Question

1. By comparing your researched values, obtained through the experiment, with those of the steel manufacturer's: By comparing your researched mechanical properties obtained through this experiment, with those of the steel manufacturer's mechanical properties: (i) Do you find that the material is suitable for the chosen application, i.e. is it "Fit for Purpose"? Compare the critical mechanical properties of Yield Strength, Ultimate tensile Strength, Ductility and Hardness values and state the values in the table below Write a statement about the its suitability giving evidence from your research using mechanical properties in your answer (150 words max). (iii) te: For the material to be fit for purpose, the researched mechanical properties determined in this periment must be equal to or exceed the manufacturer's specification.

Answer 1

1)Elongation at break for mild steel (in 50 mm) is 15% . Hence the material is not suited for the application If it undergoes a elongation of more than 15 percent which is approx 32 percent.

2) The critical mechanical properties are as follow

AISI 1080 hot rolled steel

Mechanical Properties Metric Imperial Hardness, Brinell 126 126 Hardness, Knoop (Converted from Brinell hardness) 145 145 Hardness, Rockwell B (Converted from Brinell hardness) 71 71 Hardness, Vickers (Converted from Brinell hardness) 131 131 Tensile Strength, Ultimate 440 MPa 63800 psi Tensile Strength, Yield 370 MPa 53700 psi Elongation at Break (In 50 mm) 15.0 % 15.0 % Reduction of Area 40.0 % 40.0 % Modulus of Elasticity (Typical for steel) 205 GPa 29700 ksi 140 Bulk Modulus (Typical for steel) 20300 ksi GPa Poissons Ratio (Typical For Steel) 0.290 0.290

3)

Regarding the suitability, It is clear that any type of mild steel should have value which are close to the research values. If that particular mild steel does not have a value close to the values of standard material or mild steel AISI 1080, It might not be suited for the application.