Tensile test results are mainly used to determine the basic standards of the work performance and processing performance of steel plates.
1. Elongation: The higher the elongation, the better the processing performance.
2. Yield point: The lower the yield point, the better the shape of the final product.
3. Yield ratio: (yield point/tensile strength) The lower the yield ratio, the greater the difference between the yield point and the tensile strength, and the better the shape-freeze when the steel plate is processed with equal strength.
4. Elasticity coefficient: The elasticity coefficient is inversely proportional to the resilience of the steel plate. The lower the resilience, the better the shape of the final product.
5. n-value (Work Hardening Index) The work-hardening index is obtained when the stress curve is near δε. The workability is proportional to the value of n.
6. r value (plastic deformation coefficient) In wo / w --------- In to / t wo, w = Width to before and after test, t = Reduction in the thickness-direction portion before and after the test (reduction ratio) ) is inversely proportional to the value of r, and less in the width direction is proportional to the value of r. Therefore, if the value of r is large, the steel plate is less prone to cracking and easier to process.