ASA is a durable engineering thermoplastic with strong UV, weather, mechanical, and thermal resistance. It is well suited to exterior prototypes and end-use components that must retain appearance and performance during long-term outdoor exposure.
Design Advantages
UV and weather resistance for long-term exterior service
Balanced stiffness, strength, and impact resistance for functional components
Useful heat resistance for exterior housings, brackets, fixtures, and signage
Low water absorption plus resistance to acids and alkalis
Material Specifications
Item
Published Value
Material family
Acrylonitrile styrene acrylate (ASA)
Filament diameter
1.75 mm
Published density
1.05 g/cm3
Vicat softening temperature
106 °C
Heat deflection temperature
92 °C at 1.8 MPa; 100 °C at 0.45 MPa
Water solubility
Insoluble
Material Properties
Physical and Thermal Properties
Property
Test Method
Published Value
Density
ISO 1183
1.05 g/cm3
Melt index
260 °C at 2.16 kg
7.0 ± 0.8 g/10 min
Melting temperature
DSC at 10 °C/min
210 °C
Glass transition temperature
DSC at 10 °C/min
Not reported
Crystallization temperature
DSC at 10 °C/min
Not reported
Vicat softening temperature
ISO 306 and GB/T 1633
106 °C
Heat deflection at 1.8 MPa
ISO 75
92 °C
Heat deflection at 0.45 MPa
ISO 75
100 °C
Saturated water absorption
25 °C and 55% RH
0.45%
Mechanical Properties
Property
Test Method
Published Value
Young’s modulus X/Y
ISO 527 and GB/T 1040
2,450 ± 270 MPa
Young’s modulus Z
ISO 527 and GB/T 1040
2,120 ± 260 MPa
Tensile strength X/Y
ISO 527 and GB/T 1040
37 ± 3 MPa
Tensile strength Z
ISO 527 and GB/T 1040
31 ± 4 MPa
Elongation at break X/Y
ISO 527 and GB/T 1040
9.2 ± 1.4%
Elongation at break Z
ISO 527 and GB/T 1040
4.6 ± 0.8%
Flexural modulus X/Y
ISO 178 and GB/T 9341
1,920 ± 130 MPa
Flexural modulus Z
ISO 178 and GB/T 9341
1,650 ± 120 MPa
Flexural strength X/Y
ISO 178 and GB/T 9341
65 ± 5 MPa
Flexural strength Z
ISO 178 and GB/T 9341
40 ± 3 MPa
Impact strength X/Y
ISO 179 and GB/T 1043
41.0 ± 2.3 kJ/m2; notched 19.6 ± 1.8 kJ/m2
Impact strength Z
ISO 179 and GB/T 1043
4.9 ± 0.6 kJ/m2
Representative values from standardized printed specimens. Actual part performance depends on geometry, orientation, wall thickness, moisture condition, processing parameters, and service environment.
Processing
Recommended Processing Window
Setting
Recommended Range
Drying before printing
Forced-air drying oven at 80 °C for 8 h
Printing and storage humidity
Below 20% RH; sealed with desiccant
Nozzle temperature
240 to 270 °C
Build surface
High-temperature or textured PEI surface with suitable adhesive
Bed temperature
80 to 100 °C
Cooling fan
0 to 80%
Printing speed
Below 250 mm/s
Chamber temperature
45 to 60 °C
Representative Specimen Conditions
Parameter
Source Condition
Nozzle temperature
260 °C
Bed temperature
80 °C
Printing speed
200 mm/s
Infill density
100%
Pre-test conditioning
Annealed and dried at 80 °C for 12 h
Chemical and Handling Characteristics
Characteristic
Published Information
Composition
ASA
Odor and skin hazards
Solid material reported as odorless with no skin hazard
Chemical stability
Stable under normal storage and handling conditions
Water solubility
Insoluble
Acid and alkali resistance
Resistant
Organic solvent resistance
Not resistant to some organic solvents
Oil and grease resistance
Not resistant to some oils and greases
Flammability
Flammable
Combustion products
Water, carbon oxides, and nitrogen oxides; pungent odor
Design and Validation Considerations
Design for anisotropy: published strength, elongation, and impact performance are lower in the Z direction than in X/Y.
Use X/Y-oriented load paths where maximum strength, ductility, and impact performance are important.
Dry and store material below 20% RH with desiccant; moisture can affect extrusion quality and finished-part performance.
Use an enclosed, temperature-controlled build environment to manage shrinkage, warping, layer bonding, and dimensions.
Annealing at 80 to 90 °C for 6 to 12 h may change performance but can also cause deformation; validate the specific geometry and process.
Confirm chemical compatibility, sustained-temperature behavior, creep, flammability, and safety-critical loads in the intended service environment.
Published Data and Qualification
The values in this sheet are based on standardized specimen testing documented by the material source and are provided for design reference and material comparison. Lucent Additive has not independently generated every published value. Final-part performance can differ because of geometry, orientation, processing, moisture conditioning, and service environment. This document does not create a material warranty or replace qualification of the customer’s finished component.
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