Page 485 - IS-Rayfast Catalogue - Issue 9, 2017

Adhesives and Tapes
High Temperature Epoxies
Maximum Operating Temp. up to 340ºC
Properties and Part Selection

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Selection Table - Epoxy-Based Adhesive Properties (Continued)
Features Thermal Cure Machinable Single
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Product Ref 4460 4700 4703 4540 454B 4420

High temp. Ultra Liquid
High Non-sag One 3
Properties temp. low adhesive temp, metal, putty, component
and tooling casting
viscosity adhesive structural
casting repairs and repairs
4
Maximum Temp. ºC 315 315 340 260 230 230
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Components Colour Amber Black Black Silver Silver Grey
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Viscosity cps 600 40,000 50,000 30,000 100,000 Paste
Density gm/cc 1.1 1.8 1.8 1.9 1.9 1.2 7

Hardness Shore ‘D’ 90 94 95 80 80 75
8
Tensile Strength psi 10,300 11,100 11,800 10,000 10,000 7,000
Thermal Conductivity 0.57 1.9 2.6 5.0 5.0 1.2 9
(W/mºC)
Thermal Expansion
(x 10-5 / ºC) 6.4 6.4 6.8 8.0 8.0 4.5 10
Dielectric Strength volt/mil 19.5 21.45 17.55 3.9 3.9 15.6
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Volume Resistivity ohm-cm 10 14 10 14 10 10 10 8 10 10 10 10
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Heat Distortion ºC 260 300 320 225 200 175

Elongation % 5.0 2.0 2.0 1.2 1.2 1.5 13
Thermal Stability %
(1000hr @ 200ºC) 0.1 0.1 0.02 0.5 0.5 0.6
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Shrinkage % max 0.5 0.2 0.1 0.1 0.2 0.3
Moisture Absorption 15
% 30 Days 0.1 0.02 0.15 0.2 0.2 0.5
Mix Ratio (by weight) 100:80 100:28 100:22 100:9 100:11 N/A 16
Working Time N/A N/A N/A 30 30 N/A
25 gms (mins. @ 24ºC)
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Cure (hrs. @ 24ºC) N/A N/A N/A 16 - 24 16 - 24 N/A
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Cure (mins. @ 120ºC) 4 hours 4 hours 4 - 6 hours 8 10 30

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