30 Questions
What is the chief ingredient in ferrous metals?
Iron
What is the starting point for commercial iron products?
Pig iron
What process separates iron from oxygen when they are chemically mixed?
Reduction
What is the purpose of annealing in the context of iron?
To harden the iron
What element is found in pig iron as a major component?
Carbon
Which type of iron contains almost no carbon?
Wrought iron
What is the composition of Duplex steel?
Half ferritic and half austenitic
Why are stainless steels commonly used in medical equipment and food production equipment?
Due to ease of sterilization
What type of metals are tool steels typically alloyed with?
Vanadium, Cobalt, Molybdenum, Tungsten
What does the 'W' in W-shape structural steel member stand for?
Wide
In what applications are W-shapes commonly used?
As beams, columns, truss members
How do S-shapes differ from W-shapes in terms of strength?
W-shapes are stronger than S-shapes
What is the purpose of fitting the fractured ends of the sample together during a tension test?
To measure the elongation
How is the percentage elongation calculated in a tension test?
[ (Ls - Lo)/Lo) x 100]
When is the specimen recommended to be replaced during a tension test?
If the original specimen had wrong dimensions
What is used to calculate the rupture strength in a tension test?
(Ao - As)/Ao
Which method is employed to calculate the modulus of elasticity in a tension test?
Hooke’s law
What parameter does the percent reduction in cross-sectional area measure in a tension test?
(Ao - As)/As
What is the purpose of ASTM E290 Guided Bend Weld Test Fixture?
To convert motion from ELF and Instron fatigue testers into bending motion
In the bend test procedure, what does 'C' represent in the formula C = 2r + 3t ± t/2?
Distance between lower supports
Where should the bending force be applied during the bend test?
At mid-length between supports on the opposite side of the specimen from the end supports
What action should be taken if the required angle of bend cannot be achieved in the bend fixture?
Complete the test by pressing the specimen between suitable platens until the desired bend conditions are obtained
When not exceeding 180° of bend during testing, what should be done?
Place a spacer with thickness twice the required bend radius between the two legs of the specimen
How should the bending force be applied during testing?
Smoothly and without shock
What is the purpose of ASTM E350-95 standard test method?
To determine the chemical composition of various types of iron and steel
Which element has the highest concentration range as per the ASTM E350-95 standard test method?
Silicon
What is the concentration range for cobalt in the ASTM E350-95 standard test method?
0.01 to 0.30%
What is the purpose of the test methods outlined in ASTM E350-95 standard?
To analyze metals and alloys for compliance with compositional specifications
Which element has the lowest concentration range in the ASTM E350-95 standard test method?
Oxygen
What is the significance of the chemical analysis methods specified in ASTM E350-95?
Primarily intended as referee methods to test materials for compliance with compositional specifications
Learn how to analyze and interpret mechanical testing results including stress versus strain curves, yield strength determination, modulus of elasticity calculation, tensile strength calculation, and elongation measurement. Practice calculating percent elongation with provided formulas.
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