Table 2.

Mechanical properties of structural resin [30,31,32].

Properties *	Grey Pro		Rigid		High Temp
	Green 1	Postcured 2	Green 3	Postcured 4	Green 5	Post-Cured 6	Post-Cured + Thermally Postcured 7
Tensile Properties
Ultimate Tensile Strength	35 MPa	61 MPa	40 MPa	75 MPa	20.9 MPa	58.3 MPa	51.1 MPa
Young’s Modulus	-	-	-	-	-	-	-
Tensile Modulus	1.4 GPa	2.6 GPa	2.2 GPa	4.1 GPa	0.75 GPa	2.75 GPa	2.9 GPa
Elongation	32.5%	13%	13.3%	5.6%	-	-	-
Elongation at Break	-	-	-	-	14%	3.3%	2.4%
Flexural Properties
Flexural Modulus	0.94 GPa	2.2 GPa	1.37 GPa	3.7 GPa	0.69 GPa	2.62 GPa	2.62 GPa
Flexural Stress at 5% Strain	39 MPa	86 MPa	49 MPa	121 MPa	-	-	-
Flexural Strength at Break	-	-	-	-	24.1 MPa	94.5 MPa	93.8 MPa
Impact Properties
Notched IZOD	-	18.7 J/m	-	18.8 J/m	32.8 J/m	18.2 J/m	24.2 J/m
Temperature Properties
Head Deflection Temp. @ 1.8 MPa	-	62.4 °C	-	74 °C	43.6 °C	99.2 °C	101 °C
Heat Deflection Temp. @ 0.45 MPa	-	77.5 °C	-	88 °C	49.3 °C	142 °C	238 °C
Thermal Expansion (−30 to 30 °C)	-	78.5 µm/m/°C	-	53 µm/m/°C	-	-	-
Thermal Expansion (0 to 150 °C)	-	-	-	-	118.1 µm/m/°C	79.6 µm/m/°C	74 µm/m/°C

* Material properties can vary with the part geometry, print orientation, print settings, and temperature. ¹ Data was obtained from green parts, printed using a Form 2, 100 μm, Grey Pro settings, without additional treatments. ² Data was obtained from parts printed using a Form 2, 100 μm, Grey Pro settings, and postcured with Form Cure for 120 min at 80 °C. ³ Data was obtained from green parts, printed using Form 2, 100 μm, rigid settings, without additional treatments. ⁴ Data was obtained from parts printed using a Form 2, 100 μm, rigid settings, and postcured with a form cure for 120 min at 80 °C. ⁵ Data was obtained from green parts, printed using a Form 2, 100 μm, High Temp settings, washed for 5 min in Form Wash, and air-dried without a post-cure. ⁶ Data was obtained from parts printed using a Form 2, 100 μm, High Temp settings, and postcured with Form Cure at 80 °C for 120 min. ⁷ Data was obtained from parts printed using a Form 2, 100 μm, High Temp settings, and postcured with Form Cure at 60 °C for 60 min plus an additional thermal cure in a lab oven at 160 °C for 90 min.