LOCTITE 3D | 3955 HDT280 FST

The LOCTITE 3D 3955 HDT280 FST is a halogen free, high performance flame retardant 3D printing resin with excellent flexural and tensile physical properties. The material is available in black, in both 1 litre and 5 litre bottles.

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The LOCTITE 3955 Resin

The LOCTITE 3955 is the first 3D printing resin that passes vertical burn and aerospace FST standards. A high-performance, halogen-free material, 3955 has a high HDT that allows it to withstand harsh conditions with negligible deformation. The resin guarantees a great surface finish, which makes it great for connector and interior parts in the aerospace and rail industries.

This material requires pre-melting!

Key Features

  • Halogen free
  • High performance
  • High modulus with excellent flexural and tensile physical properties
  • Very high HDT
  • Passes flammability 2x10 second Vertical Burn and FST
Mechanical PropertiesMethodThermal Post Cure
Tensile Stress at Break ASTM D638 66 ± 4 MPa
Young's Modulus ASTM D638 3595 ± 126 MPa
Elongation at Failure ASTM D638 2.27 ± 0.2 %
Flexural Stress at Break ASTM D790-B 138 ± 16 MPa
Flexural Modulus ASTM D790-B 5200 ± 112 MPa
Flexural Strain at Break ASTM D790-B 2.4 % ± 0.4
Other PropertiesMethodThermal Post Cure
Heat Deflection Temperature Internal DMA 0.455MPa at 59.2° and 237° C
Heat Deflection Temperature Internal DMA 1.82 MPa at 160°C
24 hr Soak in Acetone Internal at 25C < 0.2 %
24 hr Soak in IPA Internal at 25C < 0.2 %
24 hr Soak in Water Internal at 25C = 0.4 %
168 hr Soak in Water Internal at 25C = 1.0 %
Other PropertiesMethodThermal Post Cure
Liquid Density ASTM D792 1.27
Solid Density ASTM D792 1.39
Rating - Vertical Burn for Flammability Internal - 3mm Thickness Pass at 10 seconds
Rating (12 second burn) AirBus AITM2-0002 6mm Thickness Pass
Rating (6 second burn) AirBus AITM2-0002 6mm Thickness Pass
Gas Components of Smoke AirBus AITM2-0002 6mm Thickness Pass
Other PropertiesMethodThermal Post Cure
CTE (Coefficient of Thermal Expansion) 25C - 160C ASTM E831 80.5 μ/m/° C
CTE (Coefficient of Thermal Expansion) 160C - 280C ASTM E831 136 μ/m/° C
Thermal Aging (105C for 2000 hr) ASTM D790-B < 5 %
Shore Hardness (0s, 3s, D scale) ASTM D2240 84, 82
Viscosity at 65° C ASTM D7867 800 - 1000 cP

Data sheet

Young’s Modulus (MPa)
3595 ± 126 MPa
Liquid Density
1.27g/ml

Specific References

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