Benchtop Universal Testing Machine (0.5–2 kN)
Vector Tesla Series single-column benchtop universal testing machine for high-precision, low-force material testing — ASTM E4 / ISO 7500-1 Class 0.5.
Series: VTR-40
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Empirical relationships between Rockwell, Brinell, Vickers, and Shore hardness scales for metals and plastics; approximate only and material-specific per ASTM E140 guidance.
Material testing
Hardness Scale Conversion
Empirical relationships between Rockwell, Brinell, Vickers, and Shore hardness scales for metals and plastics; approximate only and material-specific per ASTM E140 guidance.
What it measures
Hardness conversion maps a result from one hardness scale to another using tabulated or fitted correlations. Conversions support specification review when only one scale is certified on site.
How it is tested
Conversions are not a test method—they are calculations applied after a valid hardness measurement on the correct scale, load, and indenter.
Standards and reporting
ASTM E140 and ISO 18265 emphasize conversions are approximate. Always state source equation and material class; prefer direct measurement on the required scale for acceptance.
Common errors
Applying steel correlations to aluminium, ignoring heat-treatment state, and treating converted values as metrologically equivalent to direct readings.
Compatible equipment
Universal Testing Machine (5–50 kN)
Vector Tesla Series dual-column floor-standing universal testing machine for industrial QA and R&D at 5–50 kN — ASTM E4 / ISO 7500-1 Class 0.5.
Series: VTR-40
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Hydraulic Universal Testing Machine
Vector Tesla Series VTR-H servo-hydraulic universal testing machine — 300 to 5000 kN capacity for tensile, compression and flexural testing on metals, concrete and structural composites.
Series: VTR-H
- ISO 7500-1
- ASTM E4
- DIN 51221
- +2 more
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Related calculator
Convert between HRC, HRB, Brinell HB, Vickers HV, and Shore D using common empirical correlations (ASTM E140 family).
Open calculator →Related terms
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Rockwell Hardness
Indentation hardness determined by measuring residual depth after a defined preliminary force, total test force, and recovery interval, expressed on scales such as HRC, HRB, and HRA.
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Brinell Hardness
Indentation hardness from a hardened steel or tungsten carbide ball indenter and applied force, evaluated by measuring the impression diameter and computing HBW or legacy BHN.
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Vickers Hardness
Microindentation hardness from a square-based diamond pyramid indenter, reported as HV from the impression diagonal length and applied force.
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Shore Hardness
Rebound or spring-indentation hardness of elastomers and plastics using durometer scales, most commonly Shore A for flexible rubbers and Shore D for rigid polymers.