Alloy Steel

Bohler-Uddeholm stocks a full range of alloy steel in our Western USA facilities. See our Western Operations Brochure for more details.  

Here is a listing of our materials:

Alloy Bars

ETD 150®
A modified alloy heat treated and drawn at a high temperature. ETD 150® is high strength with good machining properties. Available in cold drawn; ground and polished in 12’ rounds only. ETD 150® is a registered trademark of LaSalle Steel Company.

4140 ANN
Alloy steel that is annealed for machining and can be heat treated for higher strength and hardness. Stocked in rounds, hex, squares and plate.

4140 TGP (Turned, Ground, and Polished)
Alloy that is prehardened to 26-32 HRc. Ground finish for use as shafting. Available in up to 24’ random lengths. Tubed to protect.

4130 ANN
Alloy with lower carbon (.30) for better welding. Rounds in 12’ lengths in a normalized condition.

4340
Triple alloy steel, will accept a deeper hardening in heat treatment. Available in annealed or normalized rounds and annealed plate. Should be heat treated before being put into service.

8620
Alloy designed for gears or similar applications. Surface can be carburized for higher wear, while retaining a more ductile core. Rounds in 12’ lengths; also some rounds with lead for enhanced machining.

Alloy Plate

4140
The basic alloy for machining parts. Contains chrome and molybdenum for good hardening. We stock hot rolled annealed material. Parts are intended for heat treatment prior to use.

4340
Nickel is added to alloy content. Stocked as hot rolled annealed plate. Higher strength and deeper hardening after heat treatment than 4140.

ASTM A514
Prehardened structural steel plates up to 6 inches thick.

8620
Used for gears. Stocked as hot rolled annealed turned bar. The gear teeth can be hardened, but the core of the material remains more ductile to reduce shock failure.

Click Here for the Color Code Chart for Carbon and Alloy