ESS-TOOL™ 350 is a new, high-temperature epoxy syntactic tooling board for the aerospace, automotive and marine sectors. Designed for use at temperatures up to 350°F (176°C), ESS-TOOL 350 has an extremely low coefficient of thermal expansion to produce models, tools and parts with accuracy and dimensional stability.

Color: light grey

Standard dimensions: 24″ x 60″

Thickness: 1″ / 2 / 3 / 4 / 5 / 6 (25mm / 51 / 76 / 102 / 127 / 152)

Custom cutting services available

Mechanical & Thermal Properties
PropertyValueUnits (IMP)ValueUnits (SI)ASTM Method
Density46.0lbs/ft3736kg/m3
Shore Hardness85D85DD2240
Uniaxial Compressive Strength (max)17,100psi117.8MPaD695
Unaxial Compressive Modulus480psi3,310MPaD695
Tensile StrengthTBDpsiTBDMPaD638
Tensile ModulusTBDksiTBDMPaD638
Flexural Strength6,787psi46.8MPaD790
Flexural Modulus588ksi4,054MPaD790
Flexural Toughness4.46psi30.7KPaD790
Shear StrengthTBDpsiTBDMPaD732
Coefficient of Thermal Expansion (RT – 350F)14.0 x 10^-6in/in/F25.2 x 10^-6m/m/CE228
Thermal Conductivity1.15BTU in/hr ft2 F0.165W/m-K
Heat Deflection Temperature (264 psi)>460F>238CD648