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10CrMo9-10,(EN 10216-2,)成分,性能
10CrMo9-10(EN 10216-2)的成分和性能
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规格: DN20-DN3000
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    EN 10216-2 Seamless steel tubes for pressure purposes – Technical delivery conditions – part 2: Non- alloy and alloy steel tubes with specified elevated temperature

     

    This Part of EN10216 specifies the technical delivery conditions in two categories for seamless tubes of circular cross section, with specified elevated temperature properties, made of non-alloy and alloy steel.

     

    Steel Grade: 10CrMo9-10  Steel Number: 1.7380

     

    Chemical composition (cast analysis)a, in % by mass

    C0.08-0.14 

    Si≤0.50

    Mn0.30-0.70

    P≤0.025

    S≤0.020

    Cr: 2.00-2.50

    Mo0.90-1.10

    Ni≤0.30

    Al total≤0.040

    Cu≤0.30 b

    Elements not included in this Table shall not be intentionally added to the steel without the agreement of the purchaser, except for elements which may be added for finishing the cast. All appropriate measures shall be taken to prevent the addition of undesirable elements from scrap or other materials used in the steel making process.

    b Option: In order to facilitate subsequent forming operations, an agreed maximum copper content lower than indicated and an agreed specified maximum tin content shall apply.

     

    Heat treatment:

    Normalizing at 900 - 960 ℃ + Tempering at 680 - 750 

    Cooling medium: air

     

     

    Mechanical properties

    Tensile properties at room and below room temperature

    Upper yield strength or proof strength ReH or RP0.2 for Wall Thickness T min.

    Wall thickness mm

    Mpa

    T ≤16

    280

    16<T≤40

    280

    40<T≤60

    270

    Tensile Strength, Rm, Mpa: 480 to 630

    Elongation A, min. %:

    Longitudinal

    Transverse

    22

    20

     

    Impact properties(option):

    Minimum average absorbed energy KV J at a temperature of 20℃

    Longitudinal

    Transverse

    40

    27

     

    Minimum proof strength Rp0.2 Mpa at elevated temperature ℃(option)

    Wall thickness, mm: ≤60

     Temperature 

    Mpa

    100

    264

    150

    253

    200

    245

    250

    236

    300

    192

    350

    182

    400

    174

    450

    168

    500

    166

     

    Tolerance on outside diameter and wall thickness

    For outside diameter: ±1% or 0.5mm whichever is the greater

    For wall thickness:

    OD

    Tolerances on T for a T/D ratio

    ≤0.025

    >0.025≤0.050

    >0.050 ≤0.10

    >0.10

    D≤219.1

    12.5% or 0.4mm whichever is the greater

    D>219.1

    20%

    15%

    12.5%

    10%

    For outside diameter D≥355.6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T

    Tolerance on exact lengths

    Length L

    Tolerance on exact length

    ≤ 6000

    0, +10

    6000<L ≤12000

    0, +15

    L>12000

    0, by agreement