Easy
Easier
So easy
Easiest
Kindergarten
100
What is AISI?
American Iron and Steel Institute
Pg 9
100
What is the chemical composition of cementite?
Fe3C
Pg 26
100
What temperature range is called the "blue brittle range"?
150-370°C (300-700°F)
Pg 82
100
What is recrystallization?
When grains reform into smaller grains that are all about the same size
Pg 54
100
What is the issue with large grains?
They have low toughness
Pg 58
200
What is 1020 steel?
Carbon steel with 0.20% carbon
Pg 11
200
Which microstructure of iron is not a phase?
Pearlite
Pg 24
200
Flakes dissolve more readily than ______
Round nodules
Pg 38
200
The higher the carbon content of the steel, the more distorted the ______
Crystal structure
Pg 27
200
Lathe tools have a typical carbon content of how much?
1.0-1.2%
Pg 42
300
You can use chill blocks to _______
Increase the cooling rate of the weld
Pg 53
300
What is the temp at which the Eutectic point is reached?
1147°C (2097°F)
Pg 24
300
When does anaerobic corrosion occur?
When stainless steel sheets are stacked tightly together outdoors
Pg 65
300
The four basic types of stainless steels are determined by what?
The dominant structure formed
Pg 51
300
What happens to alumina in a rotary kiln?
It is calcined at 1100°C (2012°F)
Pg 66
400
What is the symbol for austenite and the austenite phase?
Pg 26
400
When the cooling rate is slow, the grains in the weld are ______
Irregular
Pg 34
400
What is the "sigma phase"?
The intermolecular stage that causes metals to lose ductility, toughness, stability, and corrosion resistance in ferritic and austenitic steels
Pg 61
400
What grades of stainless steels are considered 'stabilized'?
Types 321 and 347
Pg 55
400
Why do aluminum casting ingots lose magnesium during remelting?
Preferential oxidation?
Pg 76
500
What does Hx4 designate?
1/2 hard
Pg 74
500
What is the maximum % of phosphorus allowed in austenitic stainless steels?
0.03%
Pg 57
500
What two elements are considered "grain refining"?
Aluminum and vanadium
Pg 49
500
What is the US customary unit for thermal conductivity?
Btu/h - ft - °F
Pg 46
500
What is the multiplying factor for hardenability at 1% weight of Chromium?
About 3.0
Pg 47