Sensor Loading Control Digital Brinell Hardness Testing Machine
with Max Height 220mm
iqualitrol iBrin-411D Digital Brinell hardness tester is a unified
product combining the precise mechanical structure and the load
cell control system.
The instrument adopts the motorized test force application without
weights, and uses 0.5‰ accuracy compression sensor to feedback and
the CPU control system to automatically compensate the test force
lost during the test.
With external digital measuring microscope, no need for checking
the table or inputting the diagonal of the indentation, it can
directly show the hardness value, test force, dwell time and
As long as press the eyepiece button after measuring the
indentation length, it can automatically get the hardness value and
shows on the screen, with precise reading and easy operation.
Suitable for cast iron, steel products, nonferrous metals and soft
alloys etc. Also suitable for some nonmetal materials such as rigid
plastics and bakelite etc.
|Test Force||kgf||62.5kgf, 100kgf, 125kgf, 187.5kgf, 250kgf, 500kgf, 750kgf, 1000kgf,
|N||612.9N, 980.7N, 1226N, 1839N, 2452N, 4903N, 7355N, 9807N, 14710N,
|Hardness Reading||LCD Display|
|Microscope||20X Digital Measuring Microscope|
|Power Supply||AC220V/50Hz/1Ph, AC110V/60Hz/1Ph|
|Execute Standard||ISO 6506, ASTM E10-12, JIS Z2243, GB/T 231.2|
|Dimension||545×235×755mm, Packing Dimension: 650×435×1025mm|
|Weight||Net Weight: 130kg, Gross Weight: 160kg|
|Instrument Main Body||1 set||20X Digital Measuring Microscope||1 pc|
|Ф2.5mm, Ф5mm, Ф10mm Ball Indenter||each 1 pc||Large Plane Test Table||1 pc|
|Small Plane Test Table||1 pc||V-shaped Test Table||1 pc|
|Hardness Block 150~250 HBW 10/3000||1 pc||Hardness Block 150~250 HBW 5/750||1 pc|
|Fuse 2A||2 pcs||Power Cable||1 pc|
|Anti-dust Cover||1 pc||Usage Instruction Manual||1 copy|
Principle of Brinell Test
The Brinell hardness test method consists of indenting the test
material with a 10 mm diameter hardened carbide ball subjected to a
load of 3000 kg. For softer materials the load can be reduced to
1500 kg or 500 kg to avoid excessive indentation.
The full load is normally applied for 10 to 15 seconds in the case
of iron and steel and for at least 30 seconds in the case of other
metals. The diameter of the indentation left in the test material
is measured with a low powered microscope. The Brinell harness
number is calculated by dividing the load applied by the surface
area of the indentation.
The diameter of the impression is the average of two readings at
right angles and the use of a Brinell hardness number table can
simplify the determination of the Brinell hardness. A well
structured Brinell hardness number reveals the test conditions, and
looks like this, "75 HB 10/500/30" which means that a Brinell
Hardness of 75 was obtained using a 10mm diameter hardened steel
with a 500 kilogram load applied for a period of 30 seconds.
On tests of extremely hard metals a tungsten carbide ball is
substituted for the steel ball. Compared to the other hardness test
methods, the Brinell ball makes the deepest and widest indentation,
so the test averages the hardness over a wider amount of material,
which will more accurately account for multiple grain structures
and any irregularities in the uniformity of the material. This
method is the best for achieving the bulk or macro-hardness of a
material, particularly those materials with heterogeneous