Description
LOCTITE® 3478™ Superior Metal is a two-component epoxy repair compound filled with ferrosilicon for the rebuilding and protection of worn metal surfaces.
- Pack size: 453 g kit A+B (Loctite no. 2041672)
Applications
- Rebuilding worn fits, housings, shafts, and bearing locations
- Filling pitting and surface damage
- Restoring dimensional accuracy of metal components
Features
- Ferrosilicon-filled – excellent resistance to wear, corrosion, and chemicals
- Durable up to -29 °C to +121 °C in dry conditions
- Paste-like consistency for easy application on vertical surfaces
- Strong adhesion to properly prepared metal surfaces
- Minimizes downtime through fast cure and reliable strength
Technical Data
| Product Properties | |
|---|---|
| Chemical Base | Epoxy resin (filled with ferrosilicon) |
| Components | 2-part – Resin (A) + Hardener (B) |
| Color (A / B / mixed) | Metallic grey / White / Dark grey |
| Mix Ratio (volume / weight) | 4:1 / 7.25:1 |
| Viscosity (A / B) | 1,200,000-2,100,000 / 1,800,000-3,000,000 mPa·s |
| Density (A / B) | 2.50-2.71 / 1.42-1.48 g/cm³ |
| Work Life at 25 °C | 20 minutes |
| Functional Cure at 25 °C | 6 hours |
| Full Cure at 25 °C | 24 hours |
| Coverage | 232 cm² at 6 mm thickness (per 453 g kit) |
| Mechanical Properties (Cured) | |
| Compressive Strength (ISO 604) | 125 N/mm² (18,000 psi) |
| Tensile Strength (ISO 527-2) | 38 N/mm² (5,500 psi) |
| Shear Strength, steel blasted (ISO 4587) | 17 N/mm² (2,500 psi) |
| Shore Hardness D (ISO 868) | 90 |
| Temperature Resistance | -29 °C to +121 °C (dry) |
Instructions for Use
- Clean and sandblast or abrade surfaces for best results
- Mix resin and hardener in a 4:1 ratio by volume until uniform color is achieved
- Apply to prepared area and allow to cure undisturbed
Storage
- Store dry at 8-21 °C
- Do not store below 8 °C or above 28 °C
- Do not return unused material to original container
LOCTITE 3478, epoxy repair compound, ferrosilicon, metal rebuilding, machinery maintenance
Hazard Information (CLP)
Signal word: Warning
Hazard Statements (H-phrases)
- H315: Causes skin irritation.
- H317: May cause an allergic skin reaction.
- H319: Causes serious eye irritation.
- H411: Toxic to aquatic life with long lasting effects.
Precautionary Statements (P-phrases)
Prevention:
- P273: Avoid release to the environment.
- P280: Wear protective gloves.
Response:
- P302+P352: IF ON SKIN: Wash with plenty of water and soap.
- P333+P313: If skin irritation or rash occurs: Get medical advice/attention.
- P337+P313: If eye irritation persists: Get medical advice/attention.
Hazardous materials. The forwarding charges may be raised, if shipping to: DE, AT, NL, GB, CH, CZ, IT, ES, FI, NO, BE, IE, RO, PL, FR, PT, LU, DK, LI, GR, SE, SK, BG, SI, CA, LT, EE, LV, HR, SA,
Henkel AG & Co. KGaA, Henkelstr. 67, 40589 Düsseldorf, GERMANY, +49 211 7970, [email protected], www.henkel.com







Caroline I. –
Better than anything I’ve tried before.
sebastian88 –
Excellent workmanship. As expected, top-notch.
Sophie O. –
Better than anything I’ve tried before.
marvin88 –
Arrived without any defect. Arrived on time. Simple and convenient.
Giulio M. –
Very practical and easy to use. Product as expected. Exactly as described. Solid product, would buy again.
Giovanni N. –
Great item. Fast delivery and exactly as described. Recommended.
chris_77 –
Everything in order. Works just as advertised. Received in perfect condition.
Leonardo L. –
Easy to assemble. Great value for money. Very satisfied with the purchase. Very good experience.
Pauline –
Packaging slightly damaged, but the product is excellent. I’ve been using it for 2 weeks and I already see results!
thomas_88 –
Simple to install.
ethan_sky –
Everything perfect and fast. Top product, would definitely recommend.