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Formula L1

Material Overview

Formula L1 is an excellent substitute for ABS in 3D printing. Its opaque white color resembles ABS closely, and its physical attributes make it suitable for almost any application. Aside from being strong, it is also highly practical to work with as it only requires the very minimum of post-processing.



Highly accurate
Good resistance to humidity
Highly durable
Good resistance to yellowing
Suitable for a very wide range of applications


Functional prototypes
Concept models
Low-volume production parts


Liquid Properties

Measurement Condition Value
Viscosity @ 27 °C (80.6 °F) 270~380 cps
Color    White
Density @ 25 °C (77 °F) 1.13 g/cm³

Optical Properties

Ec(critical exposure) Dp(slop of cure-depth vs.ln(E) curve)
7.0~8.1 mJ/cm2 0.14-0.16

Mechanical Properties (90 Minutes UV Postcure)

ASTM Method Property Description Value
ASTM D 638 Tensile Modulus 2,531-2,685 MPa
ASTM D 638 Tensile Strength at Break 43-60 MPa
ASTM D 638 Elongation at Break 7 -11%
ASTM D 648 @66PSI Heat Deflection Tempertature 64~77 ℃
ASTM D 790 Flexural Strength 72- 78 Mpa
ASTM D 790 Flexural Modulus 2,485-2,560 Mpa
ASTM D 256 Izod Impact (Notched) 29 - 35 J/m
ASTM D 2240 Hardness Shore D 75~90

Download ProtoFab Material Selection Guide 2018