MOLYKOTE CU-7439
Harmonization Code : 3403.19 | Lubricating Preparations (With 70% or More Petroleum Oils) For Automotive and Other Uses
Main features
- Up to 650 deg C Service
- High-Adhesion Copper Paste
- Nondestructive Thread-Disassembly Support
Product Description
MOLYKOTE® Cu-7439 Plus Paste V1 is a high-performance copper paste formulated with a partly synthetic oil, powdered copper, and specialized inhibitors. Engineered for components subjected to high temperatures, high pressures, and corrosive influences, this highly adhesive paste offers excellent resistance against water washout and steam. It ensures the trouble-free, nondestructive disassembly of machine components, threaded connections, and flange seals even after prolonged service intervals in harsh environments like steel works and refineries.
Key features
- Extreme temperature stability: Features a very wide service-temperature range of -30°C to 650°C (-22°F to 1,202°F) and exhibits no drop point, meaning it will not melt or run at elevated temperatures.
- High load-carrying capacity: Protects components under extreme pressure, providing an Almen-Wieland OK load of >20,000 N and a four-ball weld load of 3,200 N.
- Excellent environmental resistance: Highly adhesive formulation provides very good corrosion protection and resists water washout. Contains no intentional polytetrafluoroethylene (PTFE) or per- and polyfluoroalkyl substances (PFAS).
Applications / Suitable for
- Components requiring protection against water, steam, and corrosion, such as brake mechanisms and flange seals
- Exhauster bolts and threaded connections exposed to high temperatures
- Equipment in steel works, glass manufacturing, petrochemical facilities, and on agricultural and marine vehicles
TDS, SDS & Technical Documents
Technical Specifications
No specifications available.
Additional Information
As-supplied / before-processing properties
Typical properties; these values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Chemical Composition | Powdered copper, partly synthetic oil, inhibitor | - | Contains solvent dewaxed residual oil |
| Physical State / Appearance | Copper-colored / Bronze | - | Paste |
| Unworked Penetration | 320-370 | mm/10 | ISO 2137 |
| Density | 0.99 - 1.0 | g/ml | at 20°C (68°F) (DIN 53 217). Relative density varies between TDS and SDS |
| Flash Point | > 200 | °C | Tag closed cup (392 °F) |
| Usable Life (Paste) | 60 | months | Stored at 0-40°C in unopened containers |
| Usable Life (Aerosol Spray) | 24 | months | Stored between 5°C and 35°C in unopened containers |
After-processing / in-service properties
Typical properties; these values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Service Temperature Range | -30 to +650 | °C | (-22 to +1,202 °F) Based on temperature resistance of solid lubricants |
| Drop Point | None | - | ISO 2176 |
| Four-Ball Tester Weld Load | 3,200 | N | DIN 51 350 pt.4 |
| Four-Ball Tester Wear Factor | 1.0 | mm | Under 800 N load (DIN 51 350 pt.5) |
| Almen-Wieland OK Load | > 20,000 | N | - |
| Coefficient of Friction (Thread) | 0.13 | - | Screw test (M12, 8.8, blackened surface) |
| Coefficient of Friction (Head) | 0.12 | - | Screw test (M12, 8.8, blackened surface) |
| Initial Break-Away Torque | 110 | Nm | M12, starting torque 80 Nm, heat treatment at 300°C for 21h (bolt material C45, 8.8) |
| Water Resistance (Static) | 0 | - | at 90°C (DIN 51 807 pt.1) |
| Corrosion Protection | 0 | - | SKF-Emcor method, degree of corrosion (DIN 52 802) |
