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Clear Resin V5 Technical Data Sheet

Clear Resin V5 is an exceptionally clear and color-neutral General Purpose Resin, offering an optimal balance of fast print speed, high dimensional accuracy, and presentation-ready appearance.

Clear Resin V5 creates highly transparent and colorless parts that can be polished to near optical transparency. Create parts that are stiff and strong with a smooth surface finish that rivals acrylic.

Clear Resin V5 Technical Data Sheet

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Clear Resin V5 is an exceptionally clear and color-neutral General Purpose Resin, offering an optimal balance of fast print speed, high dimensional accuracy, and presentation-ready appearance.

Clear Resin V5 creates highly transparent and colorless parts that can be polished to near optical transparency. Create parts that are stiff and strong with a smooth surface finish that rivals acrylic.

Compatibility and Post-Processing

Post-Processing

Step Recommended Hardware Standard
Cure Profile
Max-Strength
Cure Profile1
Washing2 Form Wash/L V2 5 minutes or until clean
Drying3 -- 10 min

Post-Curing

Form Cure/L V1 5 min at room
temperature
15 min at 60 °C
Form Cure/L V2 1 min at room
temperature
4 min at 60 °C
  1. The Max Strength cure profile uses an exteneded, heated cure to improve the strength, stiffness, and temperature resistance of the final parts.
  2. Clear Resin V5 can be washed with either IPA or Formlabs Resin Washing Solution.
    • When using Resin Washing Solution, an aditional an additional 30-60 second soak in water is required after washing, followed by drying for 4-6 hours or by drying with compressed air.
  3. For the best surface finish, Formlabs recommends allowing parts printed in Clear Resin V5 to air dry for at least 10 minutes after washing, before handling. 

Hardware Compatibility

Platform Printer Compatibility Validated Layer Heights
Form 4 Form 4 Compatible 0.1 mm
0.05 mm
0.025 mm
Form 4B
Form 4L
Form 4BL
Form 3 Form 3 Not Compatible
use Clear Resin V4.1
Form 3B
Form 3L
Form 3BL

Mechanical Properties

Tensile Properties

Tensile Properties
(Green & Standard Post-Cure)2
        Green         Standard Cure Profile (Cure V1) Standard Cure Profile (Cure V2)  Method
Ultimate Tensile Strength 46 MPa
(6672 psi)
51 MPa
(7340 psi)
49 MPa
(7110 psi)
ASTM D638-14
Tensile Modulus 2200 MPa
(319 ksi)
2575 MPa
(373 ksi)
2167 MPa
(314 ksi)
ASTM D638-14
Elongation at Break 13% 10% 13.50% ASTM D638-14

 

Tensile Properties (Heated Post-Cure for Improved Strength)2

  Max-Strength Cure Profile
(Cure V1) 
Max-Strength Cure Profile
(Cure V2)
Method
Ultimate Tensile Strength   60 MPa
(8702 psi)
58 MPa
(8410 psi)
ASTM D638-14
Tensile Modulus   2750 MPa
(399 ksi)
2700 MPa
(392 ksi)
ASTM D638-14
Elongation at Break   8% 11% ASTM D638-14

Flexural Properties

  Green                         Standard Cure Pofile6 Max Strength Cure Profile6 Method
Flexural Strength 83 MPa
(12038 psi)
92 MPa
(13343 psi)
105 MPa
(15229 psi)
ASTM D790-15
Flexural Modulus 2100 MPa
(305 ksi)
2450 MPa
(355 ksi)
2700 MPa
(392 ksi)
ASTM D790-15

Impact Properties

  Green Standard Cure Profile6 Max-Strength Profile6 Method
Notched Izod 32 J/m
(0.598 ft-lb/in)
29 J/m
(0.542 ft-lb/in)
29 J/m
(0.542 ft-lb/in)
ASTM D256-10
Gardner Impact Strength
1.6 mm (1/16 in) thickness
-- <0.1 J
(<2 in*lb)
<0.1 J
(<2 in*lb)
ASTM D5420-21

Fracture Properties

  Standard Cure Profile6 Max-Strength Cure Profile6 Method
Maximum Stress
Intensity Factor (Kmax)
0.63 MPa m0.5
(573 psi in0.5)
-- ASTM D5045-14
Work of Fracture (Wf) 26.7 J/m2
(1.82 ft-lb/ft²)
-- ASTM D5045-14

General Properties

                                  

Standard Cure Profile6

Max-Strength Cure Profile6 Method
Shore Hardness 78 D 80 D

ASTM D2240-15

Printed Density 1.21 g/cm3
(0.0437 lb/in3)
1.21 g/cm3
(0.0437 lb/in3)
ASTM D792

Representative Tensile Curve

Samples were tested following ASTM D638, Type I. The curve is a single sample chosen as representative and may not be representative of the average values of stress and strain. Samples were conditioned in a laboratory environment at 23°C, 50% relative humidity for 48 hours prior to testing.

Formlabs Clear Resin V5 Representative Tensile Curve

Representative Tensile Curve

Single Sample ASTM D638 Type 1 Bar Conditioned 23°C 50% RH

Thermal & Electric Properties

Thermal Properties

  Green Standard Cure Profile6 Max-Strength Cure Profile6 Method
Glass Transition Temp (Tg) -- 96 °C
(205 °F)
96 °C
(205 °F)
ASTM D4065
Heat Capacity at 25 °C -- 1.8 J/g*K
(0.430 BTU/lb-°F)
-- ASTM E1269
Coefficient of Thermal Expansion (-30-140 °C) -- 114.1 μm/m/°C
(63.4 µin/in-°F)
-- ASTM E831-19
Thermal Conductivity -- 0.540 W/m*K
(3.75 BTU-in/hr-ft²-°F)
0.540 W/m*K
(3.75 BTU-in/hr-ft²-°F)
ASTM E1530-25
Heat Deflection Temp. @ 1.8 MPa 47 °C 49 °C
(120 °F)
59 °C
(138 °F)
ASTM D648-16
Heat Deflection Temp. @ 0.45 MPa 52 °C 56 °C
(133 °F)
74 °C
(165 °F)
ASTM D648-16

 

Electrical Properties

  Green Standard Cure Profile6 Max-Strength Cure Profile6 Method
Surface Resistivity -- >1x10^12 Ω/sq >1x10^12 Ω/sq ASTM D257
Comparative Tracking Index -- 600 V -- ASTM D3638
Dielectric Strength4 -- 16.3 kV/mm
(415 V/mil)
-- ASTM D149-20
Dielectric Constant (k')4 -- 4.28 @ 1 MHz -- ASTM D150-22
Dielectric Dissipation (D)4 -- 0.036 @ 1 MHz -- ASTM D150-22

Dynamic Mechanical Analysis (DMA)

Clear Resin V5 Loss Modulus, Storage Modulus and tan 𝛿

A DMA curve from -20 °C to 170 °C at 3 °C/min is shown.

Dynamic Mechanical Analysis

Thermal Expansion by TMA

Sample was tested by ASTM E831-19 in a TMA. Ramp rate was 5 °C/min with a Ultra-High Purity Nitrogen purge of 50 cc/min.

Thermal Expansion by TMA

Chemical Compatibility

Solvent Weight Gain

Percent weight gain over 24 hours for a printed and post-cured 1 x 1 x 1 cm cube immersed in respective solvent:

Solvent 24 hr weight gain (%)
Acetic Acid 5% 0.9
Acetone 5.1
Bleach ~5% NaOCl 0.7
Butyl Acetate 0.3
Diesel Fuel 0.1
Diethyl glycol monomethyl ether 1.1
Hydraulic Oil 0.1
Hydrogen peroxide (3%) 0.9
Isooctane <0.1
Isopropyl Alcohol 0.3
Mineral oil, heavy 0.2
Mineral oil, light 0.2
Salt Water (3.5% NaCl) 0.8
Skydrol 5 0.7
Sodium hydroxide solution (0.025% pH = 10) 0.8
Strong Acid (HCl Conc) 0.5
TPM 0.5
Water 0.9
Xylene <0.1

Mechanical Properties after Immersion (ASTM D543)

Tested for chemical compatibility according to ASTM D543. The influence of various chemicals was tested by measuring tensile modulus and strength after different exposure times. Exposed samples were stored in containers and fully immersed in the test chemicals for 1 day and 1 week. After removal, exposed samples were washed and conditioned for 24 hours at 22°C before mechanical testing. Mechanical testing was conducted according to ASTM D638 using Type 4 tensile samples at standard lab conditions (22°C). Results are reported as a % difference from the measured values of non-exposed samples.

Results are from samples tested in Grey V5. These results are expected to follow the same trends and be approximately the same, however some results may vary.

1 Day Immersion

Solvent Relative Modulus Relative Strength Relative Elongation Relative Mass
IPA 104.54% 98.58% 132.33% 100.48%
Acetone 21.02% 20.08% 152.24% 109.38%
NaOH 97.89% 92.69% 80.42% 101.08%
HCl 97.02% 93.37% 104.23% 100.94%
DI Water 88.63% 89.21% 105.36% 101.38%
H2O2 86.20% 87.54% 103.71% 101.57%
Bleach 91.55% 91.87% 101.29% 101.14%
Diesel 98.79% 99.48% 125.45% 100.11%
Motor Oil 94.86% 100.27% 104.11% 100.63%
Skydrol 5 92.77% 100.85% 119.69% 100.90%

1 Week Immersion

Solvent Relative Modulus Relative Strength Relative Elongation Relative Mass
IPA 88.43% 86.98% 115.87% 101.71%
Acetone Sample Disintegrated Sample Disintegrated Sample Disintegrated

Sample Disintegrated

NaOH 77.38% 80.26% 67.19% 102.46%
HCl 84.07% 83.14% 76.80% 102.09%
DI Water 65.29% 67.62% 83.53% 103.23%
H2O2 62.66% 62.75% 91.67% 103.63%
Bleach 77.78% 77.60% 58.92% 102.67%
Diesel 100.45% 101.34% 101.63% 100.09%
Motor Oil 102.62% 103.32% 84.20% 100.14%
Skydrol 5 104.59% 105.93% 87.22% 100.79%

Bar Charts of Properties after Immersion

Chemical Compatibility Chart

Optical Properties

  Standard Cure Profile6

Max-Strength Cure Profile6

Method
Refractive Index 1.62 1.62 ASTM D542-22
Gloss Level (60°, XY) 89 GU -- ASTM D523
Gloss Level (60°, Z) 24 GU -- ASTM D523
Transmission @ 2 mm 85 % 85 % ASTM D1003-21
a* @ 2 mm -4.02 -4.31 ASTM E 1348-15
b* @ 2 mm 7.52 5.58 ASTM E 1348-15
Transmission @ 10 mm 59 % 59 % ASTM D1003-21
a* @ 10 mm -4.25 -3.98 ASTM E 1348-15

Transmission refers to the amount of visible light that passes through the part
a* and b* are more commonly associated with the CIELAB color space, where they denote axes for color measurement:
a* axis: Ranges from green to red, with negative values indicating green and positive values indicating red.
b* axis: Ranges from blue to yellow, with negative values indicating blue and positive values indicating yellow.

Light Transmission Curve

Light transmission was tested on a Varian Cary 50 Spectrophotometer from 200 to 1000 nm. Noise at high wavelengths is expected and may not be indicative of real fluctuations. The chosen sample was 3 mm thick, washed for 10 minutes in IPA and then cured for 1 minute in the Form Cure (2nd Generation). The surface was vertical and unpolished.

Light Transmission for Clear V5

Light Transmission Curve

Outgassing

The Outgas Test was performed in a vacuum environment of less than 5 × 10-5 torr according to ASTM E595, for a duration of 24 hours, at 125°C on three specimens per sample. Data was obtained using Grey Resin V5, and is expected to fall in the same approximate range. Some results may vary. Consult Grey Resin V5 TDS for information on printing and post-processing of samples.

Outgassing Standard Cure Profile6
TML 1.70%
CVCM < 0.01%
WVR 0.33%

Footnotes

  1. Material properties may vary based on part geometry, print orientation, print settings, temperature, and disinfection or sterilization methods used.
     
  2. Data was obtained from parts printed on a Form 4 printer with 100 µm Clear Resin V5 settings, washed in a Form Wash V2 for 5 minutes in ≥99% Isopropyl Alcohol, and post-cured as according to the column header
     
  3. Data was obtained from parts printed on a Form 4 printer with 100 µm Clear Resin V5 settings, washed in a Form Wash V2 for 5 minutes in ≥99% Isopropyl Alcohol, and post-cured in a Cure V1 at with the specified curing profile
     
  4. Data was obtained using Grey Resin V5, and is expected to fall in the same approximate range. Some results may vary. Consult Grey Resin V5 TDS for information on printing and post-processing of samples.