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3D Materials


Robusta LR

Introduction

Robusta LR is a high tough, white photocurable resin for challenging model processing. Robusta LR is not as strong as Robust G in terms of impact strength and elongation at break, but tensile strength and flexural modulus Robusta LR are higher, thermal performance is superior to Robusta G, and printing accuracy is higher.

Applications

Functional hand model with high toughness requirements
Snap-on model
Fixture


Details

As a high-tough material series, Robusta LR offers better elongation at break and impact strength, and higher thermal performance and precision. It is best suited for models and parts that require high toughness, or prototypes used to make vacuum complexes. Its texture and color are very similar to ABS and other thermoplastics, making it ideal for prototyping and functional testing.

Advantages

Very tough and very durable
Easy to clean
Fine surface texture
High precision


Specification

Liquid Properties

Measurement

Condition

Value

Viscosity

@ 26 °C (78.8 °F)

450-520 cps

Color

White


Density

@ 25 °C (77 °F)

1.12 g/cm³


Optical Properties

Ec(critical exposure)

Dp(slop of cure-depth vs.ln(E) curve)

8.5-9.3 mJ/cm2

0.125-0.14


Mechanical Properties (90 Minutes UV Postcure)

ASTM Method

Property Description

Value

ASTM D 638

Tensile Modulus

2540-2720 MPa

ASTM D 638

Tensile Strength at Break

45-53 MPa

ASTM D 638

Elongation at Break

7-10%

ASTM D 648 @66PSI

Heat Deflection Tempertature

50-55℃

ASTM D 790

Flexural Strength

60-75Mpa

ASTM D 790

Flexural Modulus

2080-2350Mpa

ASTM D 256

Izod Impact (Notched)

20-30 J/m

ASTM D 2240

Hardness Shore D

81-85




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