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EN 10088 Grade 1.4539 / 904L Stainless Steel Pipe Tube Pickling Finishing Free Cutting
Specification
| Products | Stainless Steel Seamless Pipe |
| Steel Grade | 904L |
| Standard | ASTM EN DIN JIS GB |
| OD range | Seamless:12-506mm Welded:10-2000mm |
| WT range | Seamless:1-30mm Welded:1-40mm |
| Length Range | 4-9meter; Random Length; Fixed Length |
| Forming | Hot finished; Cold Rolled; Cold Drawn; ERW welded |
| Heat-treat | Solution |
| Surface | Acid Pickled; Polished |
| Inspection | Chemical; Tensile; Hardness; UT; Eddy Current |
| Package | Steel rope or wooden case |
| MOQ | 1 tons |
| Delivery Time | 10-30 days |
| Trade Item | FOB CIF CFR PPU PPD |
alloy 904L tubing (UNS N08904) for use in applications that require moderate to high corrosion resistance. Alloy 904L is a low carbon high alloy austenitic stainless steel, originally developed to resist corrosion in dilute sulfuric acid. Because of the combination of chromium, nickel, molybdenum and copper, this grade has greatly improved resistance to strong reducing acids, particularly sulfuric acid. Alloy 904L tubing is also extremely resistant to chloride attack from both pitting/crevice corrosion and stress corrosion cracking. Alloy 904L is non-magnetic in all conditions, possesses amazing toughness, and has good formability and weldability.
Because of these properties, one can find alloy 904L tube in many applications. These range from utility scrubber assemblies to acid and fertilizer production equipment, pulp and paper processing, seawater cooling facilities. Used in processes containing sulfuric or phosphoric acids, 904L displays its excellent resistance to corrosion from those acids. The paper, gas, pharmaceutical and chemical industries also use 904L for its resistance and use to 400-450 degrees C. Alloy 904L tubing can be welded, machined, heat treated, annealed, hardened and cold worked for many purposes.
UNS NO8904, commonly known as 904L, is a low carbon high alloy austenitic stainless steel which is widely used in applications where the corrosion properties of AISI 316L and AISI 317L are not adequate.
The addition of copper to this grade gives it corrosion resistant properties superior to the conventional chrome nickel stainless steels, in particular to sulphuric, phosphoric and acetic acids. However, there is limited use with hydrochloric acids. It also has a high resistance to pitting in chloride solutions, a high resistance to both crevice and stress corrosion cracking. Alloy 904L performs better than other austenitic stainless steels due to the higher alloying of nickel and molybdenum.
The grade 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.
The high chromium content promotes and maintains a passive film which protects the material in many corrosive environments.904L has a greater resistance to precipitation of ferrite and sigma phases on cooling and welding than other stainless steels containing molybdenum such as 316L and 317L. There is no risk of intercrystalline corrosion on cooling or welding due to the low carbon content. Its maximum service temperature is at 450°C.
This grade is particularly useful in control and instrumentation tubing applications where 316 and 317L are not suitable.
904L stainless steel combines molybdenum and copper with iron for tremendously increased resistance to reducing acids like sulphuric acid. It stands up extremely well to chlorides in the environment for low pitting and crevice corrosion, as well as stress corrosion cracking.
904L Stainless Steel Pipes and Tubes Product Range 904L Stainless Steel Pipes and Tubes Specifications: ASTM A/ASME SA 269/677 904L Stainless Steel Pipes and Tubes Sizes (Seamless): 1/2″ NB – 8″ NB 904L Stainless Steel Pipes and Tubes Sizes (ERW): 1/2″ NB – 24″ NB 904L Stainless Steel Pipes and Tubes Sizes (EFW): 6″ NB – 100″ NB
904L Stainless Steel Pipes and Tubes Wall Thickness available: Schedule 5S – Schedule XXS (heavier on request) » 904L Stainless Steel Pipes and Tubes Other Materials Testing:
»904L Stainless Steel Pipes and Tubes Dimensions: All Pipes is manufactured and inspected/tested to the relevant standards including ASTM, ASME and API etc. Key Properties These properties are specified for flat rolled product (plate, sheet and coil) in ASTM B625. Similar but not necessarily identical properties are specified for other products such as pipe, tube and bar in their respective specifications.
Applications
904L stainless steel is widely used in the chemical, pharmaceutical, oil and gas industries. Typical applications include tanks, valves, heat exchangers, flanges and manifolds. The addition of copper to the composition of 904L stainless steel aids its suitability for components such as tanks and other products used in handling sulphuric and phosphoric acid.
Quality Standard
ASTM A182 Standard Specification for Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings, and Valves and Parts
EN 10088 part3 stainless steel
Available tube product forms
Typical Applications
Typical manufacturing specifications
Also individual customer specifications.
Mechanical Properties
| 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)
| 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 | μohm/cm |
| Density | 7.95 | g/cm3 |
Chemical Composition Of SS 904L Pipes & SS 904L Tubes:
| Steel Grade | C | Si | Mn | P | S | Cr | Ni | Mo | Cu | N |
| 904L | 0.02 max | 1.0 max | 2.0 max | 0.040 max | 0.030 max | 19.0-23.0 | 23.0-28.0 | 4.0-5.0 | 1.0-2.0 | 0.10 max |
Mechanical properties Of SS 904L Pipes & SS 904L Tubes:
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) | Brinell (HB) | ||||
| 904L | 490 | 220 | 35 | 70-90 typical | – |
| Rockwell Hardness value range is typical only; other values are specified limits. | |||||
Physical Properties Of Stainless Steel 904L Pipes & Stainless Steel 904L Tubes:
| Grade | Density
(kg/m3) | Elastic Modulus
(GPa) | Mean Co-eff of Thermal Expansion (µm/m/°C) | Thermal Conductivity
(W/m.K) | Specific Heat 0-100°C
(J/kg.K) | Elec Resistivity
(nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | At 20°C | At 500°C | |||||
| 904L | 8000 | 200 | 15 | – | – | 13 | – | 500 | 850 |
Grade specifications
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 904L | N08904 | 904S13 | – | 1.4539 | X1NiCrMoCuN25-20-5 | 2562 | – |
| 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. | |||||||
Corrosion Resistance
Where a level of resistance to pitting corrosion better than 316 is required 904L stainless steel may be suitable. With its high nickel content at 25% it offers improved resistance to chloride stress corrosion cracking compared to other austenitic grades such as 304.
Welding
904L stainless steel can be welded using common fusion and resistance methods. A more highly alloyed filler is recommended to give the optimum corrosion properties in the weld. We recommend you contact your welding consumables supplier who should provide you full assistance and information on welding 904L stainless steel.
| Material | Alloy 904L 1.4539 N08904 X1NiCrMoCu25-20-5 |
| Alloy 904l Tubing Standards | ASTM B/ASME SB674 / SB677, ASTM A312/ ASME SA312 |
| Standard Specification for UNS N08904 Tubes | ASTM B677 UNS N08904, ASTM B673 UNS N08904, ASTM B674 UNS N08904 |
| Seamless Tube Size | 3.35 mm OD To 101.6 mm OD |
| Welded Tube Size | 6.35 mm OD To 152 mm OD |
| Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| Schedule | SCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| AISI 904l Tube wall thickness | 0.020″ –0.220″, (special wall thicknesses available) |
| Manufacturing Specifications | ASTM A312
ASTM A213 ASTM A269 BS EN 10216 pt.5 As per customer’s specifications. |
| Length | Single Random, Double Random, Standard & Cut length |
| Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
| 904L Steel Pipe Form | Straight, Coiled, Square Pipes/ Tubes, Rectangular Pipe/ Tubes, Coiled Tubes, Round Pipes/ Tubes, “U” Shape for heat exchangers, Hydraulic Tubes, Pan Cake Coils, Straight or ‘U’ bent Tubes, Hollow, LSAW Tubes Etc. |
| 904l Stainless Tube Type | Seamless, ERW, EFW, Welded, Fabricated |
| End | Plain End, Beveled End, Treaded |
| Marking | All Stainless Steel 904L tubes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.) |
| Application | Oil Tube, Gas Tube, Fluid Tube, Boiler and Heatexchanger |
| Value Added Service | Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc. |
| Specialize in | 904L Stainless Steel Capillary Tube & Other Odd Size 904L Stainless Steel Heat Exchanger & Condenser Tubes |
| Top 10 Manufacturer of 904L Tubes | Posco Korea, VDM Germany, Tubacex, Nippon Steel Corporation, Sumitomo Japan, Indian Mills, Walsin, SP Metal, RONSCO, BAOSTEEL, JISCO, TISCO |
| Test Certificate | Manufacturer Test Certificate Laboratory Test Certificate from Govt. Approved Lab. Under Third Party Inspection |
| Manufacturers of 904L Stainless Steel Tubes & Tubing | Sumitomo Metals, Japan
Nippon Steel Corporation, Japan Kobe Special Tube, Japan Sanyo Special Steel, Japan Tubacex Tubos Inoxidables S.A., Spain Schoeller Bleckmann, Austria Seah Steel Corporation, Korea |
904L Stainless Steel Seamless Tubes Surface Finish
| Surface Finish | Internal Surface(ID) | Exterbal Surface(OD) | |||
| Roughness Average(RA) | Roughness Average(RA) | ||||
| μ inch | μm | μ inch | μm | ||
| AP | Annealed & Pickled | Not defined | Not defined | 40 or Not defined | 1.0 or Not defined |
| BA | Beight Annealed | 40,32,25,20 | 1.0,0.8,0.6,0.5 | 32 | 0.8 |
| MP | Mechanical Polish | 40,32,25,20 | 1.0,0.8,0.6,0.5 | 32 | 0.8 |
| EP | Electro Polish | 15,10,7,5 | 0.38,0.25,0.20;0.13 | 32 | 0.8 |
