Formlabs
Rigid 4000 Resin
SLA · Glass-filled photopolymer · White
Rigid 4000 is a heavily glass-filled resin with a smooth, polished finish, intended for stiff, strong parts that deflect as little as possible under load. It suits engineering-grade prototypes that need structural rigidity.
33 MPa (green)
Tensile Strength
2.1 GPa (green)
Tensile Modulus
23% (green)
Elongation at Break
41°C green
Heat Deflection Temperature

Finish and colour of the material as printed
Why choose Rigid 4000 Resin?Why this material
A smooth, polished surface finish
High stiffness and strength for load-bearing parts
Minimal deflection under load
Mechanical properties approaching the stiffness of PEEK
Technical propertiesVerified figures only
33 MPa (green)
69 MPa (post-cured), ASTM D638-14
Tensile Strength
2.1 GPa (green)
4.1 GPa (post-cured), ASTM D638-14
Tensile Modulus
23% (green)
5.3% (post-cured), ASTM D638-14
Elongation at Break
41°C green
60°C post-cured · [email protected]: 48°C green / 77°C post-cured, ASTM D648-16
Heat Deflection Temperature
White
Natural Color
Typical applicationsWhat it is used for
Mounts and brackets
Jigs and fixtures
Thin-walled parts
General load-bearing applications
Compatible printersSystems that run this material
Form 4 / Form 4L where officially compatible
DocumentsTechnical data sheet
Technical Data Sheet
Download the Technical Data SheetMaterial characteristicsAppearance and classification
- Glass-filled
- high rigidity
- minimal deflection
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