HPM® 80/20 AL is a resistance alloy with a unique composition that provides deep draw capability. It is used as a heating element in electronic applications.
HPM® 80/20 AL has good forming characteristic and canbe deep drawn. It is not suitable for extended exposure to air at the elevated temperatures.
Available Sizes:
HPM® 80/20 AL is available from Hamilton Precision Metals as strip product in thicknesses from 0.0005” to 0.050” (0.0127 mm to 1.27 mm) and width up to 12.0”
(304.8 mm). Foil Product may be supplied to a thickness of 0.0001” (0.00254 mm) in width up to 4.0” (101.6 mm).
| HPM® 80/20 A NOMINAL COMPOSITION |
| Chromium |
19.5%
|
| Silicon |
0.2%
|
| Iron |
0.1%
|
| Nickel |
Balance
|
Mechanical Properties
| HPM® 80/20 AL MECHANICAL PROPERTIES |
|
ANNEALED |
COLD ROLLED |
| Ultimate Tensile Strength |
105,000 PSI |
190,000 PSI
|
| Yield Strength (0.2% Offset) |
50,000 PSI |
185,000 PSI
|
| Elongation in 2” * |
35%
|
1%
|
| Grain Size |
0.010 mm
|
- |
| Modulus of Elasticity (Tension) |
31 X 106
PSI
|
- |
*The measured elongation will be less as thickness decreases to 0.002” and less.
These values may be adjusted by control of process variables – consult HPM for desired values
Physical Properties
| HPM® 80/20 AL PHYSICAL PROPERTIES |
| Density |
0.304 lbs./cu.in. |
| Melting Point (Approx.) |
1400°C |
| Electrical Resistivity @ R.T. |
108 Microhm·cm |
|
Temperature Coefficient of Resistivity (25° to 100°C)
|
100 PPM/°C
|
| TThermal Expansion Coefficient (20° to 100°C) |
13.4 X 10-6/°C
|
| Thermal Conductivity @ 100°C |
15.0 W/m·K
|
| Magnetic Attraction |
None |
Typical values to guide alloy selection but are not a guarantee of minimum or maximum