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 (link to Brinell page), Knoop and Vickers (link to Knoop and Vickers page) 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)
| 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 |
| 9201-030 | 22 | HRA | 20 | 24 |
| 9201-040 | 27 | HRA | 24 | 28 |
| 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 |
| 9201-170 | 78 | HRA | 76 | 80 |
| 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 |
| 900990185 | 85 | HRA | 84 | 86 |
| 900990187 | 87 | HRA | 86.01 | 88.5 |
| 900990189 | 89 | HRA | 88.51 | 90.49 |
| 900990191 | 91 | HRA | 90.5 | 91.5 |
| 900990192 | 92 | HRA | 91.51 | 92.5 |
| 900990193 | 93 | HRA | 92.51 | 93.5 |
| HRB Scale | ||||
|---|---|---|---|---|
| Certified with Tungsten Carbide Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 9202-010W | 0 | HRB(W) | -5 | 5 |
| 9202-020W | 10 | HRB(W) | 1 | 15 |
| 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 | 95 |
| HRB Scale | ||||
|---|---|---|---|---|
| Certified with Steel Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 9202-020 | 10 | HRB(S) | 1 | 15 |
| 9202-030 | 20 | HRB(S) | 15 | 25 |
| 9202-040 | 20 | HRB(S) | 25 | 35 |
| 9202-050 | 30 | HRB(S) | 35 | 45 |
| 9202-060 | 50 | HRB(S) | 45 | 55 |
| 9202-070 | 50 | HRB(S) | 55 | 65 |
| 9202-080 | 70 | HRB(S) | 65 | 75 |
| 9202-090 | 70 | HRB(S) | 75 | 85 |
| 9202-100 | 80 | HRB(S) | 85 | 95 |
| HRC Scale | ||||
|---|---|---|---|---|
| Certified with Diamond Brale Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 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 |
| HRD Scale | ||||
|---|---|---|---|---|
| Certified with Diamond Brale Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 9204-120 | 48 | HRD | 46 | 50 |
| 9204-150 | 59 | HRD | 57 | 61 |
| 9204-170 | 67 | HRD | 65 | 69 |
| 9204-180 | 71 | HRD | 69 | 73 |
| 9204-200 | 75 | HRD | 73 | 77 |
| HRE Scale | ||||
|---|---|---|---|---|
| Certified with Steel Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 9205-010 | 57 | HRE | 54 | 61 |
| 9205-020 | 63 | HRE | 59 | 65 |
| 9205-030 | 69 | HRE | 65 | 71 |
| 9205-040 | 75 | HRE | 72 | 78 |
| 9205-050 | 81 | HRE | 78 | 84 |
| 9205-060 | 87 | HRE | 84 | 90 |
| 9205-070 | 93 | HRE | 90 | 96 |
| 9205-080 | 99 | HRE | 96 | 102 |
| HRE Scale | ||||
|---|---|---|---|---|
| Certified with Tungsten Carbide Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 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 Steel Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 9206-010 | 57 | HRF | 54 | 60 |
| 9206-020 | 63 | HRF | 60 | 66 |
| 9206-030 | 69 | HRF | 65 | 71 |
| 9206-040 | 74 | HRF | 71 | 77 |
| 9206-050 | 80 | HRF | 76 | 82 |
| 9206-060 | 86 | HRF | 82 | 88 |
| 9206-070 | 91 | HRF | 88 | 94 |
| 9206-080 | 97 | HRF | 94 | 100 |
| HRF Scale | ||||
|---|---|---|---|---|
| Certified with Tungsten Carbide Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 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 |
| 9207-070W | 17 | HRG | 12 | 23 |
| 9207-080W | 32 | HRG | 27 | 37 |
| 9207-090W | 49 | HRG | 44 | 54 |
| 9207-100W | 74 | HRG | 69 | 79 |
| 9207-110W | 87 | HRG | 82 | 92 |
| HRH Scale | |||||
|---|---|---|---|---|---|
| Certified with Tungsten Carbide Ball Indenter | |||||
| Part Number | Hardness Value | Scale | Min | Max | |
| 9208-010W | 87 | HRH | 85 | 89 | |
| 9208-020W | 91 | HRH | 88 | 92 | |
| 9208-030W | 94 | HRH | 92 | 96 | |
| 9208-040W | 98 | HRH | 96 | 100 | |
| HRK Scale | ||||
|---|---|---|---|---|
| Certified with Tungsten Carbide Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 9209-030W | 38 | HRK | 33 | 43 |
| 9209-040W | 47 | HRK | 42 | 52 |
| 9209-050W | 55 | HRK | 50 | 60 |
| 9209-060W | 65 | HRK | 60 | 70 |
| 9209-070W | 73 | HRK | 68 | 78 |
| 9209-080W | 81 | HRK | 76 | 86 |
| 9209-090W | 90 | HRK | 85 | 95 |
| HRL Scale | ||||
|---|---|---|---|---|
| Certified with Tungsten Carbide Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 9210-010W | 105 | HRL | 100 | 110 |
| 9210-030W | 109 | HRL | 104 | 114 |
| 9210-050W | 113 | HRL | 108 | 118 |
| 9210-060W | 115 | HRL | 110 | 120 |
| 9210-070W | 117 | HRL | 112 | 122 |
| 9210-090W | 122 | HRL | 117 | 127 |
| 9210-100W | 125 | HRL | 120 | 130 |
| HRM Scale | ||||
|---|---|---|---|---|
| Certified with Tungsten Carbide Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 9211-010W | 86 | HRM | 81 | 91 |
| 9211-020W | 90 | HRM | 85 | 95 |
| 9211-030W | 93 | HRM | 88 | 98 |
| 9211-050W | 101 | HRM | 96 | 106 |
| 9211-060W | 105 | HRM | 100 | 110 |
| 9211-070W | 108 | HRM | 103 | 113 |
| 9211-080W | 112 | HRM | 107 | 117 |
| 9211-090W | 116 | HRM | 111 | 121 |
| 9211-100W | 122 | HRM | 117 | 127 |
| HRR Scale | ||||
|---|---|---|---|---|
| Certified with Tungsten Carbide Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 9216-020W | 114 | HRR | 104 | 124 |
| 9216-030W | 118 | HRR | 117 | 130 |
| HRS Scale | ||||
|---|---|---|---|---|
| Certified with Tungsten Carbide Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 9217-010W | 101 | HRS | 80 | 106 |
| 9217-020W | 105 | HRS | 95 | 115 |
| HR15N Scale | ||||
|---|---|---|---|---|
| Certified with Diamond Brale Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 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 |
| 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 |
| 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 Steel Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 9218-020 | 64 | HR15T | 62 | 66 |
| 9218-030 | 67 | HR15T | 65 | 69 |
| 9218-040 | 71 | HR15T | 68 | 72 |
| 9218-050 | 74 | HR15T | 71 | 75 |
| 9218-060 | 77 | HR15T | 75 | 79 |
| 9218-070 | 80 | HR15T | 78 | 82 |
| 9218-080 | 84 | HR15T | 81 | 85 |
| 9218-090 | 87 | HR15T | 84 | 88 |
| 9218-100 | 92 | HR15T | 89 | 93 |
| HR15T Scale | ||||
|---|---|---|---|---|
| Certified with Tungsten Carbide Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 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 |
| 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 |
| HR30T Scale | ||||
|---|---|---|---|---|
| Certified with Steel Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 9219-030 | 29 | HR30T | 25 | 31 |
| 9219-040 | 36 | HR30T | 33 | 39 |
| 9219-050 | 43 | HR30T | 40 | 46 |
| 9219-060 | 50 | HR30T | 46 | 52 |
| 9219-070 | 56 | HR30T | 53 | 59 |
| 9219-080 | 63 | HR30T | 59 | 65 |
| 9219-090 | 70 | HR30T | 67 | 73 |
| 9219-100 | 80 | HR30T | 77 | 83 |
| HR45T Scale | ||||
|---|---|---|---|---|
| Certified with Tungsten Carbide Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 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 | 67 |
| HR45T Scale | ||||
|---|---|---|---|---|
| Certified with Steel Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 9220-060 | 23 | HR45T | 18 | 28 |
| 9220-070 | 34 | HR45T | 28 | 38 |
| 9220-080 | 43 | HR45T | 37 | 47 |
| 9220-090 | 53 | HR45T | 48 | 58 |
| 9220-100 | 67 | HR45T | 57 | 67 |
| HR15W Scale | ||||
|---|---|---|---|---|
| Certified with Tungsten Carbide Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 9222-010W | 76 | HR15W | 74 | 78 |
| 9222-050W | 84 | HR15W | 82 | 86 |
| 9222-090W | 93 | HR15W | 90.5 | 94.5 |
| 9222-100W | 95 | HR15W | 93 | 97 |
| HR15Y Scale | ||||
|---|---|---|---|---|
| Certified with Steel Ball Indenter | ||||
| Part Number | Hardness Value | Scale | Min | Max |
| 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 |
| 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. | |
| Part Number | Description |
| 9201-002 | Special Hardness or Range Request |
| 9201-003 | NADCAP Engraved Grid |
| 9201-006 | API Compliant Test Block |
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