**5. Conclusions**

This paper presents a di fferent approach for the estimation of λ and ρ*cp* in metallic materials simultaneously depending on temperature. The materials analyzed were the AISI 304 stainless steel and AISI 1045 steel. The good results found can be confirmed since the di fference between the estimated values and literature is small, that is, lower than 7%, the standard deviation is the low, and the good uncertainty values are lower than 6%.

This work is validated to estimate λ and ρ*cp* simultaneously in metals. However, this technique may be applied to reliably estimate λ and ρ*cp* of metals that present thermal conductivity from 10 W/mK to 60 W/mK in a range of 25 ◦C up to 150 ◦C.

For future work, the use of a thermal model designed in three dimensions should be used to analyze the locations of temperature sensors in different positions to determine the areas that display better sensitivity to estimate λ and ρ*cp*.

**Author Contributions:** L.F.d.S.C. developed the methodology, conceived and wrote the paper; A.L.F.d.L.e.S. was the co-advisor of this work; and S.M.M.d.L.e.S. is a specialist in heat transfer and was the advisor of this work.

**Funding:** The authors would like to thank CNPq, FAPEMIG, and CAPES for their financial support.

**Conflicts of Interest:** The authors declare no conflict of interest. The founding sponsors had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.
