304H Stainless Steel
904L is an austenitic grade stainless steel with low carbon and higher resistance to stress and crevice corrosion cracking as compared to AISI 316 & AISI 317 stainless steel grades. Due to addition of Copper, it has increased resistance to phosphoric, sulphuric and hydrochloric acid concentration. It is sometimes referred to as super austenitic stainless steel due to superiority over other 300 series austenitic steel grades. 904L is also resistant to chloride and sea water attack. 904L is primarily used in production and transport of phosphoric acid as well as in environment containing concentrations of phosphoric acid or phosphorous gas.
Kindly browse through available product list, specification and properties of 904L.
View Technical Information Download 304H Data Sheet
304H Products
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304H Pipes
Sizes : 3/8 to 72 inch NPS.
Length : Single Random (5-7 Meters).
Wall Thickness : Sch 5/5S to Sch 160/XXS.
Material : ASTM A312, ASTM B673 Type 904L (UNS N08904).
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304H Tubing
Sizes : 1/8 upto 6 inch.
Length : upto 18 meters.
Wall Thickness : 0.5mm to 12mm.
Material : ASTM A269 Type 904L (UNS N08904).
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304H Pipe Fittings
Sizes : 1/2" to 48" NPS.
Length : upto 18 meters.
Wall Thickness : Sch 5/5S to Sch 160/XXS.
Material : ASTM A182, A240, A403 Type 904L (UNS N08904).
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304H Flanges
Sizes : 1/2" to 48" NPS.
Standards : ANSI, ASME, EN 1092-1, DIN, etc.
Pressure Ratings : 150 lbs to 2500 lbs.
Material : ASTM A182 F904L, ASTM A240 Type 904L (UNS N08904).
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304H Valves
Sizes : 1/2" to 48" NPS.
Construction : Forged, Cast & Bar Machined.
Dimensions : ASME / ANSI B16.34, API, BS, ISO, DIN standards, etc.
Material : ASTM A182 F904L, 904L.
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304H Fasteners
Sizes : Metric M1 to M152.
Length : upto 1000mm.
Dimensions : DIN, ISO, UNI & ASME.
Material : ASTM A182 F904L, A240, A276, A479 Type 904L (UNS N08904).
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304H Forgings
Construction : Open & Close Die Forgings.
Dimensions : Standard & Customized.
Weight : 5 grams to 5000 kilograms.
Material : ASTM A182 F904L (UNS N08904).
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304H Plates
Thickness : 1mm to 100mm.
Length : Upto 12000mm or Coil form.
Finish : Pickled, Mill Finish, Brushed.
Material : ASTM A240 Type 904L (UNS N08904).
Other 304H Products
- SAW Pipes
- Pipe Strainers
- Tube Fittings
- Dish Ends
- Bars
- Wire Mesh
- Welding Wires
- Perforated Sheets & Plates
304H Equivalent Grade Designation
| AISI | UNS | DIN / EN / Werkstoff Number | Euronorm / DIN Name | Swedish | Brand Name |
|---|---|---|---|---|---|
| 904L | N08904 | 1.4539 | X1-Ni-Cr-Mo-Cu-25-20-5 | SS 2562 | URANUS® B6 |
304H Properties
304H Chemical Composition | ||||||||||
| Elements | Carbon | Manganese | Phosphorus | Sulphur | Silicon | Chromium | Nickel | Molybdenum | Nitrogen | Copper |
|---|---|---|---|---|---|---|---|---|---|---|
| Compositions by % | 0.02 max | 2.00 | 0.045 | 0.035 | 1.00 | 19.0 - 23.0 | 23.0 - 28.0 | 4.0 - 5.0 | 0.1 | 1.0 - 2.0 |
304H Mechanical Properties | ||||
| Tensile Strength, min | Yield Strength, min | Elongation, min | Reduction of Area, min | Hardness |
|---|---|---|---|---|
| 490 MPa | 220 MPa | 35% | ||
304H Product Specifications
| Seamless / Welded Pipe | ASTM A312 TP 904L |
|---|---|
| Seamless / Welded Tubing | ASTM A269 TP 904L |
| Bar / Rod | ASTM A276 / A479 TP 904L |
| Forging | ASTM A182 F904L |
| Sheet / Plate | ASTM A240 UNS N08904 |
| Welding Consumable | AWS A5.9 ER385 |