Hardness Converter (Rockwell / Brinell / Vickers)
Convert hardness values between Rockwell C (HRC), Brinell (HB), and Vickers (HV) scales using approximate ASTM E140 formulas.
How to Use the Hardness Converter
- Enter the hardness value in the numeric field.
- Select the source scale: Rockwell C, Brinell, or Vickers.
- Click Calculate to get approximate values on the other two scales.
Anwendungsfälle
- •Comparing hardness data from different sources.
- •Quality control after heat treatment.
- •Converting material specifications between standards.
Formel
Approximate ASTM E140 conversions: HRC → HB: 0.1045×HRC² + 1.0595×HRC + 10.7; HRC → HV: 5.22×HRC + 53. Results are approximate.
Häufig gestellte Fragen
Which hardness scale is most common?
Rockwell C (HRC) is most common for hardened steels. Brinell (HB) suits softer materials. Vickers (HV) is universal and works for any material.
How accurate are the conversions?
Conversions are approximate per ASTM E140. Exact values depend on material composition and heat treatment.
Does a higher hardness number always mean harder?
Yes — a higher number always means a harder material. For example, hardened tool steel at HRC 60 is much harder than mild structural steel at HRC 20.