High-Density Alloy for Radiation Shielding and Precision Applications
This high-density specialty alloy offers exceptional hardness, strength, and thermal stability. Thanks to its extremely low thermal expansion, it is ideal for high-precision applications in high-temperature environments. Its high absorption of X-ray and gamma radiation makes it a go-to material for radiation shielding.
Excellent concentricity characteristics make this alloy a reliable choice for precision tools used in grinding and drilling at micrometer-level tolerances. Other applications include counterweights and military-grade components.
Products
Products Made from WNiFe/WNiCu
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Form and Sizes
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Form
Sizes
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Round bars
Ø 1 - Ø 100
Flat bars
3x5 - 100x100
Square bars/profiles
3x3 - 80x80
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Vibration-damping tool holders
Counterweights and vibration weights
Shieldings

Custom part needed? Simply upload your technical drawing and receive a quote.
Material Quality Meets Personalized Service
Tight manufacturing tolerances and minimal contamination ensure consistent material quality.
Automated testing throughout the entire production process ensures consistent product quality.
High inventory levels and short response times ensure uninterrupted production processes.
Our extensive experience in processing and application helps you select the ideal material.
Each material batch is tested and delivered with comprehensive material certification.
For critical applications, we offer 100% inspection of individual parts based on your specifications.
Why SVS

Key Features
Advantages of the High-Density Alloy
Maximum Density
Extremely high density of approx. 19.3 g/cm³, comparable to gold and nearly twice that of lead.
High Hardness and Wear Resistance
Mohs hardness of 7.5–8. Maintains mechanical strength even under elevated temperatures.
Dimensional Stability
Minimal thermal expansion ensures shape retention under temperature fluctuations.
Excellent Conductivity
High electrical and thermal conductivity makes it suitable for contact elements and cooling applications.
Applications
Applications
This alloy is used wherever precise weight control, high concentricity, or radiation shielding is required. In grinding and drilling spindles, it achieves micrometer-level concentricity, enabling precise machining results.
As sprue inserts in steel molds, it prevents erosion in the gating area. In X-ray systems, it shields against radioactive radiation in both medical and metrology applications. Its resistance to heat and deformation also makes it suitable for inductive heating and upsetting of components.
Examples of use:
Aerospace, Automotive industry, Medical technology, Construction industry
Expert Advice for Your Application
Our material experts will advise you on the optimal material selection and custom solutions.
