Brinell Hardness of Cast Iron Class 35

Does the cast iron sample meet your Tensile and Yield requirements?

core strength has to be 135-155 as its austentitic state. Only tempering will give iron a higher tinsile strength, rearranging the molecules into a more crystalline martenistic or pearlistic state. Core strength of iron even in forged kitana swords remains at these values, though the tempered surface can reach 70 rockwell. I have been told by experts as well that once annealed core values of iron will never exceed the values (135-155) as the structure returns to a martenistic crystalline, the core will never be harder.