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Micro-Vickers (HV) & Knoop (HK) Hardness Number Calculator

Easily calculate and compute micro-vickers (hv) & knoop (hk) hardness number calculator with accurate equations, live formulas, and expert guidance.

1 for square-based pyramid Vickers, 2 for elongated rhombic Knoop.

Standard microhardness test load (e.g. 100, 300, 500, 1000 gf).

Average diagonal for Vickers (µm) or major long diagonal for Knoop (µm).

Calculated Result
513.3 HV/HK

Hardness Number

Hardness Number

513.3 HV/HK

Hardness Number

513.3

Indentation Method

Vickers (HV)

Equivalent Contact Stress Gpa

5.03

Estimated Ultimate Tensile Strength Mpa

1668

513.3 — HV/HK

Calculation Breakdown

  1. Applied FormulaCalculates ASTM E384 micro-Vickers (HV) and Knoop (HK) hardness numbers from applied test loads and microscope optical diagonal measurements, with tensile strength estimates.HV = \frac{1.8544 \cdot P_{kgf}}{d_{mm}^2}, \quad HK = \frac{14.229 \cdot P_{kgf}}{L_{mm}^2}

Vickers & Knoop Hardness Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.0128257385513Hardness Number

What Is the Micro-Vickers (HV) & Knoop (HK) Hardness Number Calculator?

This tool computes micro-vickers (hv) & knoop (hk) hardness number calculator with high precision arithmetic.

How Does the Micro-Vickers (HV) & Knoop (HK) Hardness Number Calculator Work?

Calculates ASTM E384 micro-Vickers (HV) and Knoop (HK) hardness numbers from applied test loads and microscope optical diagonal measurements, with tensile strength estimates.

Micro-Vickers (HV) & Knoop (HK) Hardness Number Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

HV=1.8544⋅Pkgfdmm2,HK=14.229⋅PkgfLmm2HV = \frac{1.8544 \cdot P_{kgf}}{d_{mm}^2}, \quad HK = \frac{14.229 \cdot P_{kgf}}{L_{mm}^2}

Calculates ASTM E384 micro-Vickers (HV) and Knoop (HK) hardness numbers from applied test loads and microscope optical diagonal measurements, with tensile strength estimates.

How to Use the Micro-Vickers (HV) & Knoop (HK) Hardness Number Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Micro-Vickers (HV) & Knoop (HK) Hardness Number Calculator Example

Input Values:

testMethodType:1
appliedTestLoadGf:500
measuredIndentationDiagonalUm:42.5
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required HV/HK.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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