Case Study: Tungsten Nickel Iron Alloy In The Defense Industry

Introduction

Tungsten-Nickel-Iron Alloy is a high-density material utilised in the defence sector. Its measured physical characteristics and performance data have led to its use as a critical component in a range of technical applications that advance defence technologies and contribute to national safety. In this article the material properties and technical applications are described for academic and industrial evaluation.

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Figure 1. Military Missiles

Applications of Tungsten-Nickel-Iron Alloy in Defence

Tungsten-Nickel-Iron Alloy, also known as W-Ni-Fe Alloy, is employed in the defence sector. The constituent metals tungsten, nickel and iron are combined in precise proportions to meet established material specifications. The following sections describe its technical applications in defence:

Figure 2. Tungsten-Nickel Alloy Rods

-High-density Penetrators:

The alloy’s density and verified yield strength are utilised in the manufacture of penetrators. These projectiles are designed to impact fortified targets, and their performance is confirmed by standardised testing.

-Stabilised Ballistic Missiles:

Within missile design, the W-Ni-Fe Alloy contributes to structural stability. Its density and form stability are measured to counteract aerodynamic forces, thereby maintaining the intended flight path.

-Electromagnetic Shielding:

Defence systems sometimes require protection against electromagnetic interference (EMI) and high-frequency signals (RF). The alloy exhibits quantifiable properties that reduce electromagnetic wave transference, thereby safeguarding sensitive electronic equipment and maintaining consistent communication under defined conditions.

-Radar Absorption:

This alloy is incorporated into radar-absorbent materials. Its measured electromagnetic absorption characteristics reduce the radar cross-section, which limits detection by enemy radar installations.

Case Study: Tungsten-Nickel-Iron Alloy in Defence Applications

--The Challenge

A client required a rod manufactured from a tungsten-nickel alloy possessing slight magnetic properties and a target hardness of approximately 26 HRC. The specified alloy, 95W-3Ni-2Fe, fulfils the required magnetic and hardness criteria.

--The Method

The alloy comprises 95% tungsten, 3% nickel and 2% iron. The following quantifiable properties indicate its fitness for purpose:

1. Slight Magnetism: The iron content imparts a magnetic response that remains below the established threshold.

2. Target Hardness: The 95W-3Ni-2Fe alloy consistently achieves a hardness of approximately 26 HRC under standard testing conditions.

3. Corrosion Resistance: The alloy demonstrates a measured resistance to corrosion under defined environmental conditions.

4. High Density: Tungsten contributes to a density value that meets the weight and stability requirements for the application.

5. Mechanical Performance: The material retains its structural integrity when subjected to the operational temperatures and loads indicated by testing protocols.

--Outcomes

The integration of the 95W-3Ni-2Fe rod met the client’s technical specifications regarding magnetism and hardness (approximately 26 HRC). In addition, the alloy fulfils the criteria for corrosion resistance, density and mechanical performance as determined by established testing. The client has since incorporated this alloy rod into their processes, with subsequent evaluations confirming adherence to the pre-set performance standards.

Conclusion

The measurable properties of tungsten-nickel-iron alloy justify its application in the defence industry. The material is employed in various applications, including improving the penetrative capability of ammunition, maintaining missile trajectories and providing electromagnetic shielding. Given ongoing technological development, this alloy is expected to continue playing a key role in supporting defined defence specifications and ensuring reliable system performance internationally.

With two decades of experience, Stanford Advanced Materials (SAM) is a recognised manufacturer and distributor of tungsten-nickel-iron alloys. For further details, please visit our website.

Reference:

[1] Miller, J. W. (09/03/2022). Hawk Missile Systems, manufactured by Raytheon, USA. America Magazine. Retrieved on 08/08/2023 from https://www.americamagazine.org/politics-society/2022/03/09/defence-industry-ukraine-242533.