Glossary of Non-Ferrous Metals
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- Non-Ferrous metals?
- They dont have Iron as the base metal.Aluminum,Titanium, and magnesium
- Alluminum is susceptible to?
- Now modern alloys are controlled by?
- alloying or cladding
- Copper (Cu)
- alloy heat-treatable
poor corrosion resistance
- Silicon (Si)
- decreases melting point
- Manganese (Mn)
- Prime alloy agent for Non-heat treatable alloys
strenght & good workability
- Magnesium (Mg)
- good weldability & Corrosion Resistance
5056 alloy most pop.used for rivets.
- Zinc (Zn)
- coupled with mag= heat treatable alloy
- Chromium (Cr)
- Increases Hardness
- What are the Types of codes for Alloy-indentification?
- 1000,2000,3000,-7000 series are good in aviation.
- alloy ident. when it comes to 2000-8000 series what do the agents mean?
- 1st digit=major alloy agent
- 1000 series?
- commercially pure aluminum
high corrosion resistance,thermal and electrical prop.
- 3003 is 1100
- low strenght
non structural app.
- 5052(MG &CU)
- used for fuel or oil tanks
rigid fluid lines
- Copper or Zinc?
- 75,000 psi
susceptible to corrosion
most pop. 2024,2117
- 2000-8000 series 2nd, 3rd and 4th digits are?
- 2nd=#of controls or mods.
3rd & 4th= specific alloying agents.
- Annealing does what to metal in a heat-treating process?
- softens it
"dwell" or "soak" to get temp equal.
cool to 500F= 50F p/hr
Cool to room temp =any rate
- annealed state is best for?
- cold working= may be repeated many times over to form.
- Solution Heat-Treating?
- Hardening process
- process for solution heat-treating is?
- -soak until temp is same throughout material
-Quench to rapidly cool, use water right out of furnace or it
could cause corrosion
- "Age hardening" or "Aging" means?
- soft immediatly after quenching but strenght increases over time.
full strenght=4-5 days
- Solution heat-treating you Can slow natural aging by?
- storing in temp. 32oF or<
- What is Precipitation Heat-Treating? A.K.A?
- Heat treat process 2nd time to increase strenght
Heat to low temp
cool in still air
- If soaked too long when PHT could cause?
- "Overage" and decrease strenght
- What main "T" Numbers are used in aviation?
- T6=Solution Heat-treat,artifical aging
T7= Solution Heat-Treat, stabilized to control growth and distortion
T8=Solution Heat-Treat, strain hardened, artifially aged.
- Strain Hardening does what to the material?
- increase strenght & Hardness by coldworking
non-heat treat.= rolling
heat treatable=rolled after solution heat treat.
- Temper Designations?
4= quarter hard
6= half hard
- Magnesium (Mg) & its alloys has the best_____ ratio?
- Best strenght-weight ratio when alloyed with Zn,Al,&MN
- Mag and its alloys are used on what of aircraft?
- doors, flaps, skins, tanks,wingtips etc.
- How do you extinguish Magesium & its alloys?
- VERY FLAMMABLE
Dry sand or Dry Powder
- Titanium & its alloys are good for?
- High Temperatures
strenght and corrosion resis.
- Titanium/alloys are used for what in aviaton?
- skins, engine firewalls,turbine engine parts & air ducts.
- How do you identify Tit/alloys?
- sim. to stainless steel
mositening & making a mark on glass(pencil)
- strenght of Tit/alloys?
non susceptible to corrosion
- What are the 3 types of alloys for Titanium? and how is there strenght?
- ALPHA=medium strenght, good temp strenght
ALPHA-BETA=versatile, med. strenght when annealed HIGH STRENGHT- heat treated.
BETA=Med. strenght, good forming
- Nickel& alloys?
- Good weldability & Machinability
Heat treated or cold worked
- What are the 3 types of alloys for Nickel? used for what?
- Monel=used in gears, parts and exhaust systems
Inconel=sim. to stainless steel, used for turbine parts, good strenght/corrosion
- 3 types of Copper & its alloys? what are its uses?
spring washers,tube fittings
bushings & bearings
Beryllium Copper=Most used get up to 200,000 psi strenght, same as brass
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