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Cold Drawn Hollow Round Bar Corrosion Resistant High Precision

Categories Hollow Round Bar
Brand Name: HY
Certification: ISO9001:2008
Place of Origin: China
MOQ: 5 tons
Price: Negotiation
Payment Terms: L/C, T/T
Supply Ability: 30tons a day
Delivery Time: 30days
Packaging Details: Anti rust oil to be applied on material and each rod to be packed in paper sleeve
Product name: Hollow round bar
Raw material: Steel
Tensile strength: Not less than 610 N/MM2
Yield strength: Not less than 355 N/MM2
Surface treatment: Hard chrome plating
Chrome thickness: 20-30 micron
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    Cold Drawn Hollow Round Bar Corrosion Resistant High Precision

    Cold Drawn Hollow Round Bar Corrosion Resistant High Precision


    Detailed Product Description

    1. Material: CK45, ST52, 20MnV6, 42CrMo4, 40Cr
    2. Diameter: 6mm - 1000mm
    3. Length: 1000mm - 8000mm
    4. Advanced inspection apparatus
    5. Condition: Chrome plated, Quenched / Tempered, Induction hardened, Q / T Induction hardened


    Detailed Description
    1.CHEMICAL COMPOSITION

    Material

    C%

    Mn%

    Si%

    S%

    P%

    V%

    Cr%

    Ck45

    0.42-0.50

    0.50-0.80

    0.04

    0.035

    0.035



    ST52

    0.22

    1.6

    0.55

    0.035

    0.04



    20MnV6

    0.16-0.22

    1.30-1.70

    0.10-0.50

    0.035

    0.035

    0.10-0.20


    42CrMo4

    0.38-0.45

    0.60-0.90

    0.15-0.40

    0.03

    0.03


    0.90-1.20

    40Cr

    0.37-0.45

    0.50-0.80

    0.17-0.37




    0.80-1.10


    2.MECHANCIAL PROPERTIES

    Material

    T.S N/MM2

    Y.S N/MM2

    E%(MIN)

    CHARPY

    CONDITION

    CK45

    610

    355

    15

    >41J

    NORMALIZE

    CK45

    800

    630

    20

    >41J

    Q + T

    ST52

    500

    355

    22


    NORMALIZE

    20MnV6

    750

    590

    12

    >40J

    NORMALIZE

    42CrMo4

    980

    850

    14

    >47J

    Q + T

    40Cr

    1000

    800

    10


    Q + T


    3. SUPPLY CONDITION
    Ground and chrome plated
    4. CHROME THICKNESS
    20 to 30 micron
    5. SURFACE ROUGHNESS
    Ra≤0.2 micron and Rt≤2 micro
    6. TOLERANCES ON DIA
    ISO f7 on the diameter
    7.OVALITY
    Half of the tolerance ISO f7
    8. STRAIGHTNESS
    ≤0.2MM/M
    9. SURFACE HARDNESS
    850-1150HV (vickers 100g)
    10.COHESION
    No cracks,breaking or detaching after thermic shock(warming up at 300 celsius degrees and cooling
    in water)
    11 .POROSITY
    Test according to ISO 1456/1458 and result yaluation according to ISO 4540 rating 8-10
    12 CORROSION RESISTANCE
    Test in natural salt spray according to ASTM B 117-72hours
    Results evaluation according to ISO 4540 RATING 7-10
    13. WELDABILITY
    Good
    14. PACKING
    Anti rust oil to be applied on material and each rod to be packed in paper sleeve
    15. CERTIFICATE
    All certificate related with material heat treatment and plating is required

    We imported one continous chrome plating line from Italy at the beginning of 2016. With this new chrome plating line, we will improve efficiency and product quality a lot.



















































    Product Tags:

    round hollow bar

      

    hollow steel bar

      
    Quality Cold Drawn Hollow Round Bar Corrosion Resistant High Precision for sale
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