Brinell hardness


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Related to Brinell hardness: Rockwell hardness, Vickers Hardness

Bri·nell hardness

 (brĭ-nĕl′)
n.
The relative hardness of metals and alloys, determined by forcing a steel ball into a test piece under standard conditions and measuring the surface area of the resulting indentation.

[After Johan August Brinell (1849-1925), Swedish engineer.]
References in periodicals archive ?
For the same maximum and minimum thermal modulus, the model determines if it is feasible to achieve the target microstructure and, if it is, defines their optimal isothermal transformation temperatures, based on the required mechanical properties in terms of ultimate tensile strength and Brinell hardness.
Brinell hardness is closely related to the tensile strength of steel by the relationship:
Unlike the Brinell hardness test, which is mainly concerned with the average pressure under the indenter and maximum contact radius a, Rockwell hardness is determined by the indentation load, relative depth, and indenter geometry.
The workpieces are low-carbon steel forgings, 150 to 160 Brinell hardness.
What's more, Brinell hardness of an NVD nickel shell is 195, versus 167 for the QC-7 aluminum commonly used in blow molds.
Porcerax II, which has 20% to 30% porosity by volume, will give false or misleading readings if it is hardness-tested with either a Rockwell or Brinell hardness tester.
It should be heat treated as per following Standards ( a ) Forging Temp in Deg C : 1050 850 ( b ) Annealing Temp in Deg C : 750 770 ( c ) Hardening Temp in Deg C : 780 - 820 ( d ) Quenching Medium : Oil ( e ) Tempering Temp in Deg C : 180 - 250 ( f ) Working Hardness Rockwell C : 60 - 62 ( g ) Brinell Hardness Annealed : Tensile Strength in Annealed 65 - 76 Test Certificate Material Test Certificate from Govt.
Occasionally, buyers will ask for a specific Brinell hardness in the casting.
The advanced HR-500 Series Rockwell hardness testing machines offer multiple test force generation for Rockwell, Rockwell Superficial and optional Brinell hardness testing.
The advanced image analysis software automatically measures the diameter of the indentation and calculates the Brinell hardness value according to ASTM E10.