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ASTM B 677 NO8904 / 904L , ASTM B366 NO8904 / 904L, 1.4539, Stainless Steel Seamless Tube

Categories Stainless Steel Seamless Tube
Place of Origin: China, USA, Korea, UE
Brand Name: YUHONG
Certification: ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
MOQ: 100KGS
Price: negotiable
Packaging Details: Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Delivery Time: 10days->
Payment Terms: T/T, L/C
Supply Ability: 1500 tons per month
Model Number: ASTM B 677 NO8904 / 904L , ASTM B366 NO8904 / 904L, 1.4539,
Applications: Typical applications include,Processing plant for sulphuric, phosphoric and acetic acids,Components
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Yuhong Group Co.,Ltd
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    ASTM B 677 NO8904 / 904L , ASTM B366 NO8904 / 904L, 1.4539, Stainless Steel Seamless Tube

    ASTM B 677 NO8904 / 904L , ASTM B366 NO8904 / 904L, 1.4539, Stainless Steel Seamless Tube


    904L Stainless Steel Pipes and Tubes

    904L is a non-stabilised low carbon high alloy austenitic stainless steel. The addition of copper to this grade gives it greatly improved resistance to strong reducing acids, particularly sulphuric acid. It is also highly resistant to chloride attack - both pitting / crevice corrosion and stress corrosion cracking. This grade is non-magnetic in all conditions and has excellent weldability and formability. The austenitic structure also gives this grade excellent toughness, even down to cryogenic temperatures. 904L does have very substantial contents of the high cost ingredients nickel and molybdenum. Many of the applications in which this grade has previously performed well can now be fulfilled at lower cost by duplex stainless steel 2205 (S31803 or S32205), so it is used less commonly than in the past.

    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:

    NACE MR0175, H2 SERVICE, OXYGEN SERVICE, CRYO SERVICE, etc.

    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.
    Composition
    Table 1. Composition ranges for 904L grade of stainless steels.


    Grade

    C

    Mn

    Si

    P

    S

    Cr

    Mo

    Ni

    Cu

    904L

    min.
    max.

    -
    0.020

    -
    2.00

    -
    1.00

    -
    0.045

    -
    0.035

    19.0
    23.0

    4.0
    5.0

    23.0
    28.0

    1.0
    2.0

    Mechanical Properties
    Table 2. Mechanical properties of 904L grade stainless steels.


    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
    Table 3. Typical physical properties for 904L grade stainless steels.


    Grade

    Density
    (kg/m3)

    Elastic Modulus
    (GPa)

    Mean Co-eff of Thermal Expansion (m/m/C)

    Thermal Conductivity
    (W/m.K)

    Specific Heat 0-100C
    (J/kg.K)

    Elec Resistivity
    (n.m)

    0-100C

    0-315C

    0-538C

    At 20C

    At 500C

    904L

    8000

    200

    15

    -

    -

    13

    -

    500

    850

    Grade Specification Comparison
    Table 4. Grade specifications for 904L grade stainless steels.


    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.

    Possible Alternative Grades
    Table 5. Possible alternative grades to 904L stainless steel.


    Grade

    Why it might be chosen instead of 904L

    316L

    A lower cost alternative, but with much lower corrosion resistance.

    6Mo

    A higher resistance to pitting and crevice corrosion resistance is needed.

    2205

    A very similar corrosion resistance, with the 2205 having higher mechanical strength, and at a lower cost to 904L. (2205 not suitable for temperatures above 300C.)

    Super duplex

    Higher corrosion resistance is needed, together with a higher strength than 904L.

    Corrosion Resistance
    Although originally developed for its resistance to sulphuric acid it also has a very high resistance to a wide range of environments. A PRE of 35 indicates that the material has good resistance to warm sea water and other high chloride environments. High nickel content results in a much better resistance to stress corrosion cracking than the standard austenitic grades. Copper adds resistance to sulphuric and other reducing acids, particularly in the very aggressive "mid concentration" range.
    In most environments 904L has a corrosion performance intermediate between the standard austenitic grade 316L and the very highly alloyed 6% molybdenum and similar "super austenitic" grades.
    In aggressive nitric acid 904L has less resistance than molybdenum-free grades such as 904LL and 310L.
    For maximum stress corrosion cracking resistance in critical environments the steel should be solution treated after cold work.
    Heat Resistance
    Good resistance to oxidation, but like other highly alloyed grades suffers from structural instability (precipitation of brittle phases such as sigma) at elevated temperatures. 904L should not be used above about 400C.
    Heat Treatment
    Solution Treatment (Annealing) - heat to 1090-1175C and cool rapidly. This grade cannot be hardened by thermal treatment.
    Welding
    904L can be successfully welded by all standard methods. Care needs to be taken as this grade solidifies fully austenitic, so is susceptible to hot cracking, particularly in constrained weldments. No pre-heat should be used and in most cases post weld heat treatment is also not required. AS 1554.6 pre-qualifies Grade 904L rods and electrodes for welding of 904L.
    Fabrication
    904L is a high purity, low sulphur grade, and as such will not machine well. Despite this the grade can be machined using standard techniques.
    Bending to a small radius is readily carried out. In most cases this is performed cold. Subsequent annealing is generally not required, although it should be considered if the fabrication is to be used in an environment where severe stress corrosion cracking conditions are anticipated.


    Applications


    • Typical applications include
    • Processing plant for sulphuric, phosphoric and acetic acids
    • Pulp and paper processing
    • Components in gas scrubbing plants
    • Seawater cooling equipment
    • Oil refinery components
    • Wires in electrostatic precipitators

    904L
    Chemical Composition %

    CCrCuMnMoNiPSSi
    MaxMaxMaxMaxMax
    0.0219.0-23.01.0-2.02.04.0-5.023.0-28.00.0450.0351.0


    AVAILABILITY
    Seamless Pipe 1/2" W
    SPECIFICATIONS
    ASTM B677, B366
    ASME SB677, SB366


    DESIGN FEATURES
    Good resistance to pitting and crevice corrosion.
    Very good resistance to stress corrosion cracking.
    Good resistance to intergranular corrosion.
    Good formability and weldability.
    Maximum service temperatures of
    450 deg.C. (824 deg.F).

    TYPICAL APPLICATIONS
    Production and transport of sulfuric acid
    Metal pickling in sulfuric acid
    Production and concentration of phosphoric acid
    Use in seawater, brackish water, condensers, heat exchangers and pipe work in general
    Paper and allied industries
    Gas washing
    Chemical and pharmaceutical industries

    TENSILE REQUIREMENTS
    Tensile Strength (KSI) 70
    Yield Strength (KSI) 25
    KSI can be converted to MPA (Megapascals) by multiplying by 6.895.


    Some of the quality tests carried out by us includes:

    Corrosion TestConducted only when specially requested by the client
    Chemical AnalysisTest done as per required quality standards
    Destructive / Mechanical TestingTensile | Hardness | Flattening | Flare | Flange
    Reverse-bend and Re. flat testsCarried out in full compliance with relevant standards & ASTM A-450 and A-530 norms, which ensures trouble-free expansion, welding & use at customers end
    Eddy Current TestingDone to detect homogeneities in subsurface by using Digital Flaw-mark Testing System
    Hydrostatic Testing100% Hydrostatic Testing carried out according to ASTM-A 450 norms for checking tube leakage, and biggest pressure we can support 20Mpa/7s .
    Air Under Pressure TestTo check any evidence of air leakage
    Visual InspectionAfter passivation, every single length of tubes & pipes is subjected to thorough visual inspection by trained staff for detecting surface flaws & other imperfections


    Supplementary Testing : Apart from the above mentioned tests, we also carry out on the manufactured products supplementary testing. The tests conducted under this include:

    • Eddy Current Testing
    • O.P Testing
    • Radiography Testing
    • Corrosion Testing
    • Micro Testing
    • Macro Testing
    • IGC Testing
    • Ultrasonic testing
    • Liquid Penetrate testing

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