Rockwell Hardness Standard Test Blocks

Rockwell Hardness Standard Test Blocks certified.  Free NIST traceable long form certificate with every Rockwell test block

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Rockwell Hardness Standard Test Blocks

  • Rockwell Type Hardness Standards For determining the accuracy of your hardness tester.

Typical Application of Rockwell Hardness Testing Scales

HRA – Cemented carbides, thin steel and shallow case hardened steel
HRB – Copper alloys, soft steels, aluminum alloys, malleable irons, etc.
HRC – Steel, hard cast irons, case hardened steel and other materials harder than 100 HRB
HRD – Thin steel and medium case hardened steel and pearlitic malleable iron
HRE – Cast iron, aluminum and magnesium alloys, bearing metals
HRF – Annealed copper alloys, thin soft sheet metals
HRG – Phosphor bronze, beryllium copper, malleable irons HRH . . . . Aluminum, zinc, lead
HRK – Phosphor bronze, beryllium copper, malleable irons HRH . . . . Aluminum, zinc, lead
HRL – Phosphor bronze, beryllium copper, malleable irons HRH . . . . Aluminum, zinc, lead
HRM – Soft bearing metals, plastics and other very soft materials
HRP – Soft bearing metals, plastics and other very soft materials
HRR – Soft bearing metals, plastics and other very soft materials
HRS – Soft bearing metals, plastics and other very soft materials
HRV – Soft bearing metals, plastics and other very soft materials

Rockwell Test Blocks:

  • ‘A’ Scale Test Blocks
  • ‘B’ Scale Test Blocks
  • ‘C’ Scale Test Blocks
  • ‘D’ Scale Test Blocks
  • ‘E’ Scale Test Blocks
  • ‘F’ Scale Test Blocks
  • ‘G’ Scale Test Blocks
  • ‘H’ Scale Test Blocks
  • ‘K’ Scale Test Blocks

 

Part #           Description                          Range

A Scale Hardness Standards:RA 28.5 A Scale Rockwell Test Block – 28.5 Range
HRA 33 A Scale Rockwell Test Block – 33 Range
HRA 37.5 A Scale Rockwell Test Block – 37.5 Range
HRA 41.5 A Scale Rockwell Test Block – 41.5 Range
HRA 46.5 A Scale Rockwell Test Block – 46.5 Range
HRA 52.5 A Scale Rockwell Test Block – 52.5 Range
HRA 55.5 A Scale Rockwell Test Block – 55.5 Range
HRA 63 A Scale Rockwell Test Block – 63 Range
HRA 68 A Scale Rockwell Test Block – 68 Range
HRA 73 A Scale Rockwell Test Block – 73 Range
HRA 78.5 A Scale Rockwell Test Block – 78.5 Range
HRA 83 A Scale Rockwell Test Block – 80 Range

B Scale Hardness Standards:
HRBW 0 B Scale Rockwell Test Block – 0 Range
HRBW 10 B Scale Rockwell Test Block – 10 Range
HRBW 25 B Scale Rockwell Test Block – 25 Range
HRBW 35 B Scale Rockwell Test Block – 35 Range
HRBW 45 B Scale Rockwell Test Block – 45 Range
HRBW 55 B Scale Rockwell Test Block – 55 Range
HRBW 65 B Scale Rockwell Test Block – 65 Range
HRBW 75 B Scale Rockwell Test Block – 75 Range
HRBW 85 B Scale Rockwell Test Block – 85 Range
HRBW 95 B Scale Rockwell Test Block – 95 Range

C Scale Hardness Standards:
HRC 25 C Scale Rockwell Test Block – 25 Range
HRC 35 C Scale Rockwell Test Block – 35 Range
HRC 45 C Scale Rockwell Test Block – 45 Range
HRC 55 C Scale Rockwell Test Block – 55 Range
HRC 60 C Scale Rockwell Test Block – 60 Range
HRC 63 C Scale Rockwell Test Block – 63 Range

D Scale Hardness Standards:
HRD 44 D Scale Rockwell Test Block – 44 Range
HRD 51.5 D Scale Rockwell Test Block – 51.5 Range
HRD 59 D Scale Rockwell Test Block – 59 Range
HRD 67 D Scale Rockwell Test Block – 67 Range
HRD 73 D Scale Rockwell Test Block – 73 Range

E Scale Hardness Standards:
HRE 57 E Scale Rockwell Test Block – 57 Range
HRE 62.5 E Scale Rockwell Test Block 62.5 Range
HRE 68.5 E Scale Rockwell Test Block 68.5 Range
HRE 75 E Scale Rockwell Test Block – 75 Range
HRE 78 E Scale Rockwell Test Block – 78 Range
HRE 84 E Scale Rockwell Test Block – 84 Range
HRE 90 E Scale Rockwell Test Block – 90 Range
HRE 96 E Scale Rockwell Test Block – 96 Range

F Scale Hardness Standards:
HRF 57 F Scale Rockwell Test Block – 57 Range
HRF 63 F Scale Rockwell Test Block – 63 Range
HRF 68.5 F Scale Rockwell Test Block – 68.5 Range
HRF 74 F Scale Rockwell Test Block – 74 Range
HRF 77 F Scale Rockwell Test Block – 77 Range
HRF 82.5 F Scale Rockwell Test Block – 82.5 Range
HRF 88 F Scale Rockwell Test Block – 88 Range
HRF 94 F Scale Rockwell Test Block – 94 Range
HRF 99.5 F Scale Rockwell Test Block – 99.5 Range

G Scale Hardness Standards:
HRG 10 G Scale Rockwell Test Block – 10 Range
HRG 25 G Scale Rockwell Test Block – 25 Range
HRG 41 G Scale Rockwell Test Block – 41 Range
HRG 57.5 G Scale Rockwell Test Block – 57.5 Range
HRG 66 G Scale Rockwell Test Block – 66 Range

H Scale Hardness Standards:
HRH 87 H Scale Rockwell Test Block – 87 Range
HRH 90.5 H Scale Rockwell Test Block – 90.5 Range
HRH 94 H Scale Rockwell Test Block – 94 Range
HRH 99.5 H Scale Rockwell Test Block – 99.5 Range

K Scale Hardness Standards:
HRK 21 K Scale Rockwell Test Block – 21 Range
HRK 30 K Scale Rockwell Test Block – 30 Range
HRK 38 K Scale Rockwell Test Block – 38 Range
HRK 47 K Scale Rockwell Test Block – 47 Range
HRK 51.5 K Scale Rockwell Test Block – 51.5 Range
HRK 60 K Scale Rockwell Test Block – 60 Range
HRK 68.5 K Scale Rockwell Test Block – 68.5 Range
HRK 77.5 K Scale Rockwell Test Block – 77.5 Range
HRK 86 K Scale Rockwell Test Block – 86 Range
HRK 94.5 K Scale Rockwell Test Block – 94.5 Range
HRK 98.5 K Scale Rockwell Test Block – 98.5 Range

 

 


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