Final answer:
An accurate calculation of tensile strength from hardness values requires specific empirical formulas or material property data that take into account the microstructure of the alloy. Typically, more spheroidite results in lower tensile strength, and fine pearlite provides higher strength than coarse pearlite.
Step-by-step explanation:
The relationship between hardness values and tensile strength of materials is an empirical one that relies on material property databases or established correlations specific to a group of materials. Since the question does not provide exact hardness values or a specific correlation formula, an accurate calculation of tensile strength cannot be made. However, tensile strength can generally be estimated from hardness through empirical formulas, which often require material-specific constants that take into account the microstructure of the alloy (like spheroidite, fine pearlite, or coarse pearlite). These constants would normally be found in materials property handbooks or from standardized test data.Typically, materials with more spheroidite have lower tensile strength compared to the same alloy with a pearlitic microstructure. For fine and coarse pearlite, the tensile strength can vary significantly within the same alloy composition, usually with fine pearlite providing a higher tensile strength due to its smaller, more closely packed structure.In a professional setting, determining the tensile strength of alloys would also involve consulting material science data, laboratory testing, or using standardized calculations provided by institutions such as ASTM International or ISO.