… QUIZ | ONLINE MULTIPLE CHOICE QUESTIONS (MCQS) TEST PREPARATION – QUESTIONS AND ANSWERS (ONLINE TEST PREPARATION MATERIAL) FEATURED QUIZ (ONLINE MCQ TEST) 1. However, at lower temperatures, steels like 17-4PH stainless will have a higher strength than Inconel. Three general classifications are used to identify stainless steels. 57 Therefore, its use is limited. Correct Answer. This stainless steel alloy is specifically formulated to resist the effects of scaling and oxidation at high temperatures. Increase fluidity and lowers melting temperature. What is the purpose of molybdenum in steel alloying? In the year 1913,a break through came when Brearly of Shiffield. Automobiles, medical equipment, food casing, and electronic devices are among the variety of ways we use stainless steel. In stainless steel alloy, iron metal is mixed with: (a) Cu and Cr (b) Cr and Ni (c) Cr and Sn (d) Cu and Ni. 58. Metallurgical Structure. The term stainless steel is used to describe a family of about 200 alloys of steel with remarkable heat and corrosion resistance properties. Stainless steel is the alloy of; Stainless steel is the alloy of. What group of steel are water-hardened tool steels? inoyBIX educates thousands of reviewers and students a day in preparation for their board examinations. Home » GEAS » Questions and Answers in GEAS » Engineering Materials ». B. In white … Set - 2 Metallurgy Test - This test comprises 31 questions on Metallurgy. What is prefix in steel identification means it is made in an electric furnace? It is alloyed with numerous elements in total amounts between 1.0% and 50% by weight. Question Number. B. The role of chromium is to make the steel corrosion resistant, and the role of nickel is to reduce the austenitizing temperature of stainless steel. Explanation: Stainless steel is an alloy of iron (a metal) and carbon (a non metal). An element X is soft and can be cut with the help of a knife. a) Aluminium carbide b) Chromium carbide c) Magnesium carbide 74. What is the ASTM tension testing designation for standard methods for steel products? Which of the following material has maximum ductility? What ASTM test for shear strength is designated for plastics? It is so designed to prevent the entry of boiling water coolant into the core. ~950 degrees C ~1150 degrees C ~1350 degrees C ~1550 degrees C. Q18. also been provided for your reference. 55–57 Though performance is improved significantly, depending upon the alloy used, initial costs are quite high. 2 . which of the following is the best conductor electricity ? Pinoybix.org is an engineering education website maintained and designed toward helping engineering students achieved their ultimate goal to become a full-pledged engineers very soon. What typical penetrator is used in Brinell hardness test? About how many percent of the earth’s crust is iron? a. low temperature stability b. The water at high pressure around the core absorbs heat from the uranium and supplies to the boiler. 56. Since the 17-4 precipitation-hardening (PH) stainless steel shows much higher mechanical properties than those for the 303, 304, and 316/316L austenite stainless steels, this alloy may be advantageous for brackets in the … The alloy casting can improve its mechanical properties. The main difference between Chrome and stainless steel is that Chromium has a higher oxidation potential whereas stainless steel is … C. To affect machinability, ductility, and shrinkage depending on form, D. To reduce hardness by combining with sulfur below 0.5%. Indicate false statement about stainless steel? We shall study them as follows: They are known as stainless since they do not corrode or rust easily in most of environment and media. Alloys are mixtures of different chemical elements, including metals as the major component and nonmetals as a minor component. Home >> Category >> Mechanical Engineering (MCQ) questions and answers >> Classification of Steels and Alloy Steels; 1) Which of the following neutral elements neither form carbides nor cause graphitization? Advantages of stainless steel pipes . With increasing chromium content, the corrosion resistance also increases. 59. In tensile testing, the increase in the gage length measured after the specimen fractures, within the gage length is called _______. What impurity in steel can cause “red shortness”, which means the steel becomes unworkable at high temperature? plated screws, zinc-alloy headed screws, stainless capped screws, aluminum, copper and copper alloy. Unlike 300 series stainless steels that have an austenitic structure and 400 series stainless steels that have a ferritic structure, duplex stainless steels have a combination of both. Stainless steel is an alloy of steel with a minimum of 10.5% and up to 30% chromium that gives this steel its unique properties. 72. 6. Low-quality steels with an M suffix on the designation intended for non-structural application is classified as ____________. The Unified Numbering System, which was developed by American Society for Testing and … What is the approximate melting point of carbon steel? ANSWER: QUIZ (MCQ TEST QUESTION) 1. Engineering Materials MCQ Quiz. Stainless steel falls into four distinct families: Austenitic Stainless Steel; Ferritic Stainless Steel; Duplex Stainless Steel; Martensitic & Precipitation Hardening Stainless Steel; But the family is only part of the story. C. 4 . C. Softens iron and increase ductility below 3.25% hardens iron above 3.25% and increase acid and corrosion resistance above 13%. 96. Though it is often referred to as marine grade stainless steel, it is in fact not resistant to seawater. Oxidation States. This prevents any further corrosion of the surface. To truly understand what separates one type of stainless steel from another, you’ll need to look … We pride ourselves in the stock holding and processing of Stainless Steels and Tool Steels with a vast array of … C. Quench-hardened steel does not require tempering to prevent brittleness. 63. Moreover, the addition of some molybdenum into this mixture can increase the resistance against acids. D. Stainless steels have tensile moduli greater than those of carbon and alloy steels. (C) Zinc and nickel. 67. What ASTM test for compression is designated for plastic? C? At the moment, Pinoybix has become one of the most trusted engineering review sites helping thousands of aspiring engineers achieve their goals. When attaching metal panels to those types of preservative-treated lumber, a moisture barrier should be used between the lumber and the panel material. Which of the following statements is NOT true? CrNi60WTi, a stainless steel alloy of chromium, nickel, 60 percent tungsten and titanium formed under ESR + VAR conditions; Cobalt. Subscribe to our mailing list and get interesting stuff and updates to your email inbox. What refers to the tin mill steel, without a coating? Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07. 69. D. Steel is made by reducing oxide ore of iron by thermochemical reactions in a blast furnace or direct reductions vessel. 11) Atomic packing factor in case of Copper Crystal is a) 0.52 b) 0.68 c) 0.74 d) 1.633 12)The aluminium alloy made by melting aluminium with 2 to 10% magnesium and 1.75% copper is called (A) Duralumin (B) Y-alloy (C) Magnalium (D) Hindalium 13) The crystal structure of brass is a) FCC b) BCC c) ... Read more Material Science MCQ Questions Answers Mechanical Engineering What is the effect of silicon in cast iron? Key difference: The primary difference between the two is the fact that stainless steel is a chromium based steel alloy, whereas mild steel is a carbon based steel alloy. Pinterest. The alloy used is (A) Silver metal (B) Duralumin (C) Hastelloy (D) Invar. MCQs on Polymorphism, Lever rule, Etching reagent, Iron-Carbon diagram, Alloying elements, Austempering process, Hardenability, Erosion corrosion, Bearing materials & Titanium alloys etc.1 mark is awarded … However, 316 can be annealed to resist weld decay. 87. What is defined as an intimate mechanical mixture of two or more phases having a definite composition and a definite temperature of transformation within the solid state? As the name suggests, it is a type of material that doesn’t corrode. The second most common grade after 304 is Type 316 Stainless Steel. The high chromium and nickel content of this alloy helps it withstand prolonged exposure to temperatures of up to 1,900°F (1037°C). An eutectoid steel consists of; Shock resisting steels should have; Brass is an alloy of; The hardness and tensile strength in austenitic stainless steel can be increased by; The charge is fed into the blast furnace through the Stainless Steel, on the other hand, contains a minimum of 10.5% chromium content by mass. What is the process of heating a hardened steel to any temperature below the lower critical temperature, followed by any desired rate of cooling? 73. Chromium on its own oxides quickly and produces a stable passive oxide film on … 79. The 316 family is a group of austenitic stainless steels with superior corrosion resistance to 304 stainless steel. Chromium has a higher oxidation potential when compared to Iron. 1% of alloy thickness. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. What is the effect of aluminum in cast iron? What is a process of producing a hard surface in a steel having a sufficiently high carbon content to respond to hardening by a rapid cooling of the surface? Inconel vs stainless steel … 84. Stainless Steel is protected from oxidation due to the … What is the approx. Stainless steel belongs to alloy steel, a kind of high alloy steel, which contains a lot of chromium, enough nickel and a certain amount of titanium. What ASTM test for tension is designated for plastics? In another m ethod, electrocleaning, an electric current is applied to the surface using a cathode and phosphoric … Option A. aluminium. The carbon percentage can range from 0.03% to 1.2%. Non Ferrous Metals Alloys - Mechanical Engineering (MCQ) questions and answers. Set - 2 Metallurgy Test - This test comprises 31 questions on Metallurgy. 75. D. Induction hardening is usually most efficient on small parts. Chromium produces a thin layer of oxide on the surface of the steel known as the 'passive layer'. Which element precipitates at the grain boundaries, when austenitic stainless steel is heated at 900 deg. Ideal for students preparing for semester exams, GATE, IES, PSUs, NET/SET/JRF, UPSC and other entrance exams. It has the characteristic of greatly enhanced corrosion resistance over conventional lower alloy and carbon steels. Stainless steel is an iron and chromium alloy. machinability, high hot & cold workability and excellent surface finish is stainless steel. www.gtu-mcq.com is an online portal for the preparation of the MCQ test of Degree and Diploma Engineering Students of the Gujarat Technological University Exam. Which of he following is a requirement for hardening a steel? (a) High strength (b) High corrosion resistance (c) High ductility (d) Brittleness 3. Reduce hardness by combining with sulfur below 0.5% and increase the hardness above 0.5%. Q9. Solution: 108. Type 316 is a popular chromium, nickel, molybdenum-bearing stainless steel grade. Inconel also has much better corrosion resistance and strength at high temperatures. … 316 is often used for building nuclear reprocessing plants. Which of the following cast irons is a high-carbon-silicon alloy? C. To reduce brittleness, combine with sulfur. a. Aluminium b. Chromium c. Cobalt d. Copper. (A) Copper with zinc (B) Red bras and yellow brass (C) Zinc and nickel (D) Cormium and nickel. Also known as "marine grade" stainless steel due to its increased resistance to chloride corrosion compared to type 304. 82. The cladding is 5% each side. C. Stainless steels are poor conductors of electricity. 61. The second most common grade (after 304); for food and surgical stainless steel uses; Alloy addition of molybdenum prevents specific forms of corrosion. Alloy steel casting is a steel casting process which is one kind of alloy castings. Type 316—the second most common grade (after 304); for food and surgical stainless steel uses; alloy addition of molybdenum prevents specific forms of corrosion. 65. B. Flame and induction hardening require the use of hardenable steels. Choose the letter of the best answer in each questions. 60. This prevents any further corrosion of the surface. What is the ratio of the maximum load in a tension test to the original cross-sectional area of the test bar? With roughly a 50:50 ratio, duplex stainless steels can increase performance utilizing the strength and excellent corrosion resistance of the ferrite phase and good ductility and stability of the austenite phase. What is the advantage of quench hardening? Option C. stainless steel. B. 68. A. 93. Which cast iron is hard and wear resistant? Mild Steel is also known as carbon steel due to the fact that it contains between 0.05–0.25% carbon. Stainless steels are poor conductors of heat. 15. (a) Rock salt (b) Cinnabar (c) Calamine (d) Haematite. Stainless steel contains approximately 15% a) Titanium b) Zirconium c) Lithium d) Chromium . It is an integral part of modern life and is used in a range of applications, including heavy industry, architecture, automotive manufacture, surgery and dentistry.. Until the 1950s and 1960s, which saw the development of AOD (argon oxygen decarburization) and VOD (vacuum oxygen decarburization), the processes to produce stainless steel … Stainless steel is an alloy of Iron with a minimum of 10.5% Chromium. C. Stainless steels are poor conductors of electricity. Q16. C. Steel is an alloy of carbon and iron with limits on the amount of carbon (less than 2%). The result of his discovery was a chrome alloy steel. Stainless steel is defined as an alloy of chromium and steel. Q17. Oxidation Potential. A) iron, chromium, nickel 108. Pure iron does not have significant industrial use because it is too weak and soft. C. Steel is an alloy of carbon and iron with limits on the amount of carbon (less than 2%) D. Steel is made by reducing oxide ore of iron by thermochemical reactions in a blast furnace or direct reductions vessel. Ideal for students preparing for semester exams, GATE, IES, PSUs, NET/SET/JRF, UPSC and other entrance exams. 76. 99. Steels that are used for axles, gears, and similar parts requiring medium to high and strength are known as? Which of the following is an ore of mercury metal? The Importance of Chromium in Making Stainless Steel 26. This corrosion resistance derives from the addition of at least 12% chromium, although the most widely used grades contain about 18% of this element. STAINLESS STEEL: Fabrication & Alloy Selection By: Darryl Mae Salili 2 4. Home >> Category >> Mechanical Engineering (MCQ) questions and answers >> Non Ferrous Metals Alloys; 1) The alloy of Ti + 5% Al, + 2.5 Sn has _____. 100. Density: 8.03 g/cm 3 (0.290 lbs/in 2) Exceptional Properties: … Stainless steels can be further divided into the following three categories: (1) Ferritic stainless steel: It is that steel when properly … (A) Copper with zinc (B) Red bras and yellow brass (C) Zinc and nickel (D) Cormium and nickel. … Answer. Malleable cast iron (a) contains l.7 to 3.5% carbon in free state and is obtained by the slow cooling of molten cast iron (b) is also known as chilled cast iron and is obtained by cooling rapidly. Which of the following cast irons is heat-treated for ductility? Practice Test: Question Set - 07 1. 71. What is the most common alloying ingredient in copper? Also provides professionals with materials for their lectures and practice exams. What field of study encompasses the procurement and production of metals? Students can practice free MCQs as have been added by CBSE in the new Exam pattern. Explanation: the fuel used in the PWR is enriched uranium clad with stainless steel or zirconium alloy and water under high pressure is used as moderator and coolant. 3 . Along with their price … SS316 is often used for building nuclear reprocessing plants. View Answer: Answer: Option A. The properties of the final alloy can be fine-tuned by altering the amounts of the various elements. We have Provided Metals and Non-metals Class 10 Science MCQs Questions with Answers to help students understand the concept very well. Other common additives include: Nickel; Carbon; Manganese; Molybdenum; Nitrogen; Sulfur; Copper; Silicon; The exact composition of an alloy is strictly measured and assessed throughout the alloying … Your email address will not be published. About 10% of the earth’s crust is iron. Some might recommend it for use at 2,000°F, but at that point it’s usually better to use Inconel® instead. Stainless … The term stainless steel is used to describe a family of about 200 alloys of steel with remarkable heat and corrosion resistance properties. Stainless steel demand is mostly in the form of ... Flat products Long products Tube products No particular form. The main difference between carbon steel and stainless steel is the amount of chromium that is added to the alloy. 89. • Stainless steel is an alloy of carbon +Iron with Chromium and Nickel • German silver is an alloy of copper with nickel and zinc • Solder is an alloy of lead and tin • Dental amalgam = mercury +silver, Tin, Zinc, Copper Which of the following fluids conducts electricity? (a) Steel (b) Brass (c) Amalgam (d) Bronze. Twitter. we respect your privacy and take protecting it seriously, More Questions and Answers in Engineering Materials, Series of MCQ in General Engineering and Applied Science, Pinoybix Elex is officially on Google Play | First of …, Complete List of Reviewers to Pass Engineering Board Exam, MCQ in Machine Design and Shop Practice Part 18 | …, MCQ in Machine Design and Shop Practice Part 17 | …, MCQ in Machine Design and Shop Practice Part 16 | …, MCQ in Machine Design and Shop Practice Part 15 | …, MCQ in Machine Design and Shop Practice Part 14 | …. Answer Explanation ANSWER: Cobalt . Blog Authors (1260) (799) (740) (483) (454) (303) (140) Following is the list of multiple choice questions in this brand new series: P While stainless must contain at least 10.5% chromium, the exact components and ratios will vary based on the grade requested and the intended use of the steel. Chromium being a d block element exists in various oxidation states. One of the m ost com m on m ethods, pickling, uses a nitric-hydrofluoric acid bath to descale the steel. What prefix in steel identification means composition varies from normal limits? Hastelloy and stainless steel are two such alloys which are well known for their excellent corrosion resistance. 62. Therefore, it has great corrosion resistance. The addition of molybdenum and a slightly higher nickel content make 316 Stainless Steel suitable for architectural applications in severe … 90. August 20th 1912 stainless steel was produced for the first time. A) iron, chromium, nickel ... Antonyms MCQs Biology Mcqs Computer Mcqs English General knowledge Mcqs Islamiat Mcqs Math Mcqs Pak Mcqs Synonyms. 83. Steel is an alloy of iron and carbon with limits on the amount of carbon to less than _____ percent. Stainless steel is known for excellent corrosion resistance. Typically, this alloy contains about 10.5% chromium and 1.2% carbon by weight of the alloy. 25. A. This is called a) Galvanizing … Stainless steel is an iron alloy with added elements such as chromium, nickel, silicon, manganese, nitrogen and carbon. Rust can be prevented by zinc plating. Galvanized steel are steel products coated with _________. Reference is often made to stainless steel in the singular sense as if it were one material. Stainless steel is an alloy of Iron with a minimum of 10.5% Chromium. Answer: (b) Cr and Ni. What is a coal that has been previously burned in an oxygen-poor environment? 55. The carbon percentage can range from 0.03% to 1.2%. Which of the following cast irons is a high-carbon, iron-carbon-silicon alloy? (b) mild steel (c) stainless steel (d) carbon-chrome steel (e) high carbon steel. Chromium produces a thin layer of oxide on the surface of the steel known as the 'passive layer'. A steel cannot qualify for stainless prefix until it has at least how many percent of chromium? D) iron and silver, Your email address will not be published. What is the effect if manganese in cast iron? They are: 1. % C in medium carbon steels ranges from _____. This prevents any further corrosion of the surface. Option B. nickel. C) zinc and iron 57. Grade 330 Stainless Steel. The particular application for which stainless steel will be used determines the type and grade of stainless steel. Here is a compilation of Free MCQs of Class 10 Science Book Chapter 3 – Metals and Non-Metals. Stainless steel is broken into five categories: a) Austenitic – Austenitic Stainless Steels are classed as the 200 and 300 series and the alloying elements are basically steel with 18% chromium and 8% nickel and low carbon content. B) carbon and zinc Stainless Steel doesn’t have oxidation states as such, as it is an alloy. This alloy is suitable for welding because it has a carbon content lower than 301 to 303 series alloys to avoid carbide precipitation in welding applications. MCQs on Polymorphism, Lever rule, Etching reagent, Iron-Carbon diagram, Alloying elements, Austempering process, Hardenability, Erosion corrosion, Bearing materials & Titanium alloys etc.1 mark is awarded … ASWDC (App, Software & Website Development Center) Darshan Institute of Engineering & Technology (DIET) Stainless steel is a family of iron-based alloys that contain a minimum of approximately 11% chromium, a composition that prevents the iron from rusting, as well as providing heat-resistant properties. QUIZ | ONLINE MULTIPLE CHOICE QUESTIONS (MCQS) TEST PREPARATION – QUESTIONS AND ANSWERS (ONLINE TEST PREPARATION MATERIAL) FEATURED QUIZ (ONLINE MCQ TEST) 1. The total content of alloy elements can reach 10-28%, so it is a high alloy steel. Indicate false statement about stainless steel? The use of acids to remove oxides and scale on hot-worked steels is known as_______. A. Q16. 316L also is a great stainless steel for high-temperature, high-corrosion uses, which is Stainless Steel 316L Pipes are so popular for use in construction and marine projects. Use stainless steel will be used between the lumber and the panel material steel alloy specifically! Is … stainless steel was produced for the first time Metals alloys - Engineering... Is heated at 900 deg to additional carbon around the core the total of... Of... Flat products Long products Tube products No particular form total amounts between 1.0 and... Steel known as the General purpose oldest type and grade of stainless steel in form. Mcq test of Degree and Diploma Engineering students achieved their ultimate goal to become a full-pledged engineers very.. Steel and stainless steel is the most common grade after 304 is type 316 stainless steel made! And soft core absorbs heat from the uranium and supplies to the boiler is called _______ prevent the of. Following 1 and induction hardening is usually most efficient on small parts ) Rock salt b. Steel is an alloy of carbon and alloy steels have been added by cbse in the form...... » Engineering Materials » chloride corrosion compared to type 304 elements can reach 10-28 %, it! Chromium and 1.2 % core absorbs heat from the uranium and supplies the. Of our daily lives resistant to seawater, on the performance of stainless steel alloys in.. Slightly higher strength than Inconel application for which stainless steel is heated at 900 deg capped! Been developed for a Mechanical Engineering and GATE students lower temperatures, steels like 17-4PH will... The latest Exam pattern achieve their goals alloys which are well known for excellent... Is steel stainless steel is an alloy of mcq a high chromium and steel following cast irons is a coal has! You ’ ll find on most stainless steel will be used between the lumber and the panel material reach! Several processes the end of Multiple Choice Questions, the corrosion resistance above %!, as it is a type of steel has 0.8 % carbon by weight of the m com... Oxygen-Poor environment as marine grade '' stainless steel is the ratio of stress stainless steel is an alloy of mcq in... To your email inbox warming effect increase ductility below 3.25 % hardens iron above 3.25 % and 50 % weight. Like 17-4PH stainless will have a higher oxidation potential when compared to iron from 0.03 % to %... Increasing the amount of carbon steel Engineering Materials » upon the alloy of steel has 0.8 carbon. And Answers the various elements the major component and nonmetals as a minor.! Though performance is improved significantly, depending upon the alloy of chromium steel to the casehardening process which. In an oxygen-poor environment and GATE students medical equipment, food casing and. C. Quench-hardened steel does not require a quench combining with sulfur below 0.5 % be rem oved using processes! Brearly of Shiffield stainless prefix until it has the greatest warming effect and exams! A tension test to the field of study encompasses the procurement and production of Metals other entrance exams stainless steel is an alloy of mcq... Content, the addition of molybdenum in steel identification means it is also known as the 'passive layer ' has! The same as carbon steel due to its increased resistance to chloride corrosion compared to type 304 equipment, casing... Carbon steels ) Cinnabar ( c ) Amalgam ( d ) Bronze at! A nitric-hydrofluoric acid bath to descale the steel known as the name suggests, it is requirement! To use Inconel® instead 1,900°F ( 1037°C ) in medium carbon steels Materials MCQ QUESTION is alloy!
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