MightyLoc 9025 is a two-component methyl methacrylate (MMA) adhesive that bonds strongly to most metals and can replace tack or spot welding for stiffeners on metal panels. It reaches a lap shear strength of 86 kg/cm2 (8.5 N/mm2, ASTM D1002) fully cured and also bonds fibreglass and composites.
PRODUCTS · METHACRYLATE
MightyLoc 9025 structural methacrylate adhesive
Two-part methacrylate that replaces spot welding for metal, with lap shear of 86 kg/cm2.
Chemistry: Methacrylate
Industries: Bus & Truck, Construction, Marine & Shipbuilding, Metal Fabrication, Signage
MethacrylateMetalCompositesRoHS compliant (per product TDS)
Service temp
-40 to 100 °C continuous, 150 °C intermittent
Cure speed
Approx. 15 mins (set to touch)
Headline properties for MightyLoc 9025. Refer to the current TDS for full specification.
Specifications last reviewed
Specifications
| SKU | 9025 |
|---|---|
| Chemistry | Methyl Methacrylate (MMA), two-component |
| Appearance | Part A green / Part B red |
| Specific gravity | 1.16-1.18 |
| Viscosity | 3000-5000 cps at 25°C |
| Fixture time | Approx. 15 mins (set to touch) |
| Full cure | 24 hours |
| Service temperature | -40 to 100 °C continuous, 150 °C intermittent |
| Lap shear strength | 86 kg/cm2 |
| Mix ratio | 1:1 (A:B) by weight & volume |
| Shelf life | 4 months at 25°C |
| Packaging | 200 g, 2 kg & 5 kg sets |
Substrate compatibility
- Metal
- Composite
Video
Technical Data Sheet
Download the current Technical Data Sheet for full specification, handling, and cure data. The complete TDS library cross-references every MightyLoc family by chemistry, substrate, and service window.
Compliance
- RoHS compliant (per product TDS)
RoHS statements and Safety Data Sheets for this product are available on request. Contact the MightyLoc team and we will send the current documents.
Signage · 2 points
01 / 02
Letter returns
Abrade and wipe the mating edges, mix the two parts, and apply a bead along the return. Press the aluminium return to the face and clamp lightly while it fixtures, for a flush letter with no visible fixings.
02 / 02
Backer panel
Apply the mixed adhesive to the back of each letter, position the cluster on the steel or aluminium backer, and hold it square until set. The structural metal bond carries the weight with no visible fixings.
Tap a point on the image to see where and how to apply.
Marine · 2 points
01 / 02
Metal fittings
Bond metal fittings, brackets and hardware to steel or aluminium structures where riveting or tack welding would be intrusive.
02 / 02
Deck fittings
Bond non-structural metal deck fittings and brackets to steel or aluminium; guardrail stanchions and other safety-critical deck fittings follow the vessel's class rules, so ask MightyLoc first.
Tap a point on the image to see where and how to apply.
Bus & truck · 2 points
01 / 02
Roof panel seam
Apply the mixed adhesive in a continuous bead along the roof seam, then set the metal cap onto the steel body. The bond spreads load across the full join and bonds cold, so there is no heat distortion.
02 / 02
Lower fascia
Bond steel or aluminium stiffeners to metal lower fascia panels with a single continuous bead, replacing rivets and tack welds along the run.
Tap a point on the image to see where and how to apply.
Application guidance last reviewed
Technical tools: Cure-time guide Service-temperature guide Substrate-pair selector
Frequently asked questions
MightyLoc 9025 is a two-component methyl methacrylate (MMA) adhesive formulated for metal bonding, replacing mechanical fastening such as riveting and tack welding. It mixes 1:1 (Part A green resin, Part B red), bonds mild steel, stainless steel, galvanized metal, aluminium and magnets, and reaches a cured shear strength of 86 kg/cm2.
MightyLoc 9025 reaches a cured shear strength of 86 kg/cm2 on metal substrates, with high tensile and shear strength along with excellent impact, vibration and temperature resistance. This makes it a practical replacement for riveting and tack welding on metal joints such as stiffener-to-panel assemblies. Strength is PSB tested to ASTM D1002.
MightyLoc 9025 is rated for continuous service from -40 C to +100 C and intermittent service up to +150 C, as published in the MightyLoc 9025 brochure. A powder-coating bake usually runs above 150 C, so bond after coating, or confirm the limit for your assembly with the MightyLoc team.
MightyLoc 9025 reaches full cure in 24 hours at 25 C. Mix equal parts, join and clamp within 3 minutes of mixing at 25 C, and keep the parts clamped and undisturbed until the adhesive has set.
MightyLoc 9025 mixes 1:1, equal parts of Part A (green) and Part B (red) by both weight and volume. Apply an equal amount of each part directly to the bonding area, mix them evenly until homogeneous, then clamp the parts in position immediately. An uneven mix ratio may interfere with proper curing, so keep the 1:1 ratio consistent.
All surfaces to be bonded with MightyLoc 9025 must be abraded and cleaned thoroughly before bonding. Wipe them with isopropyl alcohol (IPA) or acetone, and make sure they are free of dust, dirt and grease. Do not use oil-based cleaners such as turpentine or paint thinners, as they interfere with adhesion.
Both parts of MightyLoc 9025 have a viscosity of 3000 to 5000 cps at 25 C, with a specific gravity of 1.16 to 1.18. Part A is green and Part B is red, and the two are mixed at a 1:1 ratio by weight and volume.
MightyLoc 9025 is formulated for a wide variety of metal bonding, including mild steel, stainless steel, galvanized metal, aluminium and magnets. Typical applications are stiffeners for elevators, cladding and facade panels, ferrite cores for transformers, magnets for speaker production, and other metal fixtures that require long-term durability.
Store unopened at 25 C or below and use within 4 months. Store it in a cool, dry place at 15 to 25 C, away from direct sunlight and open flame. Do not return unused product to the original container, and transfer only the amount you need for the job.
MightyLoc 9025 is supplied in three set sizes: a 200 gm set (100 gm Part A plus 100 gm Part B), a 2 kg set (1 kg plus 1 kg), and a 5 kg set (2.5 kg plus 2.5 kg). Each set pairs the green Part A with the red Part B at the 1:1 mix ratio. Contact the MightyLoc team to confirm current availability for your volume.