Metallurgy of Steel for Non-Specialists.doc

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Professional Training and Consultation

Metallurgy of Steel for Non-Specialist 17th-21st December 2005, Al- hobar

General Review Questions
1. Rapid quenching of steel from the austenitic range results in a hard, brittle structure known as: a. b. c. d. Pearlite Ferrite Cementite Martensite

. !hat heat treatment in"ol"es heating steels and holding at the austeniti#ing temperature for some time and then slow cooling in furnace$ a. %ormali#ing b. &uenching c. 'nnealing (. )enerall*, as strength increases for carbon steels, the ductilit*: a. b. c. d. +ncreases ,ta*s the same -ecreases +s not related to strength

.. /he abilit* of a metal to absorb shocks energ* is called : a. b. c. d. /ensile strength -uctilit* 0ardness +mpact strength

1. !hich allo*ing element impro"es strength and corrosion resistance of carbon steel$ a. b. c. d. 'luminum Carbon Manganese Chromium

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Professional Training and Consultation

Metallurgy of Steel for Non-Specialist 17th-21st December 2005, Al- hobar

2. !hich allo*ing element is commonl* added to steel to impro"e its creep strength: a. b. c. d. Mol*bdenum ,ilicon Chromium %one of the abo"e

3. /he point after which a metal can ha"e permanent deformation is referred to as : a. 4ltimate tensile strength b. Modulus of elasticit* c. %one of the abo"e 5. +n general, an increase in cooling time of steel will result in an increase in its$ a. b. c. d. -uctilit* 0ardness ,trength ' and 6 abo"e

7. 8f those micro9structural constituents listed below, the hardest is$ a. Martensite b. Ferrite c. 'ustenite 1:. +n ,' .: /P (:. and ,' .: /P (:.; stainless steel plates, which contains more carbon$ a. b. c. d. ,' .: /P(:. ,' .: /P (:.; 6oth ha"e same Carbon < /he* do not contain carbon

11. '112 )r. 3: specification the number 3: indicates a. b. c. d. Minimum *ield strength Minimum ultimate tensile strength Minimum < elongation %one of the abo"e.
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Professional Training and Consultation

Metallurgy of Steel for Non-Specialist 17th-21st December 2005, Al- hobar

1 . '112 )r. 3: specification the letter ' indicates a. b. c. d. /hat material is ',M= material >' for ',M=? /he material is Ferrous materials /hat material is non9Ferrous material %one of the abo"e.

1(. !hich of the following contains ferrous base metal specifications$ a. b. c. d. ',M= ,ection ++ Part C '!, '1.1 ',M= ,ection [email protected] ',M= ,ection ++ Part '

1.. ' materialAs ductilit* is commonl* eBpressed in terms of $ a. b. c. d. Percent elongation Percent carbon /ensile strength ' and 6 abo"e.

11. ,upplementar* requirements stated in ',M= sec. ++ specifications are: a. b. c. d. alwa*s met b* supplier met onl* if speciall* asked %e"er met b* supplier and purchaser has to arrange separatel*. %one of the abo"e

12. Compared to normal steels, killed steels are suitable for: a. ;ower strength b. 0igher temperature c. 0igher ductilit* d. %one of the abo"e 13. ',M= ,ect. ++ Part 6 co"ers a. b. c. d. !elding consumable specifications !elding gas specifications Ferrous material specification %one of the abo"e

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Professional Training and Consultation

Metallurgy of Steel for Non-Specialist 17th-21st December 2005, Al- hobar

15. %'C= :131 specifies materials for a. b. c. d. 0igh temp. ser"ice Cold ser"ice ,our ser"ice %one of the abo"e

17. ;ow hardness material is : a. %ot suitable for sour ser"ice b. More suitable for sour ser"ice c. 0ardness does not matter at all. :. 'ddition of %ickel to Carbon steel help to use steel at : a. ;ow temperature b. 0igh temperature c. 0as no effect 1. !hich of the following is likel* to be killed and fine grained. a. b. c. d. Plain carbon steel >C C steel? C9Mn steel C C ,i steel C9 ,i9Mn steel

. 'n* stainless steel must contain: a. b. c. d. %ickel abo"e 5< Chromium abo"e 5< Mol*bdenum below .< Chromium abo"e 11.1 <

(. !hich of the following are least likel* to undergo carbide precipitation : a. b. c. d. ,, (:. ,, (:.; ,tabili#ed stainless steel > ,tabili#ed ,, (:. /i C ,, ( 1? ,, (:. 0

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Professional Training and Consultation

Metallurgy of Steel for Non-Specialist 17th-21st December 2005, Al- hobar

.. ,ensiti#ation is a phenomenon which takes place: a. b. c. d. at all termperatures below sensiti#ation temperature. 't all temperatures abo"e sensiti#ation temperature 8nl* between two temperatures /he phenomenon is independent of temperatures

1. +dentif* incorrect statement a. Corrosion resistance of steel increases with increasing %i content. b. Fine grained structure is good for ele"ated temperatures c. Material losse ductilit* at higher temperatures while it loses strength at low temperatures. 2. ' steel anal*sis showed following results Cr D 15.1<, %i D 5.2<, C D :.: 1<, Mo D .5< it is likel* to be a. b. c. d. e. f. ,, (:. Martensitic ,., Ferritic ,.,. ,, (12 ,, (:.; ,, (12;

3. 'rrange following processes in the descending order to temperatures at which the* are carried out : 1. Forging . Casting (. ,tress relie"ing .. Pre9heating a. 1,(,., b. ,(,.,1 c. (,1, ,. d. none of these 5. ' t*pical :..< carbon held at 21:oC will show a. b. c. d. 'ustenitic ,tructure Ferrite E Pearlite Ferrite E Martensite Ferrite E 'ustenite

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Professional Training and Consultation

Metallurgy of Steel for Non-Specialist 17th-21st December 2005, Al- hobar

7. ' stainless steel eBhibiting satisfactor* resistance to high temperature oBidation as well as chemical corrosion will be : a. b. c. d. (:. 0 (12 ; (12 0 (:.

(:. ,uggest suitable ',/M specification for pipes to be used for ser"ice temperature of C 1oC (1. !hich of the following materials will be adequate for superheated steam ser"ice with design temperature of .5:oC >572oF? a. b. c. d. ' 1:2 )r. 6 ' 1( )r. 6 ' ((1 P 11 ' ((1 P

( . Certain piping specification requires pipe flanges conforming to ',/M '(1: ;F(.Four french client wants to use equi"alent locall* a"ailable flanges conforming to French specification. !hat equi"alent specification will *ou suggest and with what additional requirements if an*. &uantif* additional requirements. ((. Four client is constructing a refrigeration plant. /he plant piping design temperature is C7:oC >91(:oF? client has suggested M.8.C. for pipes as '((( )r. (, and has asked *ou to pro"ide flanges, tubes, fasteners of compatible specifications. ,uggest what ',/M specs will *ou adopt. (.. /he upper limit for hardness for most of the ferrous material for %'C= ser"ice >,our ser"ice? is a. : 0RC b. 1 0RC c. 5 0RC d. %one of these

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Professional Training and Consultation

Metallurgy of Steel for Non-Specialist 17th-21st December 2005, Al- hobar

(1. For specifications ' 1:2 , silicon has significant effect. +dentif* correct effect of ,i a. b. c. d. ,i makes ' 1:2 pipes suitable for high temperature use ,i makes '1:2 pipes suitable for low temp. use. ,i helps ' 1:2 pipes to be manufactured as seamless 'll abo"e are correct statements.

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Professional Training and Consultation

Metallurgy of Steel for Non-Specialist 17th-21st December 2005, Al- hobar

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Professional Training and Consultation

Metallurgy of Steel for Non-Specialist 17th-21st December 2005, Al- hobar

(2. +dentif* incorrect statement d. Corrosion resistance of steel increases with increasing %i content. e. Fine grained structure is good for ele"ated temperatures f. Material losse ductilit* at higher temperatures while it loses strength at low temperatures. g. 'll statements abo"e are correct. (3. ' steel anal*sis showed following results Cr D 15.1<, %i D 5.2<, C D :.: 1<, Mo D .5< it is likel* to be g. h. i. G. k. l. ,, (:. Martensitic ,., Ferritic ,.,. ,, (12 ,, (:.; ,, (12;

(5. Pipes with same schedule number but of different diameters means a. b. c. d. Pipes are of same thickness as sch. %o. is same. Pipes are of same pressure carr*ing capacit* if material is same Pipes are of same materials irrespecti"e of diameter and thickness ,chedule number is Gust dimensionless number and is not related to an* of abo"e parameters.

(7. 'rrange following processes in the descending order to temperatures at which the* are carried out : 1. Forging . Casting (. ,tress relie"ing .. Pre9heating e. 1,(,., f. ,(,.,1 g. (,1, ,. h. none of these >8P=% 688H C Materials qui#? .:. ' t*pical :..< carbon held at 21:oC will show d. 'ustenitic ,tructure e. Ferrite E Pearlite f. Ferrite E Martensite
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Professional Training and Consultation

Metallurgy of Steel for Non-Specialist 17th-21st December 2005, Al- hobar

g. Ferrite E 'ustenite .1. Choose correct statement C a. For normali#ing, the steel >:.(< C? it shall be heated to 3:: oC and rapidl* cooled b* putting it in water b. For stress relie"ing, the carbon steel shall be heated to .:: oC and slowl* cooled. c. For annealing the steel > :.( < C? it shall be heated to about 7 : C and slowl* cooled under water controlled condition d. For quenching and hardening of steel, it shall be heated to 3 : oC and rapidl* cooled in water. . . ' stainless steel eBhibiting satisfactor* resistance to oBidation as well as chemical corrosion will be : e. f. g. h. (:. 0 (12 ; (12 0 (:.

.(. ,uggest suitable ',/M specification for pipes to be used for ser"ice temperature of C 1oC a. ,' ((( )r. 1 ... !hich of the following materials will be suitable for superheated steam ser"ice with design temperature of .5:oC >572oF? e. f. g. h. ' 1:2 )r. 6 ' 1( )r. 6 ' ((1 P 11 ' ((1 P

.1. Certain piping specification requires pipe flanges conforming to ',/M '(1: ;F(.Four french client wants to use equi"alent locall* a"ailable flanges conforming to French specification. !hat equi"alent specification will *ou suggest and with what additional requirements if an*. &uantif* additional requirements. 'F0 1.
8th Floor, Al-Subeaei Towers, King Abdulaziz cor. Prince Faisal Bin Fahd Streets, Al-Khobar, Saudi Arabia ● TE !"##$ % 88& ##%% ● FA' !"##$ % 88& #(#( ● in)o*gotoitc.co+ ● www.gotoitc.co+

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Professional Training and Consultation

Metallurgy of Steel for Non-Specialist 17th-21st December 2005, Al- hobar

.2. Four client is constructing a refrigeration plant. /he plant piping design temperature is C7:oC >91(:oF? client has suggested M.8.C. for pipes as '((( )r. (, and has asked *ou to pro"ide flanges, tubes, fasteners of compatible specifications. ,uggest what ',/M specs will *ou adopt. '%, C F; C ,' (1: )r. ;F( /ube C ,' 27 /P (:. I ,' ((. /( Plate C ,' :( )r. - or = Fast C ,' ( : )r. ;3, ,a 17. )r . .3. /he upper limit for hardness for most of the ferrous material for %'C= ser"ice >,our ser"ice is e. : 0RC f. 1 0RC g. 5 0RC h. %one of these .5. ,elect optimum rating for pipe flanges '1:1 for Pr D .: 6ar and temp. D .1:oC '? .::J .7. For specifications ' 1:2 and '1(, silicon has significant effect. +dentif* correct effect of ,i e. f. g. h. ,i makes ' 1:2 pipes suitable for low temperature use ,i makes '1:2 pipes suitable for low temp. use. ,i helps ' 1:2 pipes to be manufactured as seamless 'll abo"e are correct statements.

8th Floor, Al-Subeaei Towers, King Abdulaziz cor. Prince Faisal Bin Fahd Streets, Al-Khobar, Saudi Arabia ● TE !"##$ % 88& ##%% ● FA' !"##$ % 88& #(#( ● in)o*gotoitc.co+ ● www.gotoitc.co+

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Professional Training and Consultation

8th Floor, Al-Subeaei Towers. King Abdulaziz cor. Prince Faisal Bin Fahad Streets, Al-Khobar, , Saudi Arabia ● TE !"##$ % 88& ##%% ● FA' !"##$ % 88& #(#( ● in)o*gotoitc.co+ ● www.gotoitc.co+

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