Question

please make sure it is correct

A copper alloy wire which is drawn from 18 mm to 12.72 mm diameter. What is the tensile strength in MPa of the wire after it has been cold drawn? 400 80 350 70 3001 Tense strength 60 250 50 024 proof strength 2001 40 20 LAN) og jod Opel Elongation I) 150 430 100 Hardness 100 20 Hardness (HV 50 Elongation 10 60 40 10 50 50 70 % Cold Work OL 285 ON 300 O 315 O IV 350

Answer 1

solution: Given. copper wine Initial Diameter (to] - 18 mm firal Diameter [t.p] = 12.72 mm. We know that A.- Af x 100. Ao % cold work Cow) 2 x0o. Do-Df D.² (18342.7272 (8) X100 %CW=. 50.06 low 50.06 7. from giver Graph we can say that Tensile strength 350 Mpa