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Silicone adhesive on Aluminum

7 verified lap-shear rows from manufacturer datasheets. Values stay with the surface preparation printed on the sheet.

ProductPrepStrengthStandardSource
LOCTITE SI 5366

Lap Shear Strength, ISO 4587: Aluminum (1 mm sand-blasted thick bondline) N/mm² 2 (psi) (290)

grit blasted2 MPaISO 4587TDS p.1
LOCTITE SI 5615

Lap Shear Strength, ISO 4587: Aluminum (Alclad) N/mm² 1.8 (psi) (260)

not stated1.8 MPaISO 4587TDS p.1
LOCTITE SI 5972 FC

Casted aluminum (plasma treated) N/mm2 ≥1.4; 100%CF (psi) (≥200)

not stated> 1.4 MPaISO 4587TDS p.2
LOCTITE SI 5600

Lap Shear Strength, 0 gap: Aluminum (Alclad) N/mm² ≥1.0LMS (psi) (≥145)

not stated> 1 MPaISO 4587TDS p.2
LOCTITE SI 5606

Lap Shear Strength, ISO 4587: Aluminum (Alclad) 1.0 mm gap N/mm² ≥1.0LMS (psi) (≥145)

not stated> 1 MPaISO 4587TDS p.2
LOCTITE SI 5607

Cured for 24 hours @ 22 °C / 50% RH … Lap Shear Strength, ISO 4587: … Aluminum (Alclad) N/mm² ≥1.0LMS

not stated> 1 MPaISO 4587TDS p.2
LOCTITE SI 5421

Lap Shear Strength, ISO 4587: Alclad to Alclad N/mm² ≥0.4LMS

not stated> 0.4 MPaISO 4587TDS p.1

Aluminum material page