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BASF Ultracur3D ST45

Ref.: BASF-ST45

96.00 €

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In stock 10 units available for immediate shipping.
units available for shipping in 4 - 6 days Available for shipment within 4 - 6 days

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Approximate delivery date: Monday 18 November

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Ultracur ST45 is a versatile reactive urethane photopolymer from the BASF (Forward AM) Tough resin portfolio, known for its exceptional toughness and rapid processing capabilities. Available in three formulations—ST45 (clear), ST45M (clear), and ST45B (black)—this resin offers an outstanding combination of high strength, long-term toughness, and impact resistance. Designed for 3D printing high-performance functional parts, Ultracur ST45 is particularly effective for applications that require high accuracy and mechanical strength.

Part 3D printed with the ST45 resin

Image 1: Part 3D printed with the ST45 resin. Source: BASF (Forward AM).

The material properties of Ultracur ST45 underscore its suitability for demanding applications. With a Young’s modulus of 2300 MPa and a tensile strength of 60 MPa, this resin is engineered to provide excellent rigidity and durability. It also boasts a heat deflection temperature of 73°C, allowing it to maintain performance in elevated thermal conditions. Additionally, with a hardness of Ahore 80 D, ST45 offers the toughness needed for a wide range of applications, including housings, high-detail prototypes, customized gadgets and tools, orthoses, orthodontic devices, and molds.

Part 3D printed with the ST45 B resin

Image 2: Part 3D printed with the ST45 B resin. Source: BASF (Forward AM).

Ultracur ST45 is compatible with a variety of resin 3D printing technologies such as SLA, LCD and DLP, making it easy to incorporate into existing production workflows. This adaptability ensures that users can achieve high-quality results across different projects, whether they are focusing on rapid prototyping or producing intricate, high-performance parts. Manufacturers benefit from the streamlined processes offered by ST45, allowing for efficient production of durable components without compromising on quality.

Part 3D printed with the ST45 M resin

Image 3: Part 3D printed with the ST45 M resin. Source: BASF (Forward AM).

For those interested in delving deeper into the capabilities of Ultracur ST45, detailed technical datasheets are available in the Attachments section that address essential properties, including UV resistance, industrial chemical resistance, and biocompatibility. The accompanying user manual serves as a practical resource for guidance on storage, printer settings, and post-processing techniques to maximize the material's potential. To enhance user experience further, the BASF settings navigator assists in identifying suitable printer settings for specific equipment, ensuring optimal print outcomes and leveraging the effectiveness of ST45 resin across various applications.

Curing, washing, and sintering properties
Washing time	-
Curing time	-
Curing temperature	- ºC

General information
Manufacturer	BASF
Material	Urethane-acrylate oligomers
Format	1 kg / 5 kg / 10 kg
Technology	SLA / LED-LCD / DLP
Wavelength	385 / 405 nm
Viscosity	@ 25 ºC: 1.2 g/cm³320 mPas / @ 30 ºC: 230 mPas
Density (solid)	(ASTM D792) 1.2 g/cm³
Density (liquid)	(ASTM D4052-18a) 1.12 g/cm³

Printing properties
Layer height	- µm
Layer exposure time	-
Layer off time	-
Bottom layer exposure	-
Bottom layer count	-

Mechanical properties
Izod impact strength	- KJ/m²
Charpy impact strength	(ISO 179 @ 23 ºC) (ST45) 1.3 kJ/m² / (ST45B) 2.6 kJ/m² / (ST45M) 2.7 KJ/m²
Elongation at break	(ASTM D412C) (ST45) 25 % / (ST45B) 21 % / (ST45M) 20 %
Tensile strength	(ASTM D412C) (ST45) 60 MPa / (ST45B) 53 MPa / (ST45M) 58 MPa
Tensile modulus	(ASTM D638) (ST45) 2300 MPa / (ST45B) 2000 MPa / (ST45M) 2300 MPa
Flexural strength	(ASTM D790) (ST45) 110 MPa / (ST45B) 95 MPa / (ST45M) 100 MPa
Flexural modulus	(ASTM D790) (ST45) 2400 MPa / (ST45B) 2100 MPa / (ST45M) 2200 MPa
Surface hardness	(ASTM D2240) Shore 80 D

Electrical properties
Dielectric strength	(DIN EN 60243-1) ST45B: 29 kV/mm

Thermal properties
Softening temperature	(ASTM D648) (ST45) 73 ºC / (ST45B) 63 ºC / (ST45M) 67 ºC
Flammability classification	(UL 94, 1.5 mm) HB

Specific properties
Maximum water absorption	(ASTM D570) > 5%

Other
HS Code	2916.1
Lifetime (since manufacturing)	12 M

The Ultracur3D resins from BASF exhibit high light sensitivity, so they should always be stored in their closed container and away from light.

Before starting a print, it is necessary to shake the resin well and, if possible, place it under vacuum to eliminate any bubbles that may have formed.

Once printed, the cleaning of the parts must be done with isopropyl alcohol. It is recommended to submerge the parts in a container with isopropyl alcohol and place this container inside an ultrasonic cleaner for 4 minutes. It is advisable not to immerse the part for extended periods to avoid deformation and softening.

After cleaning, the parts should dry for 30 minutes at 40 ºC. Once dry, the parts printed with BASF Ultracur3D resins should cure at room temperature to achieve optimal properties. The curing conditions will depend on the characteristics of the printer used and the curing equipment.