Wilson Rockwell Hardness Test Blocks


Wilson Rockwell hardness test blocks set the standard for the industry and are made from the highest quality material to insure the most uniform and repeatable Rockwell test blocks available. A comprehensive variety of scales and hardness test blocks are available to meet the wide ranges and hardness scales associated with Rockwell®, Brinell, Knoop and Vickers testing. All Wilson Rockwell hardness test blocks are calibrated in the Wilson Hardness Calibration Laboratory in Binghamton, NY. The Wilson lab is accredited to ISO/IEC 17025 by A2LA and the testers used in the calibration process undergo a stringent monitoring process using NIST traceable devices.

For the ultimate accuracy and performance in tester verification, calibration sets are available for most Rockwell scales.

100% inspection to ensure that every single Rockwell test block meets the physical requirements of ASTM (thickness, flatness, parallelism, surface roughness)

  • We work directly with the steel and brass mills to specify the chemical composition
  • Our machining processes (grinding, lapping, polishing) are all done in house, at the site of calibration.
  • 100% inspection to ensure that every single test block meets the physical requirements of ASTM (thickness, flatness, parallelism, surface roughness)
  • Rockwell test blocks support NADCAP compliance
  • Wilson Rockwell Hardness Test Blocks Specifications
    Block size: Ø 2.4 in x 0.35 in (Ø 60mm x 9mm)
    Block weight: ±0.66 lbs (± 0.3kg)
    Certification: According to ISO 6508-3 & ASTM E18
    The Buehler-Wilson Hardness Calibration Laboratory is accredited to ISO / IEC 17025 by A2LA

    HRA Scale
    Certified with Diamond Brale Indenter
    Part Number Hardness Value Scale Min Max Quick Ship
    9201-050 31 HRA 28 32
    9201-060 35 HRA 33 37
    9201-070 40 HRA 37 41
    9201-080 44 HRA 42 46
    9201-090 50 HRA 47 51
    9201-100 58 HRA 56 61
    9201-110 63 HRA 61 65
    9201-120 65 HRA 63 67
    9201-130 68 HRA 66 70
    9201-140 70 HRA 68 72
    9201-150 73 HRA 71 75
    9201-160 76 HRA 74 78
    9201-180 81 HRA 79 83
    9201-190 83 HRA 81 85
    9201-200 84 HRA 82 86
    9201-210 87 HRA 85 89
    HRA Scale
    Certified with Diamond Brale Indenter (for Carbide testing)
    Part Number Hardness Value Scale Min Max Quick Ship
    900990185 85 HRA 84 86
    900990187 87 HRA 86 88
    900990189 89 HRA 88 90
    90099191 91 HRA 90 91
    90099192 92 HRA 91 92
    90099193 93 HRA 92 93
    HRB Scale
    Certified with Tungsten Carbide Ball Indenter
    Part Number Hardness Value Scale Min Max Quick Ship
    9202-030W 20 HRB(W) 15 25
    9202-040W 30 HRB(W) 25 35
    9202-050W 40 HRB(W) 35 45
    9202-060W 50 HRB(W) 45 55
    9202-070W 60 HRB(W) 55 65
    9202-080W 70 HRB(W) 65 75
    9202-090W 80 HRB(W) 75 85
    9202-100W 95 HRB(W) 85 99
    HRB Scale
    Certified with Steel Ball Indenter
    Part Number Hardness Value Scale Min Max Quick Ship
    9202-060 50 HRB(S) 45 55
    9202-070 60 HRB(S) 55 65
    9202-080 70 HRB(S) 65 75
    9202-090 80 HRB(S) 75 85
    9202-100 90 HRB(S) 85 95
    HRC Scale
    Certified with Diamond Brale Indenter
    Part Number Hardness Value Scale Min Max Quick Ship
    9203-111 25 HRC 22.5 27.5
    9203-121 30 HRC 27.5 32.5
    9203-131 35 HRC 32.5 37.5
    9203-141 40 HRC 37.5 42.5
    9203-151 45 HRC 42.5 47.5
    9203-161 50 HRC 47.5 52.5
    9203-171 55 HRC 52.5 57.5
    9203-181 60 HRC 57.5 62
    9203-191 63 HRC 62.1 64.6
    9203-201 65 HRC 64.6 68
    9203-211 70 HRC 68 80
    HRE Scale
    Certified with Tungsten Carbide Ball Indenter
    Part Number Hardness Value Scale Min Max Quick Ship
    9205-010W 57 HRE 54 61
    9205-020W 63 HRE 59 65
    9205-030W 69 HRE 65 71
    9205-040W 75 HRE 72 78
    9205-050W 81 HRE 78 84
    9205-060W 87 HRE 84 90
    9205-070W 93 HRE 90 96
    9205-080W 99 HRE 96 102
    HRF Scale
    Certified with Tungsten Carbide Ball Indenter
    Part Number Hardness Value Scale Min Max Quick Ship
    9206-010W 57 HRF 54 60
    9206-020W 63 HRF 60 66
    9206-030W 69 HRF 65 71
    9206-040W 74 HRF 71 77
    9206-050W 80 HRF 76 82
    9206-060W 86 HRF 82 88
    9206-070W 91 HRF 88 94
    9206-080W 97 HRF 94 100
    HRG Scale
    Certified with Tungsten Carbide Ball Indenter
    Part Number Hardness Value Scale Min Max Quick Ship
    9207-090W 49 HRG 44 54
    9207-110W 87 HRG 82 92
    HRR Scale
    Certified with Tungsten Carbide Ball Indenter
    Part Number Hardness Value Scale Min Max Quick Ship
    9216-020W 114 HRR 104 124
    HR15N Scale
    Certified with Diamond Brale Indenter
    Part Number Hardness Value Scale Min Max Quick Ship
    9212-110 72 HR15N 70 74
    9212-120 75 HR15N 73 77
    9212-130 78 HR15N 76 80
    9212-140 80 HR15N 78 82
    9212-150 83 HR15N 81 85
    9212-160 86 HR15N 84 88
    9212-170 88 HR15N 86 90
    9212-180 90 HR15N 88 92
    9212-190 91 HR15N 89 93
    9212-200 92 HR15N 90 94
    9212-210 94 HR15N 92 96
    HR30N Scale
    Certified with Diamond Brale Indenter
    Part Number Hardness Value Scale Min Max Quick Ship
    9213-110 46 HR30N 44 48
    9213-120 50 HR30N 48 52
    9213-130 55 HR30N 53 57
    9213-140 60 HR30N 58 62
    9213-150 64 HR30N 62 66
    9213-160 69 HR30N 66 72
    9213-170 73 HR30N 71 75
    9213-180 78 HR30N 75 79
    9213-190 80 HR30N 78 82
    9213-200 82 HR30N 80 84
    9213-210 86 HR30N 84 88
    HR45N Scale
    Certified with Diamond Brale Indenter
    Part Number Hardness Value Scale Min Max Quick Ship
    9214-110 25 HR45N 22 28
    9214-120 31 HR45N 28 34
    9214-130 37 HR45N 34 40
    9214-140 43 HR45N 40 46
    9214-150 49 HR45N 46 52
    9214-160 55 HR45N 52 58
    9214-170 61 HR45N 58 64
    9214-180 67 HR45N 64 70
    9214-190 70 HR45N 68 72
    9214-200 72 HR45N 70 74
    9214-210 78 HR45N 73 78
    HR15T Scale
    Certified with Tungsten Carbide Ball Indenter
    Part Number Hardness Value Scale Min Max Quick Ship
    9218-010W 61 HR15T 53 63
    9218-020W 64 HR15T 62 66
    9218-030W 67 HR15T 65 69
    9218-040W 71 HR15T 68 72
    9218-050W 74 HR15T 71 75
    9218-060W 77 HR15T 75 79
    9218-070W 80 HR15T 78 82
    9218-080W 84 HR15T 81 85
    9218-090W 87 HR15T 84 88
    9218-100W 92 HR15T 89 93
    HR30T Scale
    Certified with Tungsten Carbide Ball Indenter
    Part Number Hardness Value Scale Min Max Quick Ship
    9219-030W 29 HR30T 25 31
    9219-040W 36 HR30T 33 39
    9219-050W 43 HR30T 40 46
    9219-060W 50 HR30T 46 52
    9219-070W 56 HR30T 53 59
    9219-080W 63 HR30T 59 65
    9219-090W 70 HR30T 67 73
    9219-100W 80 HR30T 77 83
    HR45T Scale
    Certified with Tungsten Carbide Ball Indenter
    Part Number Hardness Value Scale Min Max Quick Ship
    9220-050W 13 HR45T 1 17
    9220-060W 23 HR45T 18 28
    9220-070W 34 HR45T 28 38
    9220-080W 43 HR45T 37 47
    9220-090W 53 HR45T 48 58
    9220-100W 67 HR45T 57 77
    HR15Y Scale
    Certified with Steel Ball Indenter
    Part Number Hardness Value Scale Min Max Quick Ship
    9228-020 90 HR15Y 87 93
    9228-060 96 HR15Y 93 99
    HR15Y Scale
    Certified with Tungsten Carbide Ball Indenter
    Part Number Hardness Value Scale Min Max Quick Ship
    9228-020W 90 HR15Y 87 93
    9228-060W 96 HR15Y 93 99
    Special Order Test Blocks
    The Wilson Hardness Calibration Laboratory is capable of special orders outside the standard product offering. The following item numbers should be used for special orders including specific hardness values, hardness ranges, engraving or other compliances.

    Only available in the US and China
    Part Number Description Quick Ship
    9201-002 Special Hardness or Range Request
    9201-003 NADCAP Engraved Grid
    9201-006 API Compliant Test Block

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