Steel alloy 4130 (ST4130), also known as Chrome Moly after the 2 key elements of its composition, chromium, and molybdenum, is a general-purpose alloy steel widely used by the aviation and motorsports industries due to its weldability, fabrication, and mild hardenability in all offered forms (tubes, bars, sheets and plates). They are available in two different material states (Normalized and Annealed) depending on the process of how the material is heated and cooled.
The Normalized condition (sometimes referred to as "Condition N") is the harder and stronger condition and is best used when forming is not needed. Normalizing relieves internal stress on steel and improves toughness in steels that may harden after the cold working process.
The Annealed condition (sometimes referred to as "Condition A") is the softer and formable condition and is best used when forming is needed. Annealing relieves internal stresses, softens and makes the material more ductile.
4130 steel bars/rods are offered as part of our own branded (AVIATIONEU NEW ERA) product lines, featuring good strength and weldability without compromising steel abrasion or impact resistance. They do not require further heat treatment and are commonly used in structural applications, including gears, fasteners, and some aircraft exterior. Offered in Normalized condition and Cold Finished as indicated by the letters "NRZ" and "CF" respectively in the product reference code (SKU). These bars/rods comply with ASTM -A108, AMS -6348, AMS -6370 & AMS/MIL -S-6758 specifications. Available in different diameters and lengths in inches. Unless otherwise mentioned, there is additional cost if manufacturing test reports are required.
For additional information, please refer to the supplied documentation, the individual product presentations or contact us.