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Calcimator

Alloy Composition Calculator

Convert between weight percent and atomic percent for a three-element alloy system.

Inputs

oz
g/mol
oz
g/mol
oz
g/mol

Results

Element 1 Weight %

72.92 wt%

Element 2 Weight %

18.75 wt%

Element 1 Atomic %72.21 at%
Element 2 Atomic %19.94 at%
Element 3 Weight %8.33 wt%
Element 3 Atomic %7.85 at%
How to Use This Calculator
  1. Enter the weight and atomic mass of Element 1 (e.g., iron: weight 70 g, atomic mass 55.845).
  2. Set the weight and atomic mass of Element 2 (e.g., chromium: weight 18 g, atomic mass 51.996).
  3. Optionally add Element 3 weight and atomic mass for ternary alloys.
  4. The calculator outputs weight percent and atomic percent for each element.
  5. Use the composition results to verify alloy specifications or design custom blends.

How the result changes with Element 1 Weight

Element 1 WeightElement 1 Weight %Element 2 Weight %
10,00099.74 wt%0.18 wt%
35,00099.93 wt%0.05 wt%
65,00099.96 wt%0.03 wt%
90,00099.97 wt%0.02 wt%

What each input means

Element 1 Weight
Mass of the first element (e.g., Iron in steel).
Element 1 Atomic Mass
Atomic mass of element 1 (e.g., Fe = 55.845 g/mol).
Element 2 Weight
Mass of the second element (e.g., Chromium in stainless steel).
Element 2 Atomic Mass
Atomic mass of element 2 (e.g., Cr = 51.996 g/mol).
Element 3 Weight
Mass of the third element (e.g., Nickel in stainless steel). Set to 0 if binary alloy.
Element 3 Atomic Mass
Atomic mass of element 3 (e.g., Ni = 58.693 g/mol).

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Element 1 Weight = 70, Element 1 Atomic Mass = 55.845, Element 2 Weight = 18, Element 2 Atomic Mass = 51.996 = 6 input(s) provided
  2. Calculate Element 1 Weight %
    72.92 = 72.92
  3. Calculate Element 2 Weight %
    18.75 = 18.75
  4. Calculate Element 1 Atomic %
    72.21 = 72.21
  5. Calculate Element 2 Atomic %
    19.94 = 19.94

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