Find the Right Type of Engineering Resin to Fit Your Needs!

Last modified: April 8, 2021
You are here:
Estimated reading time: 4 min

Commodity resins are often inexpensive and easy to process plastics. They are used in all kinds of applications, including toys, packaging, and consumer products.

Engineering resins are plastic materials that have better mechanical and/or thermal properties than commodity plastics. These high-strength plastics are often resistant to high temperatures, wear, and corrosives. They simulate a range of injection-molded plastics to provide engineers with a wide choice of material properties for prototyping, testing, and manufacturing.

All engineering resins require post-curing under UV light to reach their maximum mechanical properties.

Now, read on to find the right type of resin to fit your needs.

The engineering resin materials FacFox offers

SLA Tough Resin (Lasty-KS) SLA High-temp Resin -100℃ (YGH-5001) SLA High-temp Resin – 270℃ (Somos PerFORM) SLA ABS-like Resin (Lasty-R) SLA PP-like Resin (Somos EvoLVe 128)
Price $ $$$ $$$ $$ $$
Max Size 1700 x 900 x 800 mm (White)
800 x 800 x 500 mm (Grey)
600 x 600 x 400 mm 350 x 350 x 300 mm 800 x 800 x 500 mm 800 x 800 x 500 mm 
Min Size 2 x 2 x 2 mm 5 x 5 x 5 mm 5 x 5 x 5 mm 2 x 2 x 2 mm 2 x 2 x 2 mm
Default Layer Height 0.1 mm 0.1 mm 0.1 mm 0.1 mm 0.1 mm
Optional Layer Heights 0.05, 0.1 mm 0.1 mm 0.1 mm 0.05, 0.1 mm 0.1 mm
Tolerance ±0.2% (±0.2 mm) ±0.2% (±0.2 mm) ±0.2% (±0.2 mm) ±0.2% (±0.2 mm) ±0.2% (±0.2 mm)
Heat endurance Under 80 ℃ Under 100 ℃ Under 268 ℃ Under 75 ℃ Under 50 ℃
Smoothness ★★★★ ★★★★ ★★★★ ★★★★★ ★★★★
Detail Performance ★★★★ ★★★★ ★★★★ ★★★★ ★★★★
Accuracy ★★★ ★★★★ ★★★★ ★★★★ ★★★★
Rigidity ★★★★ ★★★ ★★★ ★★★ ★★★★
Flexibility ★★★★ ★★ ★★ ★★★★ ★★★★

SLA Tough Resin (Lasty-KS)

Lasty-KS is a commonly used 3D printing material with great accuracy and durability. Similar to the properties of ABS, it is used with stereolithography (SLA) 3D printers. Lasty-KS can be used in model making and prototyping of automotive, medical, consumer electronics, etc.

The durability of the parts printed with Lasty-KS extends 6.5 months. It’s light green and yellow-toned white at first, then gradually turns into pure white.

Typical Features

  • Medium viscosity, easy for coating and cleaning.
  • Improved strength retained, improved dimensions retention of parts in humid condition.
  • Need minimal part finishing.
  • Long shelf life in the machine.

Typical Benefits

  • Need less part finishing time, easier post-curing.
  • Build accurate and tough parts with improved dimensional stability.
  • High-quality control for vacuum casting parts.
  • Outstanding machinability.

Physical Properties – Liquid Material

Appearance Light yellow and green toned white
Density 1.13 g/cm3 @ 25 ℃
Viscosity 390 cps @ 26 ℃
Dp 0.141 mm
Ec 8.6 mJ/cm2
Building layer thickness 0.1 mm

Mechanical Properties of 90 Minutes Post-Cured Material

MEASUREMENT VALUE
Hardness, Shore D 86
Flexural modulus, Mpa 2,498-2,550
Flexural strength, Mpa 70-75
Tensile modulus, MPa 2,451-2,565
Tensile strength, MPa 40-56
Elongation at break 11-17%
Poisson’s Ratio 0.38-0.42
Impact strength notched Izod, J/m 30 – 43
Heat deflection temperature, ℃ 63
Glass transition, Tg,℃ 75
Coefficient of thermal expansion, /℃ 92*E-6
Density 1.15
Dielectric Constant 60 Hz 4.5
Dielectric Constant 1 kHz 3.9
Dielectric Constant 1 MHz 3.6
Dielectric Constant 1 MHz 14.8

SLA High-temp Resin – 100℃ (YGH-5001)

YGH-5001 resin is a heat-resistant and high-resolution material that creates detailed parts. YGH-5001 has high heat deflection temperatures compared to common SLA resins. Besides, some people also have a preference for the grey color.

Key Benefits

  • Excellent detail resolution
  • 30% lower shrinkage rate
  • Fast, easy processing & finishing
  • Superior high heat tolerance

Applications

  • Industrial tooling
  • High-temperature testing
  • Electrical casings
  • Automotive housings

Physical Properties – Liquid Material

Appearance Grey
Density 1.1 g/cm3 @ 25 ℃
Viscosity 580 cps @ 28 ℃
Dp 0.10 mm
Ec 15.0 mJ/cm2
Building layer thickness 0.10 mm

Mechanical Properties of Post-Cured Material

MEASUREMENT VALUE
Hardness, Shore D 85
Flexural modulus, Mpa 2,900-3,220
Flexural strength, Mpa 64-69
Tensile modulus, MPa 1,900-2,090
Tensile strength, MPa 40-44
Elongation at break 13-20%
Impact strength notched Izod, J/m 34.4
Heat deflection temperature, ℃ 99.6

SLA High-temp Resin – 270℃ (Somos PerFORM)

SLA Somos PerFORM is a ceramic-filled material that creates extremely stiff and detailed parts. PerFORM has one of the highest heat deflection temperatures of all SLA resins, starting at 132°C and reaching up to 268°C with a thermal post-cure.

Try this material for fixtures, structural features, prototype mold inserts, and wind tunnel test models. This material is also available in high resolution.

Key Benefits

  • Excellent detail resolution
  • Fast, easy processing & finishing
  • Superior high heat tolerance

Applications

  • Tooling
  • Wind tunnel testing
  • Hot air, gas, and fluid flow
  • Electrical casings
  • Automotive housings

Physical Properties – Liquid Material

Appearance Off white
Density ~1.61 g/cm3 @ 25°C
Viscosity ~1,000 cps @ 30°C
Dp 4.3 mils
Ec 7.8 mJ/cm²
E10 80 mJ/cm²

Mechanical Properties of Post-Cured Material

MEASUREMENT UV Post-cure / Thermal Post-cure
Tensile Strength 68 MPa / 80 MPa
Tensile Modulus 10,500 MPa / 9,800 MPa
Elongation at Break 1.1% / 1.2%
Poisson’s Ratio 0.32 / 0.33
Flexural Strength 120 MPa / 146 MPa
Flexural Modulus 10,000 MPa / 9,030MPa
Izod Impact (Notched) 17 J/m / 20 J/m
Hardness (Shore D) 94 / 93
Water Absorption 0.2% / 0.1%

SLA ABS-like Resin (Lasty-R)

Lasty-KS is a commonly used 3D printing material with great accuracy and durability. Similar to the properties of ABS, it is used with stereolithography (SLA) 3D printers. Lasty-KS can be used in model making and prototyping of automotive, medical, consumer electronics, etc.

The durability of the parts printed with Lasty-KS extends 6.5 months. It’s light green and yellow-toned white at first, then gradually turns into pure white.

Typical Features

  • Medium viscosity, easy for coating and cleaning.
  • Improved strength and stability in humid conditions.
  • Need minimal part finishing.
  • Long lifetime in the machine.
  • Low bottom contraction.

Typical Benefits

  • Less finishing, easier post-curing.
  • Rather high toughness.
  • High-quality control for vacuum casting parts.
  • Low shrinkage and good resistance to yellowing.
  • Build accurate and tough parts with improved dimensional stability.
  • Outstanding machinability.

Physical Properties – Liquid Material

Appearance Yellow
Density 1.11-1.15 g/cm3 @ 25 ℃
Viscosity 395-480 cps @ 31 ℃
Dp 0.13-0.145 mm
Ec 9.5-10.5 mJ/cm2
Building layer thickness 0.05-0.12 mm

Mechanical Properties of 90 Minutes Post-Cured Material

MEASUREMENT VALUE
Hardness, Shore D 75-84
Flexural modulus, Mpa 2,592-2,671
Flexural strength, Mpa 63-68
Tensile modulus, MPa 2,489-2,591
Tensile strength, MPa 36-52
Elongation at break 17-28%
Poisson’s Ratio 0.4-0.44
Impact strength notched Izod, J/m 50-75
Heat deflection temperature, ℃ 47-58
Glass transition, Tg,℃ 50-62
Coefficient of thermal expansion, /℃ 90-102*E-6
Density 1.12-1.18
Dielectric Constant 60 Hz 4.2-5.0
Dielectric Constant 1 kHz 3.3-4.2
Dielectric Constant 1 MHz 3.2-4.0
Dielectric Constant 1 MHz 12.8-16.1

SLA PP-like Resin (Somos EvoLVe 128)

Somos® EvoLVe 128 is a durable stereolithography material that produces accurate, high-detailed parts and has been designed for easy finishing. It has a look and feel that is almost indistinguishable from finished traditional thermoplastics, making it perfect for building end-use parts like jigs & fixtures, or prototypes for functional testing applications – resulting in time, money and material savings during production or product development.

Product Features

  • Easy to clean & finish
  • High strength & durability
  • Accurate & dimensionally stable
  • High detail

Applications

  • Aerospace, automotive, medical, electronic applications
  • Consumer products
  • Tough, functional prototypes
  • Snap-fit designs
  • Jigs & fixtures

Physical Properties – Liquid Material

Appearance White
Density ~1.12 g/cm3 @ 25°C
Viscosity ~380 cps @ 30°C
Dp 4.3 mils
Ec 9.3 mJ/cm²
E10 95.1 mJ/cm²

Mechanical Properties of Post-Cured Material

MEASUREMENT UV Post-cure
Tensile Strength at Break 56.8 MPa
Tensile Modulus 2,964 MPa
Elongation at Break 11%
Flexural Modulus 2,654 MPa
Izod Impact (Notched) 38.9 J/m
Hardness (Shore D) 82
Water Absorption 0.40%
Tags:
Was this article helpful?
Dislike 0
Views: 34

Continue reading

Previous: Narrowing Material Options for CNC Machining
Next: A Sheet Metal Materials Comparison: Galvanized vs. Galvannealed Steel
Shopping Basket