... End: Plain, beveled4)Test: Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yieldstrength, Elongation), Technical Properties (Flattening Test, Flaring Test, Bending Test ... 12, STKM 13, STKM 14, STKM 15, STKM 16, STKM 17, STKM 18, STKM 19, STKM 20DIN 2391: St30Si, St30A1, St35 ...