41L40/41L42 Alloy Round Bar Stock

41L40 Alloy is the perfect metal for all your hardening needs. While, 41L42 Alloy has been the preferred choice for many industries.

41L40/41L42 Alloy

41L40 Alloy is the perfect metal for all your hardening needs. No matter how extreme the environment, 41L40 Alloy will outperform and outlast the competition.

From ball bearings to small diameter rod and everything in between, 41L40 Alloy is available in all shapes, sizes, and grades that can be customized to meet your application needs. Whether you are a manufacturer or fabricator, our products are a game-changer

With 41L40 Alloy, you’ll get a blade that’s tough and durable. Its hardness is uniform and will be maintained across the entire blade. You’ll also get a blade that resists corrosion, has high impact toughness, and maintains good sharpness.

Meanwhile, the 41L42 Alloy has been the preferred choice for many industries. It is a precipitation hardening alloy steel with chromium as one of its alloying elements. It has a high hardenability and exceptional hardness penetration because of its high chromium concentration. The alloys with this grade can offer high performance and excellent toughness properties.

O'Hare 41L40/41L42 Alloy

O’Hare Precision Metals can provide a wide range of services for either company-supplied or customer-supplied components and materials. Just like how we can offer yo the best 41L40/41L42 Alloy bar stocks and  41L40/41L42 Alloy round bar stocks in O’Hare!

Machinability & Welding

Cold roll steel alloy 41L40 is a free-machining alloy. It’s great for sections that need to be strong and wear resistant. It’s easier to machine thanks to the presence of lead. Meanwhile, welding steel alloy 41L42 is difficult, it may be done using any of the common welding procedures if the section is preheated.


Axles, drills, dies, shafts, piston rods, lead screws are just some of the many applications of 41L40/41L42 Alloy




Tensile strength (psi) 

Yield strength (psi) 

Elongation in –

Reduction of area

Brinell Hardness 


– 233(lb / cu. in.)

95,000 – 105,000 416 MPa

85,000 – 95,000 –

2″ (%) 15 – 25 –

(%) 50 – 60 –

(BHN) 200 – 230 233

Chemical Properties














0.38-0.43 0.01

0.75-1.00 0.30

0.035 –


0.15-0.35 0.20

0.80-1.10 28.00-30.00

0.15-0.25 3.50 4.20

0.15-0.35 –

– 0.15

– 0.15

– 0.02

Do you have questions about 41L40/41L42 Alloy. Just contact our highly skilled personnel in O’Hare Precision Metals. They are dedicated to providing smooth-flow service.

Request a quote for 41L40/41L42 Alloy bar stocks and 41L40/41L42 Alloy round bar stocks now!