Atlantic Heat Treating specializes in 4140 heat treating.

The great thing about 4140 is it’s versatility and reliability. It is one of the most common steels, most likely due to it’s superior toughness, high caliber ductility and strong resistance against wear after quenching and tempering.

What is 4140 Steel Often Used for?

Below is a list of some of the most common uses of 4140 Steel.

• Machine Parts
• Tool Bodies
• Nuts and Bolts
• Gears
• Conveyor Parts
• Slides
• Steel Couplings
• Knives
• Drill Collars
• Crankshafts
• Piston Rods
• Motor Shafts
• Molds
• Hydraulics
• Steel Stub
• Chain links

After 4140 Heat Treating and quenching, we can also put a finish on the product such as black oxide.

4140 Steel is molybdenum manganese, chromium consisting of low alloy steel. It is most often formed using conventional annealing techniques. It is a tough steel which means it needs more force than others.

4140 steel is most often annealed at 1600 degrees fahrenheit it is followed by a slow cool in a furnace.

When tempering, 4140 steel can be done at a range 400 to 1200 degrees fahrenheit depending on the level of hardness needed.  Hardness is increased at a lower temperature.

When Hardening 4140 steel, this is done by cold working or heating and then quenching.

About Atlantic Heat Treating

AHT is the industry leader in pricing on quality work, as well as turnaround time. We are conveniently located in Ajax, Ontario just off of Hwy.401 for easy access to Toronto and surrounding areas.

Contact us today to learn more about how we can help your business.