Datasheet

TDS LOCTITE
®
542, May-2004
TYPICAL PROPERTIES OF CURED MATERIAL
Physical Properties:
Coefficient of Thermal Expansion, ASTM D 696, K
-1
80×10
-6
Coefficient of Thermal Conductivity, ASTM C 177,
W/(m·K)
0.10
Specific Heat, kJ/(kg·K) 0.30
TYPICAL PERFORMANCE OF CURED MATERIAL
Adhesive Properties
After 24 hours @ 22 °C
Breakaway Torque, ISO 10964:
M10 steel nuts and bolts N·m 15
(lb.in.) (130)
Prevail Torque, ISO 10964:
M10 steel nuts and bolts N·m 9
(lb.in.) (80)
Breakloose Torque, ISO 10964, Pre-torqued to 5 N·m:
M10 steel nuts and bolts N·m 25
(lb.in.) (220)
Max. Prevail Torque, ISO 10964, Pre-torqued to 5 N·m:
M10 steel nuts and bolts N·m 25
(lb.in.) (220)
Compressive Shear Strength, ISO 10123:
Steel pins and collars N/mm² ≥6.50
LMS
(psi) (940)
TYPICAL ENVIRONMENTAL RESISTANCE
Cured for 1 week @ 22 °C
Breakloose Torque, ISO 10964, Pre-torqued to 5 N·m:
M10 zinc phosphate steel nuts and bolts
Hot Strength
Tested at temperature
% RT Strength
Temperature, °C
100
75
50
25
0
0 50 100 150
Heat Aging
Aged at temperature indicated and tested at 22°C
% Initial Strength at RT
Hours
100
75
50
25
0
0 1000 2000 3000 4000 5000
120°C
150°C
Chemical/Solvent Resistance
Aged under conditions indicated and tested at 22°C.
% of initial strength
Environment °C 100 hr 500 hr 1000 hr
Motor Oil 125 100 100 100
Unleaded Petrol 22 100 100 95
Brake fluid 22 100 100 95
Water Glycol 50/50 87 90 90 90
Ethanol 22 100 100 95
Acetone 22 100 80 80
GENERAL INFORMATION
This product is not recommended for use in pure oxygen
and/or oxygen rich systems and should not be selected as
a sealant for chlorine or other strong oxidizing materials.
For safe handling information on this product, consult the
Material Safety Data Sheet (MSDS).
Where aqueous washing systems are used to clean the
surfaces before bonding, it is important to check for
compatibility of the washing solution with the adhesive. In
some cases these aqueous washes can affect the cure and
performance of the adhesive.
This product is not normally recommended for use on plastics
(particularly thermoplastic materials where stress cracking of
the plastic could result). Users are recommended to confirm
compatibility of the product with such substrates.
Directions for use
For Assembly
1. For best results, clean all surfaces (external and internal)
with a Loctite cleaning solvent and allow to dry.
2. If the material is an inactive metal or the cure speed is to
slow, spray all threads with Activator 7471 or
7649 and allow to dry.
3. Apply a 360° bead of product to the leading threads of the
male fitting, leaving the first thread free. Force the
material into the threads to thouroughly fill the voids. For
bigger threads and voids, adjust product amount
accordingly and apply a 360° bead of product on the
female threads also.
4. Using accepted trade practices, assemble and wrench
tighten fittings until proper alignment is obtained.
5. Properly tightened fittings will seal instantly to moderate
pressures. For maximum pressure resistance and solvent
Henkel Loctite Americas
+860.571.5100
Henkel Loctite Europe
+49.89.9268.0
Henkel Loctite Asia Pacific
+81.45.758.1810
For the most direct access to local sales and technical support visit: www.loctite.com