4340 alloy steel test panel corner view

4340 Steel Test Panels

Because of its high strength and impact resistance, 4340 steel is often used in aircraft landing gear and other structural parts. Metaspec makes AISI 4340 alloy steel test panels, coupons and specimens in a wide range of sizes, thicknesses and surface finishes. Some standard sizes include 3" x 6", 3" x 10", 4" x 6", and 1" x 4". These steel panels are machined from bar or plate. Customized test panels are available on request.

  • Test panels can be machined from plate or bar material. A wide range of sizes and thickness are available, including panels as thin as 0.032 inch. This process leaves some visible machining marks on the surface instead of an ‘as rolled’ surface finish.

    An additional polishing process can smooth out the machining marks on the faces of the test panel and is available upon request. Machined test panels are interleaved or packed individually to prevent surface scratches.