TFC Alloy Composition Calculator
Calculation Results
Understanding TFC Alloy Calculations
The TFC (Theoretical Final Composition) Alloy Calculator is an essential tool for metallurgists and foundry engineers. Precise composition control is critical when creating high-performance alloys such as Superalloys, Stainless Steels, or Tool Steels. Even a minor deviation in element percentages can significantly alter the mechanical properties, corrosion resistance, and thermal stability of the final product.
Why Element Precision Matters
- Phase Stability: Proper ratios prevent the formation of brittle phases like the Sigma phase in stainless steel.
- Corrosion Resistance: Elements like Chromium and Molybdenum must meet specific thresholds to provide effective passivity layers.
- Thermal Expansion: In precision engineering, the TFC dictates the coefficient of thermal expansion (CTE) of the component.
Practical Example
To create 500kg of an Inconel-style alloy with 60% Nickel, 20% Chromium, and 15% Molybdenum, the calculator determines the exact mass of pure raw material required. The remaining 5% is usually attributed to "Balance" elements like Iron or trace scavengers like Manganese and Silicon.
| Element Group | Percentage | Required Mass |
|---|---|---|
| Primary Element | ' + p1 + '% | ' + w1 + ' kg |
| Secondary Element | ' + p2 + '% | ' + w2 + ' kg |
| Tertiary Element | ' + p3 + '% | ' + w3 + ' kg |
| Balance (Others) | ' + balancePct.toFixed(1) + '% | ' + wBalance + ' kg |
*Calculated based on a total target melt of ' + totalWeight + ' kg. Ensure raw material purity factors are applied to these results for final batching.
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