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Markets & products

Nuclear Technology

Markets & products

Nuclear Technology

Custom Tungsten Heavy Alloy Solutions for Nuclear Medicine

Our Densram® Tungsten Heavy Alloys (ranging from 90% to 97% Tungsten) are the preferred choice over traditional lead for modern nuclear applications.

  • Maximum Protection, Minimum Volume: With a density up to 18.5 g/cm³, Densram® provides equivalent shielding to lead with significantly less bulk—ideal for compact medical devices.
  • Exceptional Machinability: Unlike lead, which is soft and difficult to machine precisely, our tungsten alloys allow for tight tolerances and complex threading, ensuring a perfect fit for your assembly.
  • Non-Toxic & Sustainable: Densram® is a "green" material. It is non-toxic and does not require the special handling or environmental protections associated with lead.
  • Certified Quality: Our production processes are certified to EN 9100 (Aerospace and Defense standards) and ISO 9001, ensuring the traceability and reliability required for nuclear technology.

 


Your Design, Our Precision Engineering

In the demanding field of Nuclear Medicine and Radiotherapy, precision and safety are non-negotiable. At Casram, we specialize in the bespoke manufacturing of radiation shielding components based entirely on our customers' technical designs.

Using our proprietary Densram® Tungsten Heavy Alloys, we provide a full-cycle production service: from material sintering to high-precision CNC machining. We don't just supply raw materials; we deliver finished, high-tolerance parts that meet your exact specifications.

Manufacturing to Customer Specification

We transform your CAD designs and technical drawings into physical components with rigorous quality control. Our facility is equipped to handle complex geometries that traditional shielding materials cannot achieve.

Key Applications in Nuclear Medicine:

  • Custom Syringe & Vial Shielding: Tailor-made protection for the handling of radiopharmaceuticals.
  • Collimators & Multi-Leaf Collimators (MLC): High-precision tungsten leaves and plates designed for radiotherapy beam shaping.
  • Isotope Transportation Containers: Bespoke shielded "pigs" and containers designed for the safe logistics of medical isotopes.
  • Diagnostic Equipment Components: Custom internal shielding for PET and SPECT scanning systems.
  • Radioisotope Production: Components for cyclotrons and target processing equipment built to withstand intense environments.

Technical Specifications: DENSRAM® Tungsten Heavy Alloys

Choosing the right grade depends on your requirements for density, magnetic interference, and mechanical strength. Our DENSRAM® alloys are categorized into two main series to meet diverse industrial needs.

Magnetic vs. Non-Magnetic Solutions

  • F Series (NiFe): Slightly magnetic alloys offering higher tensile strength (UTS).
  • C Series (NiCu): Non-magnetic alloys specifically designed for environments where magnetic interference must be zero, such as near MRI machines or sensitive diagnostic sensors.

 

Material Magnetic Behaviour Chemical composition UTS MPa AMS-T-21014
ASTM B 777-07
Density
(g/cm3) ±0,2
DENSRAM® F1 Slightly magnetic W 90%, Rest NiFe 760 - 1000 Class 1 17
DENSRAM® F2 Slightly magnetic W 93%, Rest NiFe 760 - 950 Class 2 17,6
DENSRAM® F3 Slightly magnetic W 95%, Rest NiFe 730 - 900 Class 3 18
DENSRAM® F4 Slightly magnetic W 97%, Rest NiFe 700 - 850  Class 4 18,5
DENSRAM® C1 Non magnetic W 90%, Rest NiCu 600 - 800 Class 1 17
DENSRAM® C2 Non magnetic W 93%, Rest NiCu 600 - 770 Class 2 17,6
DENSRAM® C3 Non magnetic W 95%, Rest NiCu 600 - 750 Class 3 18

A Partner from Prototype to Series Production

Whether you need a single prototype for a new medical device or a large-scale production run of shielding components, Casram offers the technical expertise to support your project.

Technical Support: Not sure about the best alloy grade for your design? Our engineering team can assist in selecting the optimal Densram® composition for your specific radiation energy levels.

 


 

Ready to realize your design?

Contact our nuclear technology specialists for a consultation.

Contact Us:

  • Email: info@casram.com
  • Phone / Whatsapp: +41 76 624 27 64
  • Address: Via Cantonale 31, Mezzovico 6805, Switzerland

Applications

Transportation Containers
Syringe Shieldings
Collimators
Multileaf-Collimators
Various Shielding components