Metal Melting Energy Calculator
kWh to melt a charge — sensible heat plus latent heat of fusion.
Counter-intuitive: aluminium (0.32 kWh/kg theoretical) needs MORE energy per kg than iron (0.28) — its huge specific heat and latent heat beat iron's higher temperature. Recycling aluminium saves 95% versus smelting.
Formula
Metal Melting Energy Calculator is a free melting energy for design engineers, metallurgists and QA inspectors — instant, accurate and 100% client-side, with the governing formula and reference shown next to the result so the number can be defended, not just quoted.
About Metal Melting Energy Calculator
kWh to melt a charge — sensible heat plus latent heat of fusion. The calculation implements E = m·[c_p·(T_m−25) + L_f]/η (Metal thermophysical data — ASM). Counter-intuitive: aluminium (0.32 kWh/kg theoretical) needs MORE energy per kg than iron (0.28) — its huge specific heat and latent heat beat iron's higher temperature. Recycling aluminium saves 95% versus smelting.
How to use Metal Melting Energy Calculator
- 1Enter Charge mass in kg.
- 2Enter Metal (1 aluminium · 2 iron/steel · 3 copper · 4 zinc).
- 3Enter Furnace efficiency in % (Induction 60–75 · gas crucible 25–35).
- 4Read Energy required, Theoretical per kg instantly — no submit button needed.
- 5Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Metal Melting Energy Calculator?
- ✓Implements the standard formula — E = m·[c_p·(T_m−25) + L_f]/η
- ✓Reference cited on-page: Metal thermophysical data — ASM
- ✓One-click SI ⇄ Imperial toggle — values convert in place, physics stays in SI
- ✓Runs entirely in your browser — nothing uploaded, free forever
Frequently asked questions
What formula does the Metal Melting Energy Calculator use?+
It computes E = m·[c_p·(T_m−25) + L_f]/η, per Metal thermophysical data — ASM. The formula is displayed under the result.
What should I keep in mind when using this calculator?+
Counter-intuitive: aluminium (0.32 kWh/kg theoretical) needs MORE energy per kg than iron (0.28) — its huge specific heat and latent heat beat iron's higher temperature. Recycling aluminium saves 95% versus smelting.
Where do the material property defaults come from?+
Defaults are standard handbook values (ASM, manufacturer datasheets, the cited standard). Always substitute certified values from your material's test certificate for critical work.
Is the Metal Melting Energy Calculator free to use?+
Yes — completely free, no sign-up, no limits. It runs client-side in your browser, so inputs stay private and results are instant even on slow connections.
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