904L Stainless Steel Pipe
904L stainless steel pipe is a non-stabilized, high-alloy austenitic stainless steel with low carbon content. It is widely used in applications where the corrosion properties of TP316/L and TP317/L are not adequate. The alloy also offers excellent formability, weldability, and toughness. The addition of copper gives alloy 904L corrosion-resistant properties that are superior to the conventional chrome-nickel stainless steels. Examples include resistance to sulfuric, phosphoric, and acetic acids.
904L stainless steel pipe is a highly alloyed, low-carbon containing, non-stabilized austenitic stainless steel grade. Copper has been added to the alloy of 904L Stainless Steel Pipe. Hence, its resistance to strong reducing acids such as sulfuric acid is very high. The lower content of carbon makes it easier to produce the AISI 904L Welded Pipe according to the specification ASTM A312. Though the content of carbon is lower, these pipes could be used for high-temperature applications. The significant inclusion of nickel in the alloy of ASME SA 312 TP904L makes it possible for the pipes to have an outstanding performance even in elevated settings. Along with being a non-magnetic alloy, the Stainless Steel 904L Pipe also exhibits good resistance to stress-related corrosion cracking. The presence of molybdenum in the alloy reduces the occurrence of crevice corrosion. Along with being used in applications between moderate to high temperatures, the ASTM A312 TP904L is primarily useful for general corrosion applications.
Product Description
| Specification | ASTM A269, ASTM A213, ASTM A312, ASME SA269, ASME SA213, ASME SA312 |
| Grades | 202, 304, 304L, 304H, 304LN, 309S, 310S, 316, 316L, 316H, 316Ti, 316LN, 317L, 321, 321H, 347, 347H, Steel 904L, SMO 254, ALLOY 254, 6MO, 6MOLY, UNS S31254 ETC. |
| Type | Seamless / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish |
| Outer Diameter Size | Seamless – 1/2″ NB TO 18″ NB Welded / ERW- 1″ NB TO 16″ NB EFW – 8″ NB TO 110″ NB |
| Wall Thickness | Schedule 10 to Schedule 160 (3 mm to 100 mm Thickness) |
| Length | 01 Meter to 12.5 Meters, Single Random Length, Double Random Length, And Customized Size. |
| Ends | Plain Ends / Beveled Ends |
| Delivery Conditions | As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Drawn |
| Coating | Electropolish, Mechanical Polish, Satin Finish, Passivate |
| 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 |
| Dimension | All Pipes and tubes are manufactured and inspected/tested to the Relevant standards, including ASTM and ASME |
| Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment |
| Packaging | Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| 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 / 45 Feet Container / High Cube Container / Open Top Container, By Air – Freighter Civil Passenger and Cargo Planes |
| Material Test Certificate | Stainless Steel Pipe Manufacturers 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 |
Chemical Requirements of 904L stainless steel pipe
Alloy 904L (UNS N08904)
Composition %
| C Carbon |
Mn Manganese |
P Phosphorus |
S Sulfur |
Si Silicon |
Cr
Chromium |
Ni
Nickel |
Mo Molybdenum |
N Nitrogen |
Cu Copper |
| 0.020 max | 2.00 max | 0.040 max | 0.030 max | 1.00 max | 19.0–23.0 | 23.0–28.0 | 4.0–5.0 | 0.10 max | 1.00–2.00 |
Mechanical Properties of 904L stainless steel pipe
| Temper | Annealed | |
| Tensile Rm | 71 | ksi (min) |
| Tensile Rm | 490 | MPa (min) |
| R.p. 0.2% Yield | 32 | ksi (min) |
| R.p. 0.2% Yield | 220 | MPa (min) |
| Elongation (2” or 4D gl) | 35 | % (min) |
Physical Properties (Room Temperature) of 904L stainless steel pipe
| Specific Heat (0-100°C) | 450 | J.kg-1.°K-1 |
| Thermal Conductivity | 11.5 | W.m -1.°K-1 |
| Thermal Expansion | 15.8 | μm/μm/°C |
| Modulus Elasticity | 190 | GPa |
| Electrical Resistivity | 9.52 | Ohm-cm |
| Density | 7.95 | g/cm3 |
Fabrication
Alloy 904L is non-magnetic in all conditions and has excellent formability and weldability. The austenitic structure also gives this grade excellent toughness, even down to cryogenic temperatures.
Application
- Air Pollution Control: Used in the scrubbers in coal-fired power plants.
- Chemical Processing: Used in the equipment to produce sulfuric acid, phosphoric acid, inorganic and organic acids, and phosphate fertilizers.
- Metallurgical Processing: Used in the pickling equipment for sulfuric acid.
- Oil and Gas production: Used in offshore processing equipment.
- Pharmaceutical Industry: Used in processing equipment.
- Pulp and Papermaking: Used in processing equipment.
- Seawater and Brackish Water: Used in condensers, heat exchangers, and piping systems.
Application
Agricultural Modernization
Construction Engineering
Environmental Protection Engineering
Food Processing Industry
Intelligent Home Appliances
Medical and Health Field
New Energy Infrastructure
