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In this study, the gamma radiation properties of four types of surgical-grade stainless steel (304, 304L, 316 and 316L) were investigated. The effective atomic number Ze  f  f, effective electron density Ne  f  fand half-value layer (HVL) of four types of surgical-grade stainless steel were determined via the mass attenuation coefficient(  μ  /  ρ  ). Theμ  /  ρcoefficients were determined experimentally using an X-ray fluorescence (XRF) technique and theoretically via the WinXCOM program. The Kα  1of XRF photons in the energy range between 17.50 and 25.29 keV was used from pure metal plates of molybdenum (Mo), palladium (Pd), silver (Ag) and tin (Sn). A comparison between the experimental and theoretical values ofμ  /  ρrevealed that the experimental values were lower than the theoretical calculations. The relative differences between the theoretical and experimental values were found to decrease with increasing photon energy. The lowest percentage difference between the experimental and theoretical values ofμ  /  ρwas between −6.17% and −9.76% and was obtained at a photon energy of 25.29 keV. Sample 316L showed the highest value ofμ  /  ρat the energies 21.20, 22.19 and 25.29 keV. In addition, the measured results of Ze  f  fand Ne  f  ffor all samples behaved similarly in the given energy range and were found to be in good agreement with the calculations. The equivalent atomic number (Ze  f  f) of the investigated stainless-steel samples was calculated using the interpolation method to compare the samples at the same source energy. The 316L stainless steel had higher values ofμ  /  ρ, Ze  f  fand Ze  qand lower values of HVL compared with the other samples. Therefore, it is concluded that the 316L sample is more effective in absorbing gamma radiation.

Evaluation of Gamma Radiation Properties of Four Types of Surgical Stainless Steel in the Energy Range of 17.50–25.29 keV