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  • BASF Ultracur3D High Impact


    New product

    8 Items

    100,00 €tax excl.
    121,00 €tax incl.

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    Resins with high impact resistance for functional prototypes requiring precision and mechanical resistance.

    Despite the advantages of resin printing, especially in terms of resolution and surface finish, its implementation in the industrial sector has always lagged behind other technologies such as FDM or SLS. This is due to the poor mechanical properties originally presented by the available acrylate-based resins.

    However, in recent years this has been changing with the appearance of new engineering resins developed to provide parts with excellent mechanical and thermal properties. Today we can find resins optimised to cover some of the most demanding applications in the industrial sector, such as new flexible resins, resins with high wear resistance or resins with high impact resistance.

    In order to cover the most demanding needs of the industrial sector, the prestigious chemical multinational BASF has developed a line of light-curable resins known as Ultracur3D, compatible with the main 3D resin printing technologies: SLA, DLP and LED-LCD that use wavelengths of 385 nm or 405 nm.

    Unlike most 3D printing resins that are composed of acrylate oligomers, BASF's Ultracur3D resins are based on urethane-acrylates, which means they are more flexible and less fragile.

    Within the Ultracur3D range there are four types of resin:

    • Ultracur3D FL: Flexible resins
    • Ultracur3D EL: Elastic Resins
    • Ultracur3D ST: Resins with high impact resistance
    • Ultracur3D RG: Rigid resins with excellent mechanical properties

    The Ultracur3D resins ST45 and ST80 belong to BASF's range of high impact resins. These resins have similar mechanical properties to the resins in the rigid resin series, combined with higher elasticity and breakage deformation, giving them excellent impact resistance.

    ST45 resin is available in three versions:

    • ST45: This is the standard version, supplied like the resins of the RG, FL and EL series in translucent colour.
    • ST45B: Black version.
    • ST45M: Additive version to be compatible with a wider range of printers and to facilitate its use. It can be used even in printers that do not have open parameters.

    ST45B vs ST45

    Image 1: Part printed with ST45B (left) and ST45 (right). Source: forward-am.com

    All the resins in the ST series stand out for their balanced mechanical properties, which make them the most versatile Ultracur3D resins, as well as for their excellent print quality, making them the ideal choice for prints requiring a higher level of detail.


    Image 2. Piece printed with Ultracur3D ST45. Source: forward-am.com

    Like all the resins in BASF's Ultracur3D range, the high-impact resins offer impeccable print quality as well as an outstanding surface finish. This, together with their excellent price/performance ratio and balanced mechanical properties, makes them an ideal material not only for the production of prototypes but also for functional components and the final product.

    Ultracur3D ST45 and Ultracur3D ST80 are available in 1 kg format. They are also available on request in 5 kg and 10 kg format.

    Impact strength (KJ/m2) 1.39
    Elongation at break (%) 25
    Tensile strength (MPa) 62
    Tensile modulus (MPa) 2300
    Flexural strength (MPa) 2430
    Flexural modulus (MPa) 109
    Surface hardness 8
    Softening temperature (ºC) 61
    Translucent Translucent

    BASF's Ultracur3D resins are highly sensitive to light and should therefore always be stored in their closed containers and away from light.

    Before starting a print, the resin should be shaken well and, if possible, vacuumed to remove any bubbles that may have formed.

    Once printed, the pieces should be cleaned with isopropyl alcohol. To do this it is advisable to immerse the pieces in a container with isopropyl alcohol and place this container in an ultrasonic cleaner for 4 minutes. It is recommended not to immerse the piece for long periods of time to avoid deformation and softening.

    After cleaning, the pieces should be dried for 30 minutes at 40 ºC. Once dry, parts printed with BASF Ultracur3D resins should be cured at room temperature to obtain optimum properties. Curing conditions will depend on the characteristics of the printer used and the curing equipment.

    All customers who have purchased any resin from the BASF Ultracur3D range can request the appropriate user guide. This can be done using the contact form by selecting "Technical Support" in the subject line and the order number of the resin.

    General Information
    Manufacturer BASF
    Technology LED-LCD, DLP, SLA
    Material Urethane-acrylate oligomers
    Wavelength 385 nm, 405 nm
    Format 1 kg
    Color ST45/ST45M/ST80: Clear
    ST45B: Black
    General properties
    Viscosity (-30 ºC) ST45: 215 mPas
    ST45B/ST45M: 230 mPas
    ST80: 418 MPa
    Viscosity (50 ºC) ST45/ST45B: 80 mPas
    ST45M: 85 mPas
    ST80: 121 mPas
    Density (solid) (ASTM D792) 1.2 g/cm3
    Density (liquid) (ASTM D4052-18a) ST45/ST45M/ST45M: 1.12 g/cm3
    ST80: 1.085 g/cm3
    Mechanical properties
    Young's Module  (ASTM D638) ST45: 2300 MPa
    ST45B: 2040 MPa
    ST45M 2260 MPa
    ST80: 1530 MPa
    Tensile strength (ASTM D412C) ST45: 62 MPa
    ST45B: 52.5 MPa
    ST45M: 57.7 MPa
    ST80: 34.3 MPa
    Elongation at break (ASTM D412C) ST45: 25 %
    ST45B: 21.4 %
    ST45M: 19.6 %
    ST80: 21 %
    Bending modulus (ASTM D790) ST45: 2430 MPa
    ST45B: 2140 MPa
    ST45M: 2230 MPa
    ST80: 1670 MPa
    Flexural strength at 5% deformation (ASTM D790) ST45: 109 MPa
    ST45B: 93.9 MPa
    ST45M: 99.5 MPa
    ST80: 60.71 MPa
    Impact resistance at -30 ºC (Izod indented ASTM D256) ST45: 20.2 J/m
    ST45B: 20.18 J/m
    ST45M: 19.65 J/m
    ST80: 14.85 J/m
    Impact resistance at 23 ºC (Izod indented ASTM D256) ST45: 20.8 J/m
    ST45B: 20.56 J/m
    ST45M: 19.74 J/m
    ST80: 17.13 J/m
    Impact resistance at 23 ºC (Charpy indented ISO 179-1)  ST45: 1.39 kJ/m2
    ST45B: 2.66 kJ/m2
    ST45M: 2.78 kJ/m2
    ST80: 1.47 kJ/m2
    Hardness (Shore A, ASTM D2240) ST45/ST45M/ST45M: 81
    ST80: 82
    Wear resistance  -
    Resilience  -
    Thermal Properties
    HDT at 0.45 MPa (ASTM D648) ST45: 73 ºC
    ST45B: 63 ºC
    ST45M: 67.2 ºC
    ST80: 46.5 ºC
    HDT at 1.82 MPa (ASTM D648) ST45: 61 ºC
    ST45B: 52 ºC
    ST45M: 57.8 ºC
    ST80: 42.8 ºC
    Flammability (UV 94 1.5 mm) HB
    Lifetime  12 months
    HSCODE 2916.1

    * The typical values detailed in this table should be considered as a reference. Actual values may vary depending on the 3D printer model used, part design and printing conditions. We recommend that you confirm the results and final properties with your own tests. For further information, please refer to the product data sheet.

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