About Smiths

We are a world-class supplier of engineering raw materials. Our objective is to provide all our customers, from the small machine shop to the large multi-national corporation, a supply path that continuously delivers the highest levels of service, quality and value.

TAM 3950 (95W Ni Fe)

Tungsten Alloy

TAM 3950 Tungsten Alloy

TAM 3950 is a high density tungsten alloy used in ballast and balancing applications.

Ballast & Balancing

TAM 3950 (95W-Ni-Fe) is a tungsten alloy product containing 95% tungsten, 3.5% nickel and 1.5% iron. It is a high-density material used in applications in industries such as aerospace and motorsport as ballast and in balancing components.


TAM 3950 is slightly magnetic and has superior tensile strength (870N/mm²). With a density of 18.00 gm/cm³, the alloy is resistant to acids and therefore is suitable for hostile environments. With low coefficient of expansion and low thermal conductivity, TAM 3950 benefits from high resistance to thermal fatigue.

Typical Applications

Commercial applications for this engineering material include:

  • Balance weights
  • Ballast
  • Weight reduction applications
  • Aerospace and motorsport

We stock TAM 3950 in round bar.

Technical Assistance

Our knowledgeable staff and resident metallurgists will be pleased to assist you further on any technical topic. Smiths Metal Centres Limited also boasts an in-house UKAS Accredited Testing Laboratory which is unique within the multi-metal and plastic stockholding sector. We believe this underlines our total commitment to quality and our ethos of being the complete service provider.

Additional Info

A technical datasheet for TAM 3950 is available in PDF file format. To view and download, please click here.

We offer in-house processing options - for more information, please refer to our processing services.

Read our corporate brochure by clicking here.

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