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EN10216-5 Stainless Steel Seamless Tube

Categories Stainless Steel Seamless Tube
Place of Origin: China, India, USA, Korea, UE
Brand Name: XINHANG
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
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Yuhong Group Co.,Ltd
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    EN10216-5 Stainless Steel Seamless Tube

    Stainless Steel Seamless Tube, A213, A269, EN10216-5, DIN 17459, JIS-G3459 , GOST9941


    ASTM A / ASME SA 312 / 269 / 317L Stainless Steel Pipes SCH10 / 10S, SCH20, SCH30, SCH40/40S, STD, SCH80/80S, XS,


    317L Stainless Steel Seamless Pipes and Tubes

    Alloy 317L (UNS S31703) is a molybdenum-bearing austenitic stainless steel with greatly increased resistance to chemical attack as compared to the conventional chromium-nickel austenitic stainless steels such as Alloy 304. In addition, Alloy 317L offers higher creep, stress-to-rupture, and tensile strength at elevated temperatures than conventional stainless steels. It is a low carbon or "L" grade which provides resistance to sensitization during welding and other thermal processes.


    317L Stainless Steel Pipes and Tubes Product Range
    317L Stainless Steel Pipes and Tubes Specifications: ASTM A/ASME SA 312/269/213/358 317L Stainless Steel Pipes and Tubes Sizes (Seamless): 1/2" NB - 8" NB
    317L Stainless Steel Pipes and Tubes Sizes (ERW): 1/2" NB - 24" NB
    317L Stainless Steel Pipes and Tubes Sizes (EFW): 6" NB - 100" NB
    317L Stainless Steel Pipes and Tubes Wall Thickness available:
    Schedule 5S - Schedule XXS (heavier on request)


    317L Stainless Steel Pipes and Tubes Other Materials Testing:

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

    317L Stainless Steel Pipes and Tubes Dimensions:
    All Pipes is manufactured and inspected/tested to the relevant standards including ASTM, ASME and API etc.


    General Properties


    Alloy 317LMN and 317L are molybdenum-bearing austenitic stainless steels with greatly increased resistance to chemical attack as compared to the conventional chromium-nickel austenitic stainless steels such as Alloy 304. In addition, 317LMN and 317L alloys offer higher creep, stress-to-rupture, and tensile strengths at elevated temperatures than conventional stainless steels. All are low carbon or "L" grades to provide resistance to sensitization during welding and other thermal processes. The "M" and "N" designations indicate that the compositions contain increased levels of molybdenum and nitrogen respectively. The combination of molybdenum and nitrogen is particularly effective in enhancing resistance to pitting and crevice corrosion, especially in process streams containing acids, chlorides, and sulfur compounds at elevated temperatures. Nitrogen also serves to increase the strength of these alloys. Both alloys are intended for severe service conditions such as flue gas desulfurization (FGD) systems.


    Composition



    Chemical Composition in Weight Percent
    per ASTM A240 for Cited Alloys

    Element

    Type 317L

    Type 317LMN

    Carbon

    0.03 max

    0.03 max

    Manganese

    2.00

    2.00

    Silicon

    0.75 max

    0.75 max

    Chromium

    18.00 20.00

    17.00 20.00

    Nickel

    11.00 15.00

    13.50 17.50

    Molybdenum

    3.00 4.00

    4.00 5.00

    Phosphorus

    0.04 max

    0.04 max

    Sulfur

    0.03 max

    0.03 max

    Nitrogen

    0.10 max

    0.10 0.20

    Iron

    Balance

    Balance

    UNS No.

    S31703

    S31726


    Resistance to Corrosion


    Alloys 317L and 317LMN stainless steels are more resistant to atmospheric and other mild types of corrosion than conventional chromium-nickel stainless steels. In general, environments that are not corrosive to 18Cr-8Ni steels will not attack alloys containing molybdenum, with the exception of highly oxidizing acids such as nitric acid.
    Alloys 317LMN and 317L stainless steels are considerably more resistant than conventional chromium-nickel types to solutions of sulfuric acid. Resistance increases with alloy molybdenum content. These alloys are resistant to sulfuric acid concentrations up to 5 percent at temperatures as high as 120 F (49C). At temperatures under 100 F (38 C) these alloys have excellent resistance to solutions of higher concentration. However, service tests are recommended to account for the affects of specific operating conditions that may affect corrosion behavior. In processes where condensation of sulfur-bearing gases occurs, these alloys are much more resistant to attack at the point of condensation than conventional Alloy 316. The acid concentration has a marked influence on the rate of attack in such environments and should be carefully determined by service tests.
    The table below compares the corrosion resistance of annealed strip samples of 317LMN and 317L stainless steels in a variety of solutions related to the process industries as well as standard ASTM tests. Data on Alloy 316L and Alloy 276 are presented for comparison.



    Corrosion Resistance in Boiling Solutions and ASTM Tests

    Test
    Solution

    Corrosion Rate in Mils per Year (mm/y)
    for Cited Alloys

    Alloy
    316L

    Alloy
    317L

    Alloy
    317LMN

    Alloy
    276

    20%
    Acetic Acid

    0.12
    (<0.01)

    0.48
    (0.01)

    0.12
    (<0.01)

    0.48
    (0.01)

    45%
    Formic Acid

    23.41
    (0.60)

    18.37
    (0.47)

    11.76
    (0.30)

    2.76
    (0.07)

    10%
    Oxalic Acid

    48.03
    (1.23)

    44.90
    (1.14)

    35.76
    (0.91)

    11.24
    (0.28)

    20%
    Phosphoric
    Acid

    0.06
    (0.02)

    0.72
    (0.02)

    0.24
    (<0.01)

    0.36
    (0.01)

    10%
    Sulfuric Acid

    635.7
    (16.15)

    298.28
    (7.58)

    157.80
    (4.01)

    13.93
    (0.35)

    10%
    Sodium
    Bisulfate

    71.57
    (1.82)

    55.76
    (1.42)

    15.60
    (0.40)

    2.64
    (0.07)

    50%
    Sodium
    Hydroxide

    77.69
    (1.92)

    32.78
    (0.83)

    85.68
    (2.18)

    17.77
    (0.45)

    ASTM A262
    Practice B
    (FeSO4H2SO4)

    26.04
    (0.66)

    20.76
    (0.53)

    17.28
    (0.44)

    264.5
    (6.72)

    ASTM A262
    Practice C
    (65% HNO3)

    22.31
    (0.56)

    19.68
    (0.50)

    16.32
    (0.42)

    908.0
    (23.06)

    ASTM A262
    Practice E
    (CuUSO4 2SO4)

    Pass

    Pass

    Pass

    Pass


    The low carbon (less than 0.03%) of these alloys effectively prevents sensitization to intergranular corrosion during thermal processes such as welding or forging. The higher chromium contents of 317LMN and Alloy 317L stainless steels also provide superior resistance to intergranular attack. It should be noted that prolonged exposure in the range 800 to 1400F (427-816C) can be detrimental to intergranular corrosion resistance and may also cause embrittlement due to precipitation of sigma phase. The higher nitrogen content of the 317LMN alloy retards the precipitation of sigma phase as well as carbides.



    Pitting Resistance Equivalents

    Alloy

    PRE

    Alloy 316

    25

    Alloy 317L

    30

    Alloy 317LMN

    38

    Alloy 625

    52

    Alloy C276

    69


    High molybdenum and nitrogen contents can significantly improve pitting resistance as illustrated in the preceding table of Pitting Resistance Equivalents (PRE). The PRE is based on the results of corrosion tests in which it was found that nitrogen was 30 times more effective than chromium and approximately 9 times more effective than molybdenum in enhancing chloride pitting resistance.
    The temperature of the onset of crevice corrosion as determined in a modified AST G-48B test is a useful means of ranking the relative resistance of stainless and nickel-base alloys. The Critical Crevice Corrosion Temperatures table that follows demonstrates that crevice corrosion resistance for austenitic stainless steels increases with the alloy molybdenum and nitrogen content.



    Crevice Corrosion in a Simulated
    FGD System Environment

    Alloy

    Weight Loss (g/cm2)
    for Tests* at Cited Temperatures

    24C
    (75F)

    50C
    (122F)

    70C
    (158F)

    Alloy 317L

    0.0007

    0.0377

    0.0500

    Alloy 317LMN

    0.0000

    0.0129

    0.0462

    Alloy 625

    0.0000

    0.0000

    0.0149

    Alloy C276

    0.0000

    0.0001

    0.0004


    *72-hour exposure based on ASTM G-48B procedure using the following solution:
    7 vol.%H2SO4, 3 vol%HCI, 1 wt% CuCl2, 1 wt%FeCl3
    Oxidation Resistance
    The chromium-nickel-molybdenum steels all have excellent resistance to oxidation and a low rate of scaling in ordinary atmospheres at temperatures up to 1600-1650F (871-899C).
    Fabrication
    The physical and mechanical properties of 317LMN and Alloy 317L stainless steels are similar to those of more conventional austenitic stainless steels and can, therefore, be fabricated in a manner similar to Alloys 304 and 316.
    Heat Treatment
    Forging
    The recommended initial temperature range is 2100-2200F (1150-1205C) with a finishing range of 1700-1750F (927-955C).
    Annealing
    317LMN and Alloy 317L stainless steels can be annealed in the temperature range 1975-2150F (1080-1175C) followed by an air cool or water quench, depending on thickness. Plates should be annealed between 2100F (1150C) and 2150F (1175C). The metal should be cooled from the annealing temperature (from red/white to black) in less than three minutes.
    Hardenability
    These grades are not hardenable by heat treatment.
    The use of an overalloyed filler is suggested to maintain corrosion resistance in the as-welded condition. Filler metals containing at least 6% molybdenum are suggested for welding Alloy 317L and a filler metal with at least 8% molybdenum, such as Alloy 625, is suggested for 317LMN. In applications where it is not possible to use an overalloyed filler metal or to perform a post-weld anneal and pickle treatment, the severity of the service environment should be carefully considered to determine if the properties of autogenous welds (weld made without a filler) are satisfactory. The optimum corrosion resistance of autogenously welded 317LMN and Alloy 317L stainless steels is obtained by post-weld annealing and pickling. ASTM A-380 ecommended Practice for Descaling and Cleaning Steel Surfaces is suggested for more information.
    Mechanical Properties
    The ASTM specified minimum tensile properties and maximum hardness for annealed plate, sheet, and strip products are shown in the following table.



    Minimum Mechanical Properties per
    ASTM A-240 for Cited Alloys

    Property

    Alloy 317L

    Alloy 317LMN

    Ultimate Tensile Strength, ksi (MPa)

    75
    (515)

    80
    (550)

    0.2% Yield Strength, ksi (MPa)

    30
    (205)

    35
    (240)

    % Elongation in 2 (5.1 cm)

    40

    40

    Hardness, Maximum

    217BHN


    UNS No.

    S31703

    S31726


    Physical Properties
    The physical property data which follows represent the iron-chromium-nickel-molybdenum class of stainless steels. For all practical purposes, the data are applicable to 317LMN and Alloy 317L stainless steels. All properties are at room temperature (68 F, 20C) unless stated otherwise.



    Density

    0.29
    8.0

    lb/in3
    g/cm3

    Modulus of Elasticity

    29 106
    200

    psi
    Gpa

    Melting Range

    2410 to 2550
    1320 to 1400

    F
    C

    Thermal Conductivity
    68 to 212F
    20 to 100C

    100.8
    14.6

    Btu/ft2-hr-F-in
    Watts/m- K

    Coefficient of Thermal Expansion
    77F (25C) to:
    212F (100C)
    932F (500C)
    1832F (1000C)

    9.2 (16.5)
    10.1 (18.2)
    10.8 (19.5)

    10-6/F (10-6/C)
    10-6/F (10-6/C)
    10-6/F (10-6/C)

    Specific Heat

    0.11
    0.46

    Btu/lb-F
    J/g-K

    Electrical Resistivity

    31.1
    0.79

    -ohm-in
    -ohm-in

    Magnetic Permeability
    Fully annealed
    0.5" plate
    65% cold-worked 0.5" plate

    1.0028
    1.0028

    at H = 200 oe
    at H = 200 oe


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