Substitutes

Substitutes and Alternatives for Tungsten

The availability of viable substitutes is a key factor in assessing Tungsten's criticality. Across its 3 primary applications, substitution options range from commercially viable alternatives with performance trade-offs to applications where Tungsten currently has no effective substitute.

Substitution Analysis by Application

The following table details available substitutes for Tungsten across its primary applications, including the trade-offs involved:

Performance Trade-offs

In most applications, substituting Tungsten involves measurable performance penalties. Ceramic tools work for some high-speed finishing operations; CBN and diamond serve niche applications; but tungsten carbide provides the best combination of toughness and wear resistance for the vast majority of metalcutting and mining applications. In high-performance applications such as cemented carbide cutting tools, these trade-offs can be particularly significant.

Research and Development

Active research programs are underway to develop improved substitutes and to reduce the amount of Tungsten required per unit of product (thrifting). However, timelines for commercializing new alternatives typically span years to decades. The limited substitutability of Tungsten is a primary driver of its high criticality rating, prompting government-funded substitution research programs.