Question 1

Which of the following is not a common defect if the wrong filler metal is selected for a weld?

Accepted Answer

A)  Porosity 
B)  Cracks 
C)  Underfill 
D)  Filler metal that just will not stick 
A)  Porosity 
B)  Cracks 
C)  Underfill 
D)  Filler metal that just will not stick C

Question 2

Low-carbon steel has a carbon content of less than ____ %.

Accepted Answer

A)  0.15 
B)  0.30 
C)  0.50 
D)  30 
A)  0.15 
B)  0.30 
C)  0.50 
D)  30 B

Question 3

What type of flux is required to gas weld cast iron?

Accepted Answer

A)  C-flux 
B)  Acid flux 
C)  High-temperature cast iron welding flux. 
D)  No flux is required to gas weld cast iron. 
A)  C-flux 
B)  Acid flux 
C)  High-temperature cast iron welding flux. 
D)  No flux is required to gas weld cast iron. C

Question 4

If the chromium-nickel content of a stainless steel is referred to as 25-12, then it contains ____.

Accepted Answer

A)  25% nickel and 12 percent chromium 
B)  75% chromium and 8 percent nickel 
C)  25% chromium and 12 percent nickel 
D)  75% nickel and 8 percent chromium 
A)  25% nickel and 12 percent chromium 
B)  75% chromium and 8 percent nickel 
C)  25% chromium and 12 percent nickel 
D)  75% nickel and 8 percent chromium

Question 5

____________________ steels are used because of increasing demand for high strength and less weight.

Accepted Answer

The answer of ____________________ steels are used because of increasing...

Question 6

Describe the two recommended procedures to be observed for arc welding tool steel.

Accepted Answer

In arc welding tool steels, one of the f

Question 7

Explain why a part must be cleaned before repair or maintenance welding can be performed.

Accepted Answer

It is never safe to weld on any part tha

Question 8

Summarize the uses of chromium-molybdenum steel, including applications it is used for, processes used to weld it, and its tensile strength.

Accepted Answer

Chromium-molybdenum steel is used for hi

Question 9

Which type of cast iron is the most widely used?

Accepted Answer

A)  Gray 
B)  White 
C)  Malleable 
D)  Alloy 
A)  Gray 
B)  White 
C)  Malleable 
D)  Alloy

Question 10

When welding tool steel using the gas welding method, the rods selected for welding repairs should have ____.

Accepted Answer

A)  a carbon content matching the base metal 
B)  a much higher carbon content than the base metal 
C)  a slightly higher carbon content than the base metal 
D)  a much lower carbon content than the base metal 
A)  a carbon content matching the base metal 
B)  a much higher carbon content than the base metal 
C)  a slightly higher carbon content than the base metal 
D)  a much lower carbon content than the base metal

Question 11

The term ____________________ describes the ease with which a metal can be welded properly.

Accepted Answer

The answer of The term ____________________ describes the ease with...

Question 12

The strength of ____ stainless steels is the result of a special heat treatment.

Accepted Answer

A)  ferritic 
B)  austenitic 
C)  martensitic 
D)  precipitation hardening 
A)  ferritic 
B)  austenitic 
C)  martensitic 
D)  precipitation hardening

Question 13

In the AISI system, the letter ____ indicates basic open-hearth or electric furnace steel and basic oxygen furnace steel.

Accepted Answer

A)  C 
B)  E 
C)  F 
D)  O 
A)  C 
B)  E 
C)  F 
D)  O

Question 14

Which of the following is a stainless steel alloy group?

Accepted Answer

A)  Chromium alloy 
B)  Nickel chromium 
C)  Manganese alloy 
D)  Ferritic 
A)  Chromium alloy 
B)  Nickel chromium 
C)  Manganese alloy 
D)  Ferritic

Question 15

The weight of magnesium is ____ that of steel, and ____ that of aluminum.

Accepted Answer

A)  1/4, 1/2 
B)  1/4, 2/3 
C)  1/3, 2/3 
D)  1/2, 2/3 
A)  1/4, 1/2 
B)  1/4, 2/3 
C)  1/3, 2/3 
D)  1/2, 2/3

Question 16

How can cracks in martensite be prevented?

Accepted Answer

Martensite is very hard and brittle and

Question 17

Pure aluminum melts at ____ Fahrenheit.

Accepted Answer

A)  1200 ° 
B)  1500 ° 
C)  1800 ° 
D)  2200 ° 
A)  1200 ° 
B)  1500 ° 
C)  1800 ° 
D)  2200 °

Question 18

The carbon content of high-manganese steel is ____ %.

Accepted Answer

A)  0.01 to 0.14 
B)  0.30 to 0.50 
C)  0.50 to 0.90 
D)  1 to 1.4 
A)  0.01 to 0.14 
B)  0.30 to 0.50 
C)  0.50 to 0.90 
D)  1 to 1.4

Question 19

____________________ steel has a carbon content of 0.8% to 1.5%, making it very difficult to weld.

Accepted Answer

The answer of ____________________ steel has a carbon content of...

Question 20

What is the major purpose of pre- and post-heating cast iron for welding?

Accepted Answer

A)  To allow the weld to fuse deeper into the joint 
B)  To control the rate of temperature change 
C)  To reduce the carbon content in the casting around the weld, which makes it less brittle 
D)  It helps the weld metal flow more evenly into the crack 
A)  To allow the weld to fuse deeper into the joint 
B)  To control the rate of temperature change 
C)  To reduce the carbon content in the casting around the weld, which makes it less brittle 
D)  It helps the weld metal flow more evenly into the crack

Exam 27: Weldability of Metals

Which of the following is not a common defect if the wrong filler metal is selected for a weld?

Low-carbon steel has a carbon content of less than ____ %.

What type of flux is required to gas weld cast iron?

If the chromium-nickel content of a stainless steel is referred to as 25-12, then it contains ____.

____________________ steels are used because of increasing demand for high strength and less weight.

Describe the two recommended procedures to be observed for arc welding tool steel.

Explain why a part must be cleaned before repair or maintenance welding can be performed.

Summarize the uses of chromium-molybdenum steel, including applications it is used for, processes used to weld it, and its tensile strength.

Which type of cast iron is the most widely used?

When welding tool steel using the gas welding method, the rods selected for welding repairs should have ____.

The term ____________________ describes the ease with which a metal can be welded properly.

The strength of ____ stainless steels is the result of a special heat treatment.

In the AISI system, the letter ____ indicates basic open-hearth or electric furnace steel and basic oxygen furnace steel.

Which of the following is a stainless steel alloy group?

The weight of magnesium is ____ that of steel, and ____ that of aluminum.

How can cracks in martensite be prevented?

Pure aluminum melts at ____ Fahrenheit.

The carbon content of high-manganese steel is ____ %.

____________________ steel has a carbon content of 0.8% to 1.5%, making it very difficult to weld.

What is the major purpose of pre- and post-heating cast iron for welding?

Introduction to Welding

Safety in Welding

Shielded Metal Arc Equipment, Setup, and Operation

Shielded Metal Arc Welding of Plate

Shielded Metal Arc Welding of Pipe

Shielded Metal Arc Welding Aws Sense Certification

Flame Cutting Equipment, Setup, and Operation

Plasma Arc Cutting Equipment, Setup, and Operation

Related Cutting Processes

Gas Metal Arc Welding Equipment, Setup, and Operation

Gas Metal Arc Welding

Flux Cored Arc Welding Equipment, Setup, and Operation

Flux Cored Arc Welding

Gas Metal Arc and Flux Cored Arc Welding of Pipe

Gas Metal Arc and Flux Cored Arc Welding Aws Sense Certification

Gas Tungsten Arc Welding Equipment, Setup, and Operation

Gas Tungsten Arc Welding of Plate

Gas Tungsten Arc Welding of Pipe

Gas Tungsten Arc Welding Plate and Pipe Aws Sense Certification

Shop Math and Weld Cost

Reading Technical Drawings

Welding Joint Design and Welding Symbols

Fabricating Techniques and Practices

Welding Codes and Standards

Testing and Inspection

Welding Metallurgy

Filler Metal Selection

Welding Automation and Robotics

Other Welding Processes

Oxyfuel Welding Equipment, Setup, and Operation

Oxyacetylene Welding and Brazing, Braze Welding, and Soldering

Filters

The weight of magnesium is that of steel, and that of aluminum.