MP35N® strip and foil (UNS R30035) is a nonmagnetic nickel-cobalt-chromium molybdenum alloy that has excellent corrosion resistance. It can obtain ultra-high tensile strengths (300 ksi) through work hardening and aging and has good toughness and ductility.
What are the applications for MP35N® Strip?
Applications for MP35N® strip and foil include
orthodontic brackets, electrical components,
spring contacts, medical instruments such as
stents,
implant electronic connectors, chemical, food processing and marine environments.
How Does Work Hardening Enhance the Ultra‑High Strength of MP35N® Strip?
After work hardening, MP35N® strip alloy can be aged in the temperature range of 800/1200°F for increased strength. MP35N® will only respond to aging if in the work hardened condition. Service temperatures up to 750°F are recommended for work hardened material.
MP35N® strip can be successfully TIG welded and can be produced by double vacuum melting, and as such, has a low nonmetallic inclusion level.
What Sizes Are Available for MP35N® Strip and Foil?
MP35N® strip is available from Hamilton Precision Metals as strip product in thicknesses from 0.0005” to 0.030” (0.0127 mm to 0.762 mm) and widths to 5.0” (127 mm).
An MP35N® foil product is available in thicknesses down to 0.0001” (0.00254 mm) and widths of 4.0” (101.6 mm). The material corresponds to UNS R30035.
What Is the Nominal Composition of MP35N® Strip?
| MP35N® - LTi NOMINAL COMPOSITION |
| Nickel |
35%
|
| Cobalt |
33.5%
|
| Chromium |
20.5%
|
| Molybdenum |
9.5%
|
| Titanium |
0.01%
|
| Iron |
0.5%
|
| Carbon |
0.01%
|
| Boron |
0.01%
|
What Mechanical Properties Characterize MP35N® Strip?
| MP35N® - LTi MECHANICAL PROPERTIES |
|
ANNEALED |
COLD ROLLED |
COLD ROLLED &
HEAT TREATED |
| Ultimate Tensile Strength |
135,000 PSI |
275,000 PSI |
300,000 PSI |
| Yield Strength (0.2% Offset) |
57,000 PSI |
240,000 PSI |
290,000 PSI |
| Elongation in 2” * |
40%
|
1%
|
1% |
| Rockwell Hardness |
RB 94
|
RC 50 |
RC 55 |
| Modulus of Elasticity |
33.76 ksi x 103
|
- |
- |
What Physical Properties Characterize MP35N® Strip?
| MP35N® - LTi PHYSICAL PROPERTIES |
| Density |
0.304 lbs./cu.in. |
| Melting Point (Approx.) |
2400°F |
| Electrical Resistivity @ R.T. |
103 Microhm·cm |
|
Thermal Expansion Coeffiecient (RT to 200°C)
|
13.7 ppm/°C
|
| Thermal Conductivity @ R.T. |
11.2 W/m·K
|
| Magnetic Permeability @ R.T |
1.0009 |
MP35N®-LTi is a registered trademark of SPS Technologies Inc.