6.1 Flashcards
(28 cards)
Magnetite iron has what % of iron
72%
Hematite iron has what % or iron
70%
Properties of ferrite steel
- 0.006% Carbon
- Soft and ductile
- similar to pure iron
Property’s of Cementite
- 6.67% Carbon
- Hard & brittle
Pearlite steel Properties
Combines ferrite & cemetite
Properties of Cast Iron
- Hard and brittle
- Iron is cooled rapidly by quenching
Low Carbon steel content
Up to 0.3% Carbon
Medium Carbon Steel content
0.3% -> 0.8%
High Carbon Steel Content
0.8->1.7%
Plain Carbon Content
0.0 -> 1.7%
Nicole + iron properties
Increase Strength & toughness
Improves corrosion resistance
Chromium + Iron Properties
Improved hardness & strength
More grain growth
Improved corrosion resistance
Stainless Steel alloy percentages
( chrome / nickel )
18% chrome 8% nickel
A286 Alloy (Super Alloy) consists of:
57% iron
25% Nickel
14.5% Chromium
2% Titanium
0.3% Vanadium
0.04% Carbon
Properties of A286 Alloy ( Super Alloy )
- High strength
- High corrosion Resistance
- Good Heat resistance @ high temp
What steel is commonly used in aircraft
SAE 2330
In Steel Marking what do each of the four digits stand for
- Eg SAE 2330
1st Digit = Alloy element
2nd Digit = % of alloy
3rd & 4th = % in hundreds of Carbon
Low Carbon steel Properties
Strong
Rusts easily
Medium Carbon Steel properties
Harder then low Carbon steel
High Carbon steel properties
Brittle
Harder than medium
HHS properties
Very hard
Longer lasting than high Carbon steel
Keeps hardness up to 700 degrees
What is Eutectiod
The temperature point (723*C ) when all pearlite and ferrite become ausenite
What is cold working
Hammering, bending, rolling, Etc
What is annealing
Slowly and uniformly heating and cooling below the critical limit to relief stress
