4140 Steel Test Panels

4140 Steel Test Panels

4140 alloy steel test panels, coupons and specimens are available in a wide range of sizes, thicknesses and surface finishes. Some standard sizes include 1" x 2", 1" x 4", 2" x 4", 3" x 6", 3" x 10", and 4" x 6". These panels are machined from bar or plate material. 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.