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Hardness Converter

Unit Converters

HRC/HB/HV, tensile strength

Quick Answer

Hardness Converter: HRC/HB/HV, tensile strength. Hardness Converter uses standard unit conversion formulas to compute accurate results instantly.

From HRC (Rockwell C)

HRC (20–65)
HRC45
HV (Vickers)436
HB (Brinell)420
Tensile ≈ (MPa)1,560

Calculation steps

  1. 1HRC 45 falls in ASTM E140 rows HRC 45–50 (HV 436–509)
  2. 2Interpolation k = (45 − 45) ÷ (50 − 45) = 0.00; HV = 436 + 0.00 × 73 = 436
  3. 3Same ratio gives HB ≈ 420, tensile ≈ 1,560 MPa

From HB (Brinell)

HB (218–800)
HB400
HRC ≈43.2
HV ≈455
Tensile ≈ (MPa)1,320

Calculation steps

  1. 1HB 400 → interpolated HRC ≈ 43.2, HV ≈ 455
  2. 2Tensile strength ≈ HB × 3.3 = 400 × 3.3 = 1,320 MPa (steel rule of thumb)

ASTM E140 reference (steel)

HRCHVHBTensile (MPa)
658208002580
606976702240
555955721990
505094901760
454364201560
403773631390
353273151240
302862761110
252532441000
20226218900

Based on ASTM E140 conversion table for non-austenitic steels (approximate).

Different materials (copper, aluminum) need their own tables; tensile ≈ HB × 3.3 for steel.

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Formula & How It Works

Hardness Converter formula

Hardness Converter uses standard unit conversion formulas to compute accurate results instantly.

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Source & Updates

Based on SI conversion factors and international standards. Last updated: 2025-07

Authoritative sources:

Last updated:

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