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Brand Name : | GC |
Certification : | ISO |
Delivery Time : | In stock |
Payment Terms : | TT |
Supply Ability : | 100psc/Month |
Price : | Negotiated |
Model Number : | GC-HQY-96 |
A. Features:
2. Ball indentation hardness means that a steel ball with a
specified diameter is vertically pressed into the surface of the
sample under the action of the test load and kept for a certain
period. Finally, the average pressure per unit area is expressed in
Kgf/mm2 or N/mm2.
Its expression is: H=0.21p/0.25πD (h-0.04) (kg/mm2)
P-load (kg)
h-indentation depth (mm)
D-Steel ball diameter (mm)
π - pi
Note: h=h1-h2
h1: Indentation depth of sample load (mm);
h2: The frame deformation of the instrument under the test load
(mm)
3. The distance between the center of the measurement point and the
edge of the sample is not less than 10mm, and the distance between
the centers of two adjacent measurement points is not less than
10mm
C. Main purpose and function:
Plastic hardness refers to the ability of a plastic material to
resist being pressed into it by another rigid object that is
regarded as not elastically and plastically deformed. The plastic
ball indentation hardness test is to use a steel ball with a
specified diameter to press vertically into the surface of the
sample under the action of the test load, and read the indentation
depth after a certain period. Get its hardness value by calculation
or look-up table.
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