Stellite 21 Chrome Steel Balls Valve Seats

  • Brand: EB
  • Material Grade: Stellite 21






    Description

    ZAlCu10 High precision Alu Cast Parts EB9090

    Stellite 21 Chrome Steel Balls Valve Seats

    • We produce high temperature Superalloy Cobalt Valve Seats and Valve Balls with high precision.
    • Cobalt alloy valve balls and seats are produced with cast and metallurgic powder process.
    • Stellite21 high wear Co balls and seats are used for oil and gas industries.

    Stellite 21 Chrome Steel Balls Valve Seats is made from is a hard alloy ,that can withstand various types of abrasion ,

    and corrosion as well as high temperature oxidation.The cobalt-base alloy was invented by American Elwood Hayness in 1907.

    The Stellite alloy has major component of cobalt, containing a considerable amount of nickel, chromium,

    tungsten and a small amount of molybdenum, niobium, tantalum, titanium, lanthanum, etc..Occasionally it contains an alloy of iron.

    According to the composition of the alloy, they can be made into wire, powder for hard surface surfacing, thermal spraying, spray welding,

    etc.. It also can be made into cast forging parts and powder metallurgy parts.

    Chemical compositions and properties (%)
    Brand C Si Cr Ni Mo W Co Fe P S Density

    (g/cm3)

    Hardness

    (HRC)

    TOPS

    21

    2.2-3.0 ≤2.0 30-34 ≤3.0 ≤1.0 14-18 Bal. ≤3.0 ≤0.05 ≤0.05 8.65 53-59
    Stellite 21 Chrome Steel Balls Valve Seats Application and Advantage:

    1. Valve balls and valve seats  are widely used  in pipeline valve.

    2.Valve Ball and Seat performance directly affects the use effect and service life of the pipeline valve.

    3.Each ball-and-seat combination is vacuum tested to ensure a perfect seal is obtained in all positions of contact.

    Our Photos for Stellite 21 Chrome Steel Balls Valve Seats:

    Stellite 21 Chrome Steel Balls Valve Seats

    Standard for Stellite 21 Chrome Steel Balls Valve Seats:
    Valve Seats Co Cr C W Mo Ni Si B Fe Mn Others
    STELLITE 1 BAL 33 2.45 13 2.5* 1 2.5* 1
    STELLITE 3 BAL 31 2.5 13 2.5* 1 2.5* 1
    STELLITE 4 BAL 31.5 1 14 2.0* 1 2.0* 1
    STELLITE 6 BAL 28 1.2 5 3.0* 1 2.5* 1
    STELLITE 12 BAL 29 1.85 9 2.5* 1 2.5* 1
    STELLITE 20 BAL 33 2.45 17.5 2.5* 1 2.5* 1
    STELLITE 21 BAL 27 0.25 5.5 2.5* 1 3.0* 1
    STELLITE 31 BAL 26 0.5 7.5 10.5 1 2.0* 1
    STELLITE 190 BAL 26 3.3 14 1.0 1 8.0 0.5
    STELLITE 238 BAL 26 0.1 3 1 20.0 1
    STELLITE 306 BAL 25 0.4 2 6.0 1 4.0* 1 Nb=5
    STELLITE 694 BAL 28 1 19 5.0 1 2.5* 1 V=1
    STELLITE F BAL 25.5 1.75 12.25 22.5 1 1.5*
    STELLITE SF1 BAL 19 1.3 13 13 3 2.5 3* 0.5 Cu=0.5
    STELLITE SF6 BAL 19 0.7 7 13 2.5 1.7 3* 0.5 Cu=0.5
    STELLITE SF12 BAL 19 1 9 13 3 2 3* 0.5 Cu=0.5
    STELLITE SF20 BAL 19 1.5 15 13 3 3 2* 0.5 Cu=0.5
    TRIBALOY T400 BAL 8 0.1* 28 3* 2.4 3*
    TRIBALOY T800 BAL 17 0.1* 28 3* 3.2 3*
    DELORO 15 0.06* BAL 2.0 1.05 1.5* 20 Cu=20
    DELORO 22 0.70 0.10 BAL 2.3 1.75
    DELORO 40 7.0 0.10 BAL 3.5 2.25
    DELORO 50 10.25 0.45 BAL 4.0 1.85 4.0
    DELORO 60 14.25 0.6 BAL 2.0 3.5 4.0
    DELORO 625 22 0.1 9 BAL 5
    NISTELLE C 16.5 0.12* 4.5 17 BAL 0.7 6.0
    TRIBALOY T700 15 0.10* 32 BAL 3.25
    Our Experience 
    • 13 Year Experience in Heat-resistant Steel Field
    • 18 Year Expertise in Wear-resistant Material Field
    • 20 Year Customer-made High Quality Castings & Forgings
    Trading Terms:
    1. The nearest seaport: Shanghai port
    2. The nearest airport: Shanghai Pudong airport
    3. Payment Terms:L/C,TT,West Union,Paypal
    4. Payment Condition:50% before production, 50% before delivery against complete set of inspection report
    5. Supply Capability:  10,000 tons per year
    6. Sample Availability: yes
    7. Sample Time:15-30 Days
    8. Packing: Plywood Cases or Steel Crates
    9. Delivery time: 45 working days per 20 tons regular castings & forgings
    10. Service: OEM, ODM or Customized

    ZAlCu10 High precision Alu Cast Parts EB9090

    1. 20-year Foundry Operation Experience.
    2. Friendly & High Efficient Technical & Commercial Communication.
    3. Professional Export Practices: Exported to +60 Overseas Countries.

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