Rigid
Engineering Resin
Structural prototypes · Tight tolerances
The strongest resin in our SLA lineup. Holds tight tolerances under load without giving up SLA's signature surface finish.
SLARigidWhiteTurbine Engine
SECTION · 01
Strengths
& uses
Where dimensional accuracy and load-bearing stiffness are the priority in SLA.
Strengths
- Tensile strength 57 MPa — the strongest resin we run
- Excellent dimensional accuracy
- Young's modulus 2300 MPa, elongation 15 % — stiff without High Temp's brittleness
- Heat deflection 55 °C at 0.45 MPa — keep it away from sustained heat
Common applications
- Structural prototypes
- Tight-tolerance assemblies
- Industrial fixtures
- Functional engineering parts
SECTION · 02
Compare with
other SLA
materials
Rigid measured against the SLA core lineup.
SECTION · 03
Technical
Specifications
Manufacturer datasheet values. Real-world performance will vary — see disclaimer.
Mechanical
Properties
Properties
Shore Hardness
77 D
ASTM D2240
Tensile Strength
57 MPa
ASTM D638
Elongation at Break
15 %
ASTM D638
Young's Modulus
2300 MPa
ASTM D638
Bending Modulus
1920 MPa
ASTM D790
Bending Strength
94 MPa
ASTM D790
Izod Impact Strength
28 J/m
ASTM D256
Thermal
Properties
Properties
Heat Deflection @ 0.45 MPa
55 °C
ASTM D648
Heat Deflection @ 1.82 MPa
49 °C
ASTM D648
Durability
& Compliance
& Compliance
UV Aging Stability
Stable to 1000 h
ISO 4892-2
Cytotoxicity
Passed
ISO 10993-5
* Actual part performance varies with geometry, build orientation, layer height, infill, and post-processing. For load-bearing or safety-critical applications, contact us for part-specific validation.
Source: Phrozen Protowhite Rigid datasheet ↓Rigid · Engineering Resin
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