What are the performance ingredients of SNCM439?

Updated on healthy 2024-03-26
7 answers
  1. Anonymous users2024-02-07

    SNCM439 is an alloy structural steel, corresponding to the British grades 817M40, 816M40.

    SNCM439 Chemical Composition:

    Carbon C: Silicon Si:

    Manganese Mn:Sulfur S: permissible residual content

    Phosphorus p: permissible residual content

    Chromium Cr: Nickel Ni:

    Copper Cu: permissible residual content

    Molybdenum MO:SNCM439 mechanical properties:

    Tensile Strength B(MPa): 980(100)Yield Strength S(MPa): 835(85).

    Elongation δ5 (%)12

    Section shrinkage (%55

    Impact power AKV(J): 78

    Impact toughness value kv(j cm2): 98(10)hardness: 269hb

    Specimen size: The specimen blank size is 25mm

    Heat treatment specifications and metallographic structure:

    Heat treatment specification: quenched 850, oil cooled; Tempered 600, water-cooled, oil-cooled.

    Delivery Status: Delivered in heat-treated (normalized, annealed or high-temperature tempered) or without heat-treated, the delivery status should be indicated in the contract.

  2. Anonymous users2024-02-06

    SNCM439 belongs to the Japanese standard high-strength alloy structural steel, and the implementation standard: JIS G4053-2008

    The chemical composition of SNCM439 is shown in the figure below

  3. Anonymous users2024-02-05

    SNCM439 is an alloy structural steel that can be modulated.

    Alloy structural steel: SNCM439

    Executive standard: JIS G4053-2003

    Chemical Composition: Carbon C:

    Silicon si:manganese mn:

    Sulfur S: Permissible residual content

    Phosphorus p: permissible residual content

    Chromium Cr: Nickel Ni:

    Copper Cu: permissible residual content

    Molybdenum mo:

  4. Anonymous users2024-02-04

    Alloy structural steel: SNCM439

    Executive standard: JIS G4053-2003

    Chemical Composition: Carbon C:

    Silicon si:manganese mn:

    Sulfur S: Permissible residual content

    Phosphorus p: permissible residual content

    Chromium Cr: Nickel Ni:

    Copper Cu: permissible residual content

    Molybdenum MO: Mechanical Properties:

    Tensile strength b (mpa): 980

    Yield strength s (mpa): 835

    Elongation δ5 (%)12

    Section shrinkage (%55

    Impact power AKV(J): 78

    Impact toughness value kv (j cm2): 98 hardness : 269hb

    Specimen size: The specimen blank size is 25mm

    Heat treatment specification: quenched 850, oil cooled; Tempered 600, water-cooled, oil-cooled.

  5. Anonymous users2024-02-03

    It is a Japanese grade, nickel-chromium-molybdenum steel, which is close to the 40crnimo of the national standard. The specific ingredient is p s ,

  6. Anonymous users2024-02-02

    SNCM439 belongs to the Japanese standard high-strength alloy structural steel, and the implementation standard: JIS G4053-2008

    SNCM439 is a nickel-chromium-molybdenum tempered alloy structural steel. It has high strength, hardness, wear resistance and good toughness, its hardenability is slightly higher than 40cr, the critical quenching diameter in oil can reach 18 33mm, after normalizing, it has good machinability, cold drawing, rolling, tapping, forging and heat treatment. At high temperatures, the tendency to decarburize and quench deformation is small, but the tempering performance is not as good as that of 40cr steel.

    SNCM439 steel rods are generally used in tempered condition and can be used in a temperature range of -20 425.

    The chemical composition of SNCM439 is shown in the figure below

    SNCM439 Mechanical Properties:

    Tensile Strength b (MPa): 980(100)Yield Strength S (MPa): 835(85)Elongation δ5 ( 12

    Section shrinkage (%55

    Impact power AKV(J): 78

    Impact toughness value kv(j cm2): 98(10)hardness: 269hb

    Specimen size: The specimen blank size is 25mm

    SNCM439 Specification for Heat Treatment and Metallographic Structure:

    Heat treatment specification: quenched 850, oil cooled; Tempered 600, water-cooled, oil-cooled.

  7. Anonymous users2024-02-01

    SNCM439 has a hardness of 269HB in the annealed state

    SNCM439 belongs to the Japanese standard high-strength alloy structural steel, and the implementation standard: JIS G4053-2008

    SNCM439 has high strength, toughness, and excellent hardenability and overheating stability, but has high white point sensitivity and tempered brittleness. The weldability is poor, and it needs to be preheated at high temperature before welding, and the stress needs to be relieved after welding, and it is used after quenching and tempering. Tung oak is used as an important quenching and tempering parts that require good toughness, high strength and large size, such as high-load shafts for heavy machinery, turbine shafts with a diameter of more than 250mm, rotor wheel grinding shafts, turbojet engine turbine shafts, blades, beams with high-load transmission parts, and crankshaft fasteners.

    gears, etc.; It can also be used for rotor shafts and blades with an operating temperature of more than 400 °C; It can also be used to manufacture important parts with special performance requirements after nitriding treatment, and can be used as ultra-high strength steel after low-temperature tempering or isothermal quenching.

    The chemical composition of SNCM439 is shown in the figure below

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