Hardness conversion scale

Hardness conversion scale1
    Hardness formula
Stifler(HS)=Hardness(BHN)/10+12
2.Punctuation Hardness(HS)=Lou hardness(HRC)+15
3.Hardness(BHN)= Lock hardness(HV)
4.Lou hardness(HRC)= Hardness(BHN)/10-3
    Hardness range
HS<100
HB<500
HRC<70
HV<1300
(80~88)HRA, (85~95)HRB, (20~70)HRC
  Low & hardHRA、HRB、HRCWaitingA、B、CIt's three different standards, called the ruler.ARulersBRulersC。
  The L.L. hardness test is one of several common pressure hardness tests used today, with initial pressure on all three rulers.98.07N(CUT10kgf)Based on the depth of the pressure marks
Calculates the hardness value. RulersAIt's a cone-created head, then presses to the top.588.4N(CUT60kgf);speciesBUse the diameter as1.588mm(1/16Inches)The steel.
The ball is used as a head and then presses to the980.7N(CUT100kgf);and rulersCUse and RulersAThe same cone is used as a pressure, but the force that's put on is1471N(CUT
150kgf). So the rulerBRelatively soft material, and rulersCHarder materials apply.
  The hardness values are proven to be similar to the strength values between the various hardness values of the metal material. Since the hardness values are determined by the initial plastic deformation resistance and the continued plastic deformation resistance, the stronger the material, the higher the plastic deformation resistance, the higher the hardness value. However, the conversion relationships of the various materials are not consistent. The hardness table in the column of the station ' s Hardness Control Table gives tables for the conversion of different hardness values of steel.
Hardness is the ability of the material to resist the pressure of a hard object on its surface. It is one of the key energy indicators of the metal material. The higher the normal hardness, the more resistant it is.
Indicators are BL, LL and WL.
   Bulder Hardness(HB)
  With a certain load(General3000kg)Put a certain size(The diameter is usually10mm)The hard steel ball is pressured on the material surface for a period of time, and the weight is the weight of the area of the pressure mark, i.e. the hardness of the Bodex, after being carried.(HB)In kg./mm2 (N/mm2)。
   R.L. hardness(HR)
  When?HB>450Or the specimen is too late to use the Brewster hardness test to measure it with a hard L.A.120°the diamond cone or diameter is1.59、3.18mm The steel ball, which is pressured into the surface of the material being measured at a certain payload, is the hardness of the material from the depth of the pressure.
HRA: Yes60kgLoad and hardness of diamond cone pressors for very hard materials(Like hard-weight alloys, etc.)。
HRB: Yes100kgLoad and diameter1.58mmA hard steel ball, a hardness to get, for less hard material.(Like repulsive steel, cast iron, etc.)。
HRC: Yes150kgLoad and hardness of diamond cone pressurers for high hard materials(Like a firework steel.)。
    Wys hardness(HV)
  Here.120kgBased on the inner load and the top angles136°The diamond-cube penetrating compressor presses the material surface, dividing the surface area of the material-pressed puddle by the load value, which is the hardness of the Vivid.HVValue(kgf/mm2)。
  『HK=139.54·P/L2. In the form:HK- Noupor Hard,Mpa；P- Heavy.kg；L- The length of the puddle to the corner,mmWe use the wilder hardness in our country and in Europe, and the United States the nuptial hardness in the United States.MPa) is a statutory unit of measurement of microhardness, andkg/mm2is the hard-degree unit that was used previously.
Form1kg/mm2=9.80665Mpa. The slight hardness of the commonly used grinding is shown in the table below.

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Hardness conversion scale3

Hardness conversion scale4

   
 
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     Continuation5