Stainless steel is a go-to alloy when mechanical strength and corrosion resistance are just as important as shielding performance. While it’s not as conductive as copper, it still provides effective EMI attenuation and is exceptionally durable.

Stainless mesh is ideal for applications that require long-lasting structural integrity, such as vents, shielding panels, and combined EMI/filtration systems. Grade 316 offers superior corrosion resistance, especially in marine and chemical settings.

Best for:
Industrial, medical, and military applications where durability, hygiene, and environmental resistance are critical.

Copper is the gold standard for EMI shielding because it has one of the highest electrical conductivities of any industrial metal. This makes it extremely efficient at attenuating both electric and magnetic fields, especially in high-frequency applications.

Copper mesh is ideal when maximum shielding effectiveness is required. It is easy to weave into fine mesh patterns, making it suitable for detailed enclosures, gaskets, and vents. However, it is relatively soft and can oxidize, which may require surface treatment depending on the environment.

Best for:
High-frequency electronics, precision enclosures, and general-purpose EMI shielding where conductivity is the top priority.

Aluminum is lightweight, moderately conductive, and easy to form, making it suitable for applications where weight is a concern but shielding is still required. However, aluminum naturally forms an oxide layer that can reduce conductivity, so it’s often used with surface treatments or combined with other materials.

Aluminum mesh is excellent for EMI shielding panels and enclosures that need to remain light, such as in aerospace, mobile electronics, or high-performance telecom infrastructure.

Best for:
Weight-sensitive applications in aerospace, transportation, and portable electronics.

Nickel mesh excels at low-frequency magnetic field shielding, thanks to its high magnetic permeability. While not as conductive as copper, its magnetic properties make it uniquely suited for applications where magnetic interference is the dominant concern.

Nickel is particularly effective in environments where magnetic shielding is more important than electrical shielding. It is also corrosion-resistant and performs well in high-temperature conditions.

Best for:
Medical imaging systems, power electronics, and other applications exposed to strong magnetic fields.

Monel is a specialty alloy composed primarily of nickel and copper, giving it strong EMI shielding properties and exceptional corrosion resistance, especially against seawater and acids.

This alloy is frequently used when both electrical performance and extreme environmental durability are needed. It holds up well in high-temperature and corrosive environments where standard alloys may fail.

Best for:
Aerospace systems, naval electronics, chemical processing, and defense equipment.