Brinell hardness test reference block

for micro Vickers hardness testsfor Rockwell hardness test

Overview
ATI supplies certified hardness test blocks for verification and calibration of hardness testers according to major ISO and ASTM standards. Available for Rockwell, Brinell, Vickers, Micro Vickers and Knoop scales. Each block is certified through an ISO/IEC 17025 accredited laboratory (ANAB accreditation No. AC-3026.01) with ILAC-MRA recognition, ensuring traceability and international acceptance.

Applications

• Routine verification and calibration of hardness testers
• Machine checks after maintenance or relocation
• Traceable quality control for laboratories, manufacturers, heat treatment, aerospace, automotive and medical device industries

Available Types

• Rockwell Test Blocks – including HRA, HRB, HRC and superficial Rockwell scales
• Brinell Test Blocks – including HBW 10/3000, HBW 5/750, HBW 2.5/62.5 and others
• Vickers and Microhardness Blocks – from macro loads down to microhardness ranges
• Knoop Blocks – for microhardness verification where required

Why choose ATI test blocks

• ISO/IEC 17025 accredited certification
• ILAC-MRA recognized traceability
• Wide availability of scales and hardness ranges
• Fast worldwide supply and technical support

Rockwell and Superficial Rockwell - Table
Hardness Scale | Hardness Range | Size mm with mirror surface | Weight
HRA | 20 < HRA < 40 | Ø 60X10 mm | 0,2 kg
HRA | 45 < HRA < 75 | Ø 60X10 mm | 0,2 kg
HRA | 80 < HRA < 84 | Ø 60X10 mm | 0,2 kg
HRB | 20 < HRB < 50 | 50X50 mm (square) | 0,2 kg
HRB | 60 < HRB < 70 | 60X40 mm | 0,2 kg
HRB | 88 < HRB < 100 | 60X40 mm | 0,2 kg
HRC | 20 < HRC < 30 | Ø 60X10 mm | 0,2 kg
HRC | 35 < HRC < 55 | Ø 60X10 mm | 0,2 kg
HRC | 60 < HRC < 70 | Ø 60X10 mm | 0,2 kg
HRD* | 40 < HRD < 47 | Ø 60X10 mm | 0,2 kg
HRD* | 55 < HRD < 63 | Ø 60X10 mm | 0,2 kg
HRD* | 70 < HRD < 75 | Ø 60X10 mm | 0,2 kg
HRE | 95 < HRE < 100 | Ø 60X10 mm | 0,2 kg
HRE | 107 < HRE < 114 | Ø 60X10 mm | 0,2 kg
HRF | 105 < HRF < 114 | Ø 60X10 mm | 0,2 kg
HR15N | 70 < HR15N < 77 | Ø 60X10 mm | 0,2 kg
HR15N | 78 < HR15N < 88 | Ø 60X10 mm | 0,2 kg
HR15N | 89 < HR15N < 91 | Ø 60X10 mm | 0,2 kg
HR30N | 42 < HR30N < 54 | Ø 60X10 mm | 0,2 kg
HR30N | 55 < HR30N < 73 | Ø 60X10 mm | 0,2 kg
HR30N | 74 < HR30N < 80 | Ø 60X10 mm | 0,2 kg
HR45N | 20 < HR45N < 31 | Ø 60X10 mm | 0,2 kg
HR45N | 32 < HR45N < 61 | Ø 60X10 mm | 0,2 kg
HR45N | 62 < HR45N < 70 | Ø 60X10 mm | 0,2 kg
HR15T | 77 < HR15T < 80 | Ø 60X10 mm | 0,2 kg
HR15T | 80 < HR15T < 83 | Ø 60X10 mm | 0,2 kg
HR15T | 88 < HR15T < 93 | Ø 60X10 mm | 0,2 kg
HR30T | 49 < HR30T < 56 | Ø 60X10 mm | 0,2 kg
HR30T | 57 < HR30T < 63 | Ø 60X10 mm | 0,2 kg
HR30T | 73 < HR30T < 82 | Ø 60X10 mm | 0,2 kg
HR45T | 23 < HR45T < 33 | Ø 60X10 mm | 0,2 kg
HR45T | 34 < HR45T < 43 | Ø 60X10 mm | 0,2 kg
HR45T | 58 < HR45T < 72 | Ø 60X10 mm | 0,2 kg
**Notes:** The HRB (20 < HRB < 50) master test block has a square shape. These master hardness test blocks are subject to availability.

Brinell - Table
Hardness Scale | Hardness Range | Size mm with mirror surface | Weight
HBW 10/3000 | 150 < HBW < 225 | Ø 90X17 mm | 0,8 kg
HBW 10/3000 | 225 < HBW < 350 | Ø 90X17 mm | 0,8 kg
HBW 10/3000 | 350 < HBW < 650 | Ø 90X17 mm | 0,8 kg
HBW 10/1500* | 150 < HBW < 225 | Ø 90X17 mm | 0,8 kg
HBW 10/1500* | 225 < HBW < 350 | Ø 90X17 mm | 0,8 kg
HBW 10/1500* | 350 < HBW < 650 | Ø 90X17 mm | 0,8 kg
HBW 10/1000 | 75 < HBW < 150 | Ø 90X17 mm | 0,8 kg
HBW 10/1000 | 150 < HBW < 300 | Ø 90X17 mm | 0,8 kg
HBW 10/1000 | 300 < HBW < 450 | Ø 90X17 mm | 0,8 kg
HBW 10/500 | 75 < HBW < 150 | Ø 90X17 mm | 0,8 kg
HBW 10/500 | 150 < HBW < 300 | Ø 90X17 mm | 0,8 kg
HBW 10/500 | 300 < HBW < 450 | Ø 90X17 mm | 0,8 kg
HBW 10/250* | 75 < HBW < 150 | Ø 60X10 mm | 0,2 kg
HBW 10/250* | 150 < HBW < 300 | Ø 60X10 mm | 0,2 kg
HBW 10/250* | 300 < HBW < 450 | Ø 60X10 mm | 0,2 kg
HBW 10/100* | 75 < HBW < 125 | Ø 60X10 mm | 0,2 kg
HBW 5/750 | 100 < HBW < 225 | Ø 90X17 mm | 0,8 kg
HBW 5/750 | 225 < HBW < 350 | Ø 90X17 mm | 0,8 kg
HBW 5/750 | 350 < HBW < 650 | Ø 90X17 mm | 0,8 kg
HBW 5/250* | 75 < HBW < 150 | Ø 60X10 mm | 0,2 kg
HBW 5/250* | 150 < HBW < 300 | Ø 60X10 mm | 0,2 kg
HBW 5/250* | 300 < HBW < 450 | Ø 60X10 mm | 0,2 kg
HBW 5/125* | 75 < HBW < 150 | Ø 60X10 mm | 0,2 kg
HBW 5/125* | 150 < HBW < 300 | Ø 60X10 mm | 0,2 kg
HBW 5/125* | 300 < HBW < 450 | Ø 60X10 mm | 0,2 kg
HBW 5/62,5* | 75 < HBW < 150 | Ø 60X10 mm | 0,2 kg
HBW 5/62,5* | 150 < HBW < 300 | Ø 60X10 mm | 0,2 kg
HBW 5/62,5* | 300 < HBW < 450 | Ø 60X10 mm | 0,2 kg
HBW 2.5/187.5 | 100 < HBW < 225 | Ø 90X17 mm | 0,8 kg
HBW 2.5/187.5 | 225 < HBW < 350 | Ø 90X17 mm | 0,8 kg
HBW 2.5/187.5 | 350 < HBW < 650 | Ø 90X17 mm | 0,8 kg
HBW 2.5/62.5 | 75 < HBW < 150 | Ø 60X10 mm | 0,2 kg
HBW 2.5/62.5 | 150 < HBW < 300 | Ø 60X10 mm | 0,2 kg
HBW 2.5/62.5 | 300 < HBW < 450 | Ø 60X10 mm | 0,2 kg
*These master hardness test blocks are subject to availability.

Vickers - Table
Hardness Scale | Hardness Range | Size mm with mirror surface | Weight
HV2* | 200 < HV2 < 350 | Ø 60X10 mm | 0,2 kg
HV2* | 350 < HV2 < 450 | Ø 60X10 mm | 0,2 kg
HV2* | 450 < HV2 < 750 | Ø 60X10 mm | 0,2 kg
HV3* | 200 < HV3 < 350 | Ø 60X10 mm | 0,2 kg
HV3* | 350 < HV3 < 450 | Ø 60X10 mm | 0,2 kg
HV3* | 450 < HV3 < 750 | Ø 60X10 mm | 0,2 kg
HV5 | 175 < HV5 < 350 | Ø 60X10 mm | 0,2 kg
HV5 | 350 < HV5 < 450 | Ø 60X10 mm | 0,2 kg
HV5 | 450 < HV5 < 750 | Ø 60X10 mm | 0,2 kg
HV10 | 175 < HV10 < 350 | Ø 60X10 mm | 0,2 kg
HV10 | 350 < HV10 < 450 | Ø 60X10 mm | 0,2 kg
HV10 | 450 < HV10 < 750 | Ø 60X10 mm | 0,2 kg
HV20* | 175 < HV20 < 350 | Ø 60X10 mm | 0,2 kg
HV20* | 350 < HV20 < 450 | Ø 60X10 mm | 0,2 kg
HV20* | 450 < HV20 < 750 | Ø 60X10 mm | 0,2 kg
HV30 | 175 < HV30 < 350 | Ø 60X10 mm | 0,2 kg
HV30 | 350 < HV30 < 450 | Ø 60X10 mm | 0,2 kg
HV30 | 450 < HV30 < 750 | Ø 60X10 mm | 0,2 kg
HV50* | 175 < HV50 < 350 | Ø 60X10 mm | 0,2 kg
HV50* | 350 < HV50 < 450 | Ø 60X10 mm | 0,2 kg
HV50* | 450 < HV50 < 750 | Ø 60X10 mm | 0,2 kg
HV100* | 175 < HV100 < 350 | Ø 60X10 mm | 0,2 kg
HV100* | 350 < HV100 < 450 | Ø 60X10 mm | 0,2 kg
HV100* | 450 < HV100 < 750 | Ø 60X10 mm | 0,2 kg
*These master hardness test blocks are subject to availability.

Micro Vickers - Table
Hardness Scale | Hardness Range | Size mm with mirror surface | Weight
HV0.01* | 200 < HV0.01 < 350 | Ø 25X10 mm | 0,1 kg
HV0.01* | 350 < HV0.01 < 450 | Ø 25X10 mm | 0,1 kg
HV0.01* | 450 < HV0.01 < 750 | Ø 25X10 mm | 0,1 kg
HV0.015* | 200 < HV0.015 < 350 | Ø 25X10 mm | 0,1 kg
HV0.015* | 350 < HV0.015 < 450 | Ø 25X10 mm | 0,1 kg
HV0.015* | 450 < HV0.015 < 750 | Ø 25X10 mm | 0,1 kg
HV0.02* | 175 < HV0.02 < 350 | Ø 25X10 mm | 0,1 kg
HV0.02* | 350 < HV0.02 < 450 | Ø 25X10 mm | 0,1 kg
HV0.02* | 450 < HV0.02 < 750 | Ø 25X10 mm | 0,1 kg
HV0.025* | 175 < HV0.025 < 350 | Ø 25X10 mm | 0,1 kg
HV0.025* | 350 < HV0.025 < 450 | Ø 25X10 mm | 0,1 kg
HV0.025* | 450 < HV0.025 < 750 | Ø 25X10 mm | 0,1 kg
HV0.05* | 175 < HV0.05 < 350 | Ø 25X10 mm | 0,1 kg
HV0.05* | 350 < HV0.05 < 450 | Ø 25X10 mm | 0,1 kg
HV0.05* | 450 < HV0.05 < 750 | Ø 25X10 mm | 0,1 kg
HV0.1 | 175 < HV0.1 < 350 | Ø 25X10 mm | 0,1 kg
HV0.1 | 350 < HV0.1 < 450 | Ø 25X10 mm | 0,1 kg
HV0.1 | 450 < HV0.1 < 750 | Ø 25X10 mm | 0,1 kg
HV0.2 | 175 < HV0.2 < 350 | Ø 25X10 mm | 0,1 kg
HV0.2 | 350 < HV0.2 < 450 | Ø 25X10 mm | 0,1 kg
HV0.2 | 450 < HV0.2 < 750 | Ø 25X10 mm | 0,1 kg
HV0.3 | 175 < HV0.3 < 350 | Ø 25X10 mm | 0,1 kg
HV0.3 | 350 < HV0.3 < 450 | Ø 25X10 mm | 0,1 kg
HV0.3 | 450 < HV0.3 < 750 | Ø 25X10 mm | 0,1 kg
HV0.5 | 175 < HV0.5 < 350 | Ø 25X10 mm | 0,1 kg
HV0.5 | 350 < HV0.5 < 450 | Ø 25X10 mm | 0,1 kg
HV0.5 | 450 < HV0.5 < 750 | Ø 25X10 mm | 0,1 kg
HV1 | 175 < HV1 < 350 | Ø 25X10 mm | 0,1 kg
HV1 | 350 < HV1 < 450 | Ø 25X10 mm | 0,1 kg
HV1 | 450 < HV1 < 750 | Ø 25X10 mm | 0,1 kg
*These master hardness test blocks are subject to availability.

F.A.Q. (summarized)

• A hardness test block is a certified reference specimen with a defined hardness value used to verify performance and accuracy of a hardness testing machine.
• Used for routine checks, periodic calibrations, after repairs/adjustments, and to ensure consistency across operators or machines.
• Certified blocks are typically required to comply with ISO/IEC 17025, ISO or ASTM standards, internal/external audits, and processes requiring traceable results.
• Maintenance recommendations: avoid repeated testing on the same area, store in a protective case away from dust/humidity, clean with alcohol or lint-free cloth, avoid contamination/oil residue, replace when worn, and recalibrate annually or per internal procedures.

Caractéristiques / spécifications techniques

• Manufacturer / Brand: AFFRI TESTING INSTRUMENTS (ATI)
• Accreditation: ISO/IEC 17025 accredited laboratory (ANAB accreditation No. AC-3026.01)
• Traceability: ILAC-MRA recognition
• Available test methods: Rockwell (incl. superficial scales), Brinell, Vickers, Micro Vickers, Knoop
• Typical block sizes: Ø 90x17 mm, Ø 60x10 mm, Ø 25x10 mm, 50x50 mm (square for some HRB ranges)
• Typical weights: 0,8 kg (larger Brinell blocks), 0,2 kg (Ø 60x10 mm blocks), 0,1 kg (micro Vickers blocks)
• Hardness ranges covered: wide ranges for each scale as detailed in tables (Rockwell, Brinell, Vickers, Micro Vickers)
• Use cases: verification and calibration of hardness testers for laboratories and industrial quality control
• Availability note: Some master hardness test blocks are subject to availability