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Hardness Converter

Convert approximate HRC, Brinell, Vickers, and tensile strength values for steels.

Input

Conversions are approximate and best suited for carbon/alloy steels. Use the governing material specification for acceptance.

Converted Values

HRC
32.0
HB
304
HV
319
Tensile (est.)
148 ksi

Reference Chart

HRCHBHVTensile ksi
20235238115
25255266125
30286302140
35331345160
40375392185
45429446210
50489513245
55552595285
60654697335
65739832380

About this tool

Converts between Rockwell C, Brinell, Vickers, and approximate tensile strength for steels.

Inputs
  • A hardness value
  • Its scale (HRC, HB, or HV)
Assumptions
  • Non-austenitic carbon and alloy steels
  • Linear interpolation between the standard's table points
  • Tensile strength is an estimate, not a measured property
Sources
  • ASTM E140 standard hardness conversion tables
Valid range
  • HRC 20–65 and the corresponding HB / HV range.
Limitations
  • Not valid for aluminum, copper alloys, stainless with heavy cold work, or cast irons
  • Rockwell B and superficial scales are not included
  • Use the governing material spec for acceptance decisions

Values are starting points for planning — verify against your tooling and machine documentation before cutting. Report an issue with this tool →