Sorry for my poor english. I did tensile test of aluminium(purity more than 99%. 1000series). The three specimens had tensile directions of 0, 45, and 90 degrees for each rolling direction. strength(both yield and UTS)is higher degree closer 0 degree. and %elongation is too. but modulus of elasticity is 45 degree is highest, and 90 degree is next. How can I explain this? I think it is depends on grain shape. grains of cold rolled metal is looks like a long stick. I searched book and internet, but they don't explain specific reason, and all of them is different experiment result from mine. especially, there are many case in that reverse on my result, or if strength is high, elongation is low. All specimens appear to be extremely hardened(necking was started just after yield, and elongation is 4~9%) but their strength and modulus of elasticity is very lower than pure aluminium's properties in book(UTS 50~20 MPa, E 5~9 GPa).