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Machinery Gear Parts Ductile Cast Iron Casting ASTM A536 Material Sand Castings Foundry

    Buy cheap Machinery Gear Parts Ductile Cast Iron Casting ASTM A536 Material Sand Castings Foundry from wholesalers
     
    Buy cheap Machinery Gear Parts Ductile Cast Iron Casting ASTM A536 Material Sand Castings Foundry from wholesalers
    • Buy cheap Machinery Gear Parts Ductile Cast Iron Casting ASTM A536 Material Sand Castings Foundry from wholesalers
    • Buy cheap Machinery Gear Parts Ductile Cast Iron Casting ASTM A536 Material Sand Castings Foundry from wholesalers

    Machinery Gear Parts Ductile Cast Iron Casting ASTM A536 Material Sand Castings Foundry

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    Brand Name : non-standard
    Model Number : custom-built
    Certification : ISO9001;TS16949
    Price : quote according to different drawing technique requirements
    Payment Terms : T/T, L/C
    Supply Ability : 300 Tons every month
    Delivery Time : within 60 days
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    Machinery Gear Parts Ductile Cast Iron Casting ASTM A536 Material Sand Castings Foundry

    Product Description and Process

    1. Machinery Gear Parts Ductile Cast Iron Casting ASTM A536 Material Sand Castings Foundry

    2. Production process: green sand molding, pre-coated sand molding and resin sand molding which can produce iron castings from 50 gram to 2000 kilograms

    3. Machining process: CNC machine, machining center, lathe, mill machine, drill machine, etc.

    4. Surface treatment process: paint coating, electrophoretic coating, electrogalvanizing coating, black oxide coating, phosphate coating, powder coating, etc.

    Product Material and Uses


    1. Normally produce with gray iron HT200, HT250, ductile iron 65-45-12, 60-40-18, 80-55-06, 80-60-03, etc.
    2. The ductile iron casting products are widely used for Auto-cars, trains, trucks, vehicle components, mining machinery components, agricultural machinery parts, textile machinery parts, construction machinery parts, valves and pump parts, etc.

    Ductile Iron Castings & Ductile Cast Iron

    If cast iron is subject to a compressive load, these stress points are not particularly detrimental and flake graphite cast iron is excellent under compression. However, tensile loading above the natural tensile strength of the cast iron can cause rapid tensile failure as cracks propagate rapidly out from these stress points. The result of this is that cast iron has virtually no elongation, is a brittle material and is therefore limited in its use in tensile and shock loading applications. For years foundrymen and metallurgists tried to develop a new type of cast iron that would withstand bending and shock loading and would have the characteristics more of malleable cast iron but could be produced at the lower cost of grey cast iron. This resulted in the development of Ductile Cast Iron.



    What is the difference between Ductile Iron and Cast Iron?


    Cast iron refers to all iron parts that are cast and have a high carbon content, but in normal usage, “cast iron” refers to gray iron, the cast parts with weaker iron structures containing graphite flakes. Ductile iron must specifically have the spherical graphite structure in the metal.
    Regular cast iron can be cast cheaply, machined very easily, and strength can be added through heat treating. Gray iron lacks the strength and durability of ductile cast iron. Ductile iron castings are not much more expensive than gray iron castings yet if there is no need for the benefits of ductile iron you should probably stick with the gray iron castings.

    What is in Ductile Iron? (Composition)

    If you were to do a chemical analysis of ductile iron, this is what you would normally find:
    Iron ~94%
    Carbon 3.2 – 3.60%
    Silicon 2.2 – 2.8%
    Manganese 0.1 – 0.2%
    Magnesium 0.03 – 0.04%
    Phosphorus 0.005 – 0.04%
    Sulfur 0.005 – 0.02%
    Copper <= 0.40%
    To improve the strength of ductile iron, additional tin or copper can be added. To improve corrosion resistance, copper, nickel, or chromium can replace anywhere from 15-30% of the iron.

    Ductile Iron Grade Chart
    ASTM A536 1993 (USA)

    GradeTensile Strength
    σ≥/Mpa
    Yield Strength
    σ≥/Mpa
    Elongation
    δ≥(%)
    ANSI/ASTMUNS
    60-40-18F3280041427618
    65-45-12F3310044831012
    80-55-06F338005523796.0
    100-70-03F348006894833.0
    120-90-02F362008276212.0
    Special Purpose
    60-42-1041529010
    70-50-054853455.0
    80-60-035554153.0


    GB/T 1348 1998 (China)


    Grade

    Tensile strength

    σb≥/MPa

    Yield strength

    σ0.2≥/MPa

    Elongation

    δ5≥(%)

    Hardness

    HBS

    QT400-18

    QT400-18-LT*

    40025018130~180
    QT400-1540025015130~180
    QT450-1045031010160~210
    QT500-75003207170~230
    QT600-36003703190~270
    QT700-27004202225~305
    QT800-28004802245~335
    QT900-29006002280~360

    Low temperature V notch impact tested (-20±2℃)


    Common Ductile Iron Grades

    While there are many different ductile iron specifications, foundries routinely offer 3 common grades;

    Physical and Mechanical PropertiesASTM A536, Grade 60-40-18ASTM A536, Grade 65-45-12ASTM A536, Grade 80-55-06
    Tensile Strength, min, psi60,00065,00080,000
    Tensile Strength, min, MPa414448552
    Yield Strength, min, psi40,00045,00055,000
    Yield Strength, min, MPa276310379
    Elongation in 2 in. or 50 mm, min %18126
    Density lb/in30.2560.2560.256
    Density g/cm37.17.17.1
    Melting Temperature (Degrees F)2,100 – 2,1902,100 – 2,1902,100 – 2,190
    Melting Temperature (Degrees C)1,150 - 1,2001,150 - 1,2001,150 - 1,200
    Compressive Strength Ksi429429429
    Compressive Strength MPa296029602960
    UNSF32800F33100F33800

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