If a steel with a 33ksi yield strength is used for a cold-formed shape, what would be the approximate yield strength of the deformed corner after cold-forming?
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- A steel has a BHN = 300. What is its approximate ultimate strength in ksi?The aluminum (E=15x10^10psi, α=11.6x10^-6/°F) shell is fully bonded to the brass (E=10.6x10^6psi, α=12.9x10^-6/°F) sore, and the assembly is unstressed at a temperature of 78°F. Considering only axial deformations, determine the stress when the temperature reaches 180°F (a) in the brass core (b) in the aluminum shelli need quickly please please please Which of these cast iron would allow the greatest amount of plastic deformation before fracture . Nodular cast iron Grey cast iron White cast iron None of them can be worked. If the diameter of steel specimen stretched by tension load is doubled , then it’s tensile strength will be Halved Remain unaffected Doubled Become four times Temperature is proportional with Percent of elongation Tensile strength Modulus of elasticity All above The tensile strength of a steel specimen that have a 182 HB , equals to 490 MPa 910 MPa 627 MPa Not given…
- d) No increase Which of the following is not a property of steel materials? C a) Homogeneous and isotropic b) Linearly elastic stress-strain behavior c) Recyclable d) Fire-resistantA batch of casted mild steel has a modulus of elasticity of 200 GPa and a yield strength of 250 MPa. Calculate for its modulus of resilience. After cold working the steel, the yield strength increases to 310 MPa. Calculate for the percent reduction in the average grain diameter given σo = 70 MPa and k = 0.74.A mild steel bar has a gauge length of 80 mm and the total elongation is 0.08 mm, find the strain produced in it.
- A member which is subjected to reversible tensile or compressive stresses may fail at stresses may fail at stresses lower than the ultimate stresses of the material. This property of metal is calledThe linear portion of the stress- strain diagram of steel is known as the A Modulus of elasticity B Plastic range (c) Elastic range D Stain hardeningIs high hardenability desirable in steels? Explain your answer briefly [do not use chatgpt]
- Sketch the stress–strain behavior of steel, and identify different levels of strength. What is a typical value for yield strength of mild steel? What is theeffect of increasing the carbon content in steel on each of the each of thefollowing items?a. Yield strengthb. Modulus of elasticityc. DuctilityTask (3) you are asked to perform tensile test on specimens of two different materials (A and B) and you obtained the stress-strain diagram of the two specimens as shown in Figure 2: 400 350 300 250 Material A 200 150 100 50 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 Strain (mm/mm) 50 Material B 30 20 10 0.02 0.04 0.06 0.08 0.1 Strain (mm/mm) Figure 2: Tensile Test Analysis Stress (MPa) Stress (MPa)True of false? The more ductile steel is, the greater will be its toughness.