Soda lime silicate is an important industrial glass type, it is used in, e.g., windows, containers, household glasses, displays, cover glasses and in automotive glazing. The importance of soda lime silicate glass originates from the forming ability that enables low-cost manufacturing but also relatively high hardness, good chemical durability, and the essential transparency in the visible range. However, soda lime silicate glass suffers from brittleness and has a relatively low resistance towards surface defects. Therefore, is the practical strength of commercially available glass in the soda lime silicate glass family limited. The mechanical properties of glass is of great importance in various applications. Chemical strengthening (CS) of glass has become a successful process that today is used in many applications. It makes glass stronger by exchanging larger ions from a molten salt bath with smaller ions from the glass and thereby inducing compressive stresses in the surface. However, soda lime silicate glass is typically not well-suited for this process and therefore has the effect of dopants on surface mechanical properties as result of CS been studied. Hardness, reduced elastic modulus and crack resistance were studied. The CS was performed in a molten KNO3 salt bath at 450 °C. The results will be discussed in relation to the compositional and structural changes.