• Difference between 316L and 316 Stainless Balls


    1. Chemical Composition

    C ≤ 0.03, Si ≤ 1.00, Mn ≤ 2.00, P ≤ 0.045, S ≤ 0.03, Ni :10.00-14.00, Cr :16.00-18.00, Mo :2.00-3.00

    C ≤ 0.08, Si ≤ 1.00, Mn ≤ 2.00, P ≤ 0.045, S ≤ 0.03, Ni :10.00-14.00, Cr :16.00-18.00, Mo :2.00-3.00

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  • Different types of Stainless steel balls


    Different types of stainless steel balls, such as AISI 440C, AISI 430, AISI 420/420C, AISI 316L/316, AISI 304/302, have different characteristics, corrosion resistanc, hardness and so on. Let's take a look together at the differences among them.

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  • Weight & Diameter of Steel Balls


    Bearing steel balls have many specifications, usually manufactured in accordance with inch dimensions. Accuracy of precision steel balls can be accurate to the thousandth units of micrometers (μm).
    The weights of different specifications of steel balls is different. Following, the specification and weight of bearing balls are translated.

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  • Chinese New Year Holiday of H.R.T


    Dear Customer,

    Arrangement of Chinese New Year Holiday of H.R.T. Precision Steel Ball is as followed.

    Holiday arrangement: From 27 Jan to 6 Feb

    Back to work: On 7 Feb

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  • Specific Gravity of Stainless Steel Ball


    What are the sizes of stainless steel balls? How to convert the number and the weight among different stainless steel balls? How to convert the Inch size into metric dimensions?——Specific Gravity of Stainless Steel Ball

    Stainless Steel Ball Proportion Sheet as below——Zhongshan H.R.T. Precision Steel Ball Factory :

    1 inch =25.4mm TEL:86-760-88262588-614 (Alice Wu)

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  • Chrome Steel Ball Proportion Sheet


    How to convert the number and the weight among different sizes of chrome steel balls? ——Chrome Steel Ball(AISIE52100/100Cr6/SUJ-2) /Bearing Ball Proportion——H.R.T. Precison Steel Ball Manufacturer   Emai:  (Alice Wu)

    The following is the Chrome Steel Ball(AISIE52100/100Cr6/SUJ-2) /Bearing Ball Proportion Sheet

    1 inch =25.4mm

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  • What is stainless steel?


    What is stainless steel?

    Stainless steels are iron alloys with a minimum of 10.5% chromium. Other alloying elements are added to enhance their structure and properties such as formability, strength and cryogenic toughness.

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  • Ball Quality


    Ball quality is defined as follows:

    Surface Hardness is measured on the Rockwell Scale. Minimum hardness is RC 60 for carbon, chrome and 440 stainless balls and varies for other products according to the material and desired toughness.
    Case Depth is the radial distance from the ball surface to the point where hardness falls to Rockwell C 50. The core is the remaining soft inner area (avalible in carbon steel ball).
    Surface Integrity is defined as the surface smoothness and freedom from defects such as flats, pits, soft spots and cuts. Balls must be free of such defects when inspected without magnification.
    Size is the mean diameter, measured between two parallel planes on the ball surface.
    Sphericity is defined as the deviation from a true spherical form (out-of-round condition).

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  • Markets of Steel Ball



    Balls for automotive applications extend from engine components to airbags and more:

    • Platinum balls or rivets for spark plugs
    • Aluminum balls in airbags
    • Stainless steel and aluminum balls in seatbelt locking mechanisms
    • Steel balls for seat slides
    • Drilled balls for engine push rods
    • Steel balls in transmission housing part

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  • Steel ball material standard Comparison


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