Steel 1045 Final Report

Results and Calculations
Figure 1: Stress-Strain Curve – Steel 1045 Figure 2: Stress-Strain Curve – Mild Steel

Figure 3: Stress-Strain Curve – Aluminium

Table 1: Physical Properties of Specimens
Material Initial Gauge Thickness (mm) Final Gauge Thickness (mm) Initial Gauge Width (mm) Final Gauge Width (mm) Initial Gauge Length (mm)
Final Gauge Length (mm)
Initial Cross-Sectional Area (mm2)
Final Cross-Sectional Area (mm2)

Steel 1045 6.0 5.8 12.3 11.7 50.2 57.9 73.8 67.9
Mild Steel 6.1 3.2 12.3 7.2 50.0 70.0 75.0 23.0
Aluminium 5.9 5.15 12.2 11.3 50.0 56.0 72.0 58.2

Sample Calculations of Mechanical Properties and Equations: (Steel 1045)
Modulus of elasticity (Slope of elastic section of Stress-Strain Curve, orange line indicates
Out of the three materials tested, the steel 1045 exhibited the most elastic properties, with it being able to deform elastically for a greater amount of stress than for the other specimens, as indicated by its stress-strain curve as shown in figure 1, and further supported by it having the highest modulus of elasticity of all three specimens, as shown in table 2. The mild steel specimen had the second greatest modulus of elasticity, and the aluminium specimen had the lowest modulus of
A published value on the modulus of resilience could not be located.
The published values for the mild steel specimen are, Modulus of elasticity = 200GPa (AZO Materials 2013a), Yield Strength = 250MPa (AZO Materials 2013a), Tensile Strength= 400-550MPa (AZO Materials 2013a), Ductility based on elongation=23%( AZO Materials 2013a), and ductility based on area of reduction = 15% (AZO Materials 2013a). A published value on the modulus of resilience could not be located.
The published values for the aluminium specimen are, Modulus of elasticity= 68.9GPa (ASM Incorporated n.d.), Yield Strength= 276MPA (ASM Incorporated n.d.), Tensile Strength= 310MPa (ASM Incorporated n.d.), Ductility based on elongation = 17% (ASM Incorporated n.d.). Published values on the ductility by reduction of area and the modulus of resilience could not be