is outlined in the following table
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 304 | min. | - | - | - | - | - | 18.0 | - | 8.0 | - |
| max. | 0.08 | 2.0 | 1.00 | 0.045 | 0.030 | 20.0 | 11.0 | 0.10 | ||
| 304L | min. | - | - | - | - | - | 18.0 | - | 8.0 | - |
| max. | 0.035 | 2.0 | 1.00 | 0.045 | 0.030 | 20.0 | 12.0 | 0.10 | ||
| 304H | min. | 0.04 | - | - | - | - | 18.0 | - | 8.0 | - |
| max. | 0.10 | 2.0 | 1.00 | 0.045 | 0.030 | 20.0 | 11.0 | |||
The Mechanical Properties of grade 304H Stainless Steel 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. | |||||
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 |
Grade specifications for 304H grade stainless steel
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 304 | S30400 | 304S31 | 58E | 1.4301 | X5CrNi18-10 | 2332 | SUS 304 |
| 304L | S30403 | 304S11 | - | 1.4306 | X2CrNi19-11 | 2352 | SUS 304L |
| 304H | S30409 | 304S51 | - | 1.4948 | X6CrNi18-11 | - | - |
| These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted. | |||||||
The grade 304H steel can be made into plates, sheets, and coils to be used in the following:
A213 covers seamless ferritic and austenitic alloy steel boiler, superheater and heat-exchanger tubes. TP304H is the 304H austenitic grade (UNS S30409).
A213 is the boiler/HX tube specification with tighter heat-transfer product rules. A269 is general-service stainless tube.
A312 is pipe; A213 is tube for heat-transfer duty. Do not interchange names on the PO.
High-temperature process and heat-transfer piping; Refinery and chemical plant hot services within austenitic limits; Boiler / heater related stainless lines where H-grade is specified
We export ASTM A213 TP304H Stainless Steel Seamless Pipes 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
Savoy Piping Inc. is a well known worldwide Exporter of ASTM A213 TP304H Stainless Steel Seamless Pipes, Savoy Piping Inc. is committed to provide each and every customer with the highest standard of customer service. We deal in ASTM A213 TP304H Stainless Steel Seamless Pipe in India and Overseas, offering a wide range of ASTM 213 TP304H Stainless Steel Seamless Pipes .