4140 Hex Bar Stock

Capital Steel & Wire is a leading distributor of 4140 hex bar stock in cold finished form. Our 4140 annealed hex bars are available in various sizes and can be cut to your exact specifications. 

4140 alloy steel is a cold drawn steel that machines well and can be heat treated. We also supply 41L40 in hex bar form.

Learn more about Capital Steel & Wire's current inventory stock and our distribution capabilities. Give one of our sales representatives a call or use the get a quote contact form to see our current 4140 hex bar stock availability.

The charts below outline the chemical and physical properties and characteristics for annealed and normalized 4140 cold drawn steel, including in the hex form.

4140 Chemical Properties

Carbon 0.38-0.43
Manganese 0.75-1.00
Phosphorus, Max % 0.035
Sulfur, Max % 0.040
Silicon 0.15-0.35
Chromium 0.80-1.10
Molybdenum 0.15-0.25

4140 Mechanical Properties (Annealed)

Tensile Strength 95,000 psi
Yield Strength 60,500 psi
Elongation in 2" 25.7%
Reduction of Area 55.9%
Brinelle Hardness 197

4140 Mechanical Properties (Normalized)

Tensile Strength 148,000 psi
Yield Strength 95,000 psi
Elongation in 2" 17.7%
Reduction of Area 46.8%
Brinelle Hardness 302

The Capital Steel & Wire team is standing by to help you find the right steel product for your application. Call us at 866-773-7800 to learn more about our 4140 grade hex bar stock availability or fill out the contact form found to your right. A representative will respond to your request in a short amount of time.