OMEGA OB-500 POWDER Air Set High Temperature Cements (Casting, Coating, Dipping, 8 oz)

Color: Off white

Volume: 8 oz

Features: Withstands short-tem immersion in molten metal; used as a coating on expendable thermocouple tubes

Applications: Casting, Coating, Dipping

Density, Max: Wet : 112 b/ft³ Dry : 82 b/ft³

Working Life: OMEGABOND 500® has a pot life of 1-hr after the powder and binder are mixed together; OB-500 reaches an initial air set after 4-hr at room temperature; a final set is only reached after oven baking at 55°C (130°F) for 4-hr; if the cement is to be used at temperatures above 100°C (212°F), OB-500 must under go an extended cure at 105°C (220°F) or above for 12 hours

Mix Ratio By Weight: 2-part cement: just mix powder and binder; mix ratio for cast applications ranges from 1.87 to 2.0 parts powder to 1-part liquid binder by weight

Modulus Of Elasticity: 3.6 x 10⁵ psi

Dielectric Strength Note: Dielectric Strength at 20°C:12.5 to 51.0 V/mil;Dielectric Strength at 400°C: ≤15 V/mil;Dielectric Strength at 795°C: ≤1.3 V/mil

Operating Temperature, Max: 1205 °C

Material Construction Option: Coating Cement, Powder Part

Thermal Expansion Coefficient: 10.93 x 10^-6 in/in/°F

Mechanical Strength Properties: Tensile Shear Strength: 1500 psi; Flexible Strength: 2000 psi; Compressive Strength: 1500 psi