262.723.3345 kim@hudapack.com


Revealing the strengths in parts and components

At Hudapack Metal Treating, Inc. we specialize in strengthening parts to make them harder, tougher, stronger and more resistant to wear. A partner of choice, many of America’s leading industrial companies count on us to improve the finished quality of their parts.

Our skilled employees offer the material knowledge and process expertise to assist you in procuring the right heat treatment process for your projects. You have the security of several physical plant locations with outstanding backup process capabilities to assure your commercial heat treating experience with Hudapack is unmatched.

Take a closer look at the services we provide:


Hudapack supports a wide range of atmosphere heat treating services including carburizing, carbonitriding, neutral hardening, carbon restoration, annealing, normalizing, stress relieving and cryogenic treatment. Our batch internal quench furnaces are equipped with state-of-the-art instrumentation to ensure superior heat treating quality, through precise control of temperature, atmospheres and time.

We can also process parts to meet straightness specifications. Secondary services such as straightening, and blasting are also available. We also offer black oxide and plating processes through outside services.

Batch internal quench furnaces

Straightening services


Hudapack offers a three-zone continuous atmosphere carburizing furnace with integral quench. This furnace, with automatic atmosphere controls, paperless charting and a nitrogen safety purge system, can treat up to 1,000 pounds per hour, subject to part configuration and case depth. After carburizing or carbonitriding, parts can be either atmosphere cooled or oil quenched. This is ideal for deep case hardening of 0.050 inches or greater.

3 zone furnace with integral quench

1,000 pounds per hour


Hudapack is a full service provider for a wide variety of induction hardening needs. Our induction-hardening capabilities can accommodate case depths of .010 inches to .600 inches with scan lengths up to 48 inches. We can also process a broad range of steels suitable for induction hardening in lots between one and 10,000 parts per day.

Diverse diameters and lengths

Broad range of steels

Lots between 1 and 10,000 per day


Hudapack specializes in the induction hardening of fasteners, shafts, gears and other parts that require selective hardening. Our equipment includes automatic fastener hardening to harden the tips of self-tapping screws. Our bowl feeder lines are capable of hardening 6,000 to 20,000 parts per hour, depending on size and configuration.

Automatic fastener hardening

6,000 to 20,000 parts per hour


Hudapack’s capabilities in vacuum processing include stainless steel solution annealing, precipitation hardening, homogenizing of cast structures, normalizing, aging and tempering. We also support tool steel and high-speed steel hardening. Vacuum processing prevents scaling or decarburizing of the work surface with either nitrogen or argon gas quench.

Stainless steel

2-6 Bar Quench

Nitrogen or argon gas quench

Aluminum Processing

Hudapack offers air or fan-blast quenching of aluminum as well as still or agitated water from ambient temperature to 180°F. We can anneal material to condition “0” and most all temper designations (T4, T6, etc.) We can also process any heat-treatable alloys and castings. Our furnaces are surveyed to +/- 10°F, including a new furnace which offers 12 charted thermocouples for outstanding uniformity. Hudapack’s aluminum furnaces can process parts up to 8 feet long x 4 feet high x 4 feet deep.

fan and water quenching

Heat-treatable alloys and casting

12 charted thermocouples


Hudapack offers nitriding processes through our sister company, Diamond Heat Treat in Rockford, IL.


Ferritic nitro-carburizing

Gas nitriding

Industries Served

Automotive • Biomedical • Chemical • Computer • Construction • Electrical • Farm Machinery • Fasteners • Food Processing • Forging • Foundry • Gear • Hardware • Investment Casting • Marine • Military • Mining • Pharmaceutical • Recreational • Tool and Die