|
Metallic Materials
|
|
|
Aluminum
|
2024
|
Non-magnetic
Aircraft Grade
1/3 the weight of steel
Heat treat to increse hardness
Good electrical conductivity (30% of copper)
Good heat conductivity (70 BTU/hr/ft2/°F/ft)
Anodizing increases corrosion resistance & is available in many colors
|
|
6061 & 7075
|
Aircraft grade
Heat treat to increase hardness
|
|
1100, 3003, 5052
|
Commercial (common) alloys
Not heat treatable
Gasket material—softer alloys
|
|
|
Beryllium Copper
|
Alloy 25
|
Electrical alloy
Good electrical conductivity (17-22% of copper)
Good heat conductivity (68 BTU/hr/ft2/°F/ft)
Age hardenable (easy to form in annealed state but can be hardened afterward thru
heat treating)
Non-magnetic & corrosion resistant
Extensively used for springs, spring washers & clips
Good plating base
|
|
|
Brass
|
Alloy 260, 70/30, Copper/Zinc
|
Non-magnetic
Good electrical conductivity (26% of copper)
Good heat conductivity (70 BTU/hr/ft2/°F/ft)
Spring temper provides a flatter part and a cleaner cut than half hard or soft tempered
Corrosion resistant
Excellent plating base
|
|
|
Copper
|
Alloy 110, Electrical tough pitch, 99.9% Copper
|
Non-magnetic
Corrosion resistant
Best electrical grade copper
Best electrical conductivity (100% of copper)
Best thermal conductivity (225 BTU/hr/ft2/°F/ft)
Good plating base
Excellent sealing capability
|
|
|
Phos. Bronze
|
Grade A, Spring temper
|
Non-magnetic
Fair corrosion resistant
Fair for electrical applications (15% of copper)
High strength
High temperature resistance
Good bearing surface
Good spring material
|
|
|
Steel
|
Low Carbon, CRS, Commercial Quality
|
0.010 or above #4 temp (¼H)
Below 0.010 #1 temp (FH)
Inexpensive
General Applications
Good plating base material (magnetic & it will corrode)
Fair electrical conductor (12% of copper)
High strength for cost
|
|
|
Stainless Steel
|
300 Series
|
0.010 or above (Annealed)
0.005-0.009 (HH)
.001-.004 (FH)
Slightly magnetic, least magnetic in annealed condition
General applications
Greater strength than steel
Excellent corrosion resistance
|
|
400 Series
|
Steel & Plate vs. Stainless—in many instances, a steel part with the additional
plating process changes are the same
|
|
Spring Steel
High Carbon
|
1075-0.010 & above, 1095-below 0.010
|
May be heat treated to increase hardness
Can be formed easily in annealed state then hardened through heat treating
Used for springs, spring washers & clips
|
|
|
Titanium
|
AMS-4900
|
Commercial pure
Extreme high temperature applications
High strength to weight ratio
Mainly used in aircraft
Quite expensive
Corrosion resistant
|
Printable PDF Version
|