Full length heat treating of bar and tubing enables Gerdau MACSTEEL customers to machine distortion-free parts, eliminate production processes and SAVE MONEY.

The Heat Treating Division of Gerdau MACSTEEL was established in 1981 at a new facility in Huntington, Indiana. Gerdau MACSTEEL engineers were not satisfied with the current state-of-the-art heat treating equipment so they began RE-ENGINEERING everything from quench rings to austenitizing coils.

An effective operation was not obtained until the re-engineering enabled the quench and temper line to achieve the following results: straightness deviations of less than 0.030 inch per 3 ft. of material; Rockwell C hardness spread of less than 4 points; and one-half commercial heat treat tolerances as cited by the American Society for Testing and Materials in its A519 specification.

In 1990 a new quench and temper line increased the capacity at Gerdau MACSTEEL's Heat Treating Division. To accommodate the new line, Gerdau MACSTEEL expanded the Huntington, Indiana facility by 20,000 sq. ft. At the same time, it installed a new 15-inch Behringer band saw to complement the existing abrasive saws.

Today the Heat Treating Division in Huntington, Indiana, is a state-of-art, unique, technically advanced induction heating facility that specializes in bar and tube heat-treating. Full support equipment for customized cutting, straightening, tensile testing and sophisticated metallographic analysis is part of this in-line process, which can handle lengths up to sixty feet.

With many years of "hands-on" experience, Gerdau MACSTEEL has mastered the art of finely tuned induction heating. It works by combining advanced equipment design and manufacturing techniques with the talents, experience and close interaction of operations, technical, sales and management people. Gerdau MACSTEEL's Heat Treating Division Is now undergoing a major $5.3 million expansion. This program will provide a third complete heat treating line along with additional straightening, cutting, marking and packaging equipment - and bring capacity to over 40,000 tons per year.

All Heat Treatable Grades of Carbon, Alloy, Stainless

Bar products - hot finished or cold drawn. ž" to 4" dia.
Tubular products - welded of DOM, hot finished seamless or CD seamless. ž" to 6 ź" O.D.
Close tolerance custom cutting
Guaranteed mechanical properties
Custom straightening to half commercial tolerance
Small quantities available
Experimental/trial orders encouraged at minimal costs

Types of Heat Treating

Thru-Hardening
Surface Hardening
Normalizing/Annealing
Solution Annealing (on Ferritic Stainless)

Typical Applications

Axle Tubing
Crane Booms
Gun Barrel
Machinery
Motor Shafting
Oil Country Accessories
Screw Machine Parts

Components for:

Automotive Drivetrains & Suspensions
Automotive Safety Equipment
Construction Equipment
Farm Equipment & Machinery
Off-Road Equipment
Trucks & Trailers

BAR AND TUBE HEAT TREATING

COMMERCIAL
EXPERIMENTAL
LONG AND SHORT RUNS TO CUSTOMER SPECIFICATIONS

Atmosphere Annealing

We are working together to be a world-class company, growing on a strong base of satisfied customers. We intend to be recognized as the leading heat treater for the forging, cold forming, and foundry industries. We will be partners with our customers and they will know us as competent heat treaters and solution providers. Walking through our clean and well-maintained plants, one will see our commitment to housekeeping and safety. Continuous improvement ideas will result in many examples of automation and mistake proofing which improve our quality and delivery. Employees will earn a competitive wage that supports the American Dream for their families and they will be challenged with new opportunities.

Our Vision, Mission, and Values

Our Vision

We are Working Together To Be A World-Class Company, Growing On A Strong Base Of Satisfied Customers.

We intend to be recognized as the leading heat treater for the forging, cold forming, and foundry industries. We will be partners with our customers and they will know us as competent heat treaters and solution providers.

Walking through our clean and well-maintained plants, one will see our commitment to housekeeping and safety. Continuous improvement ideas will result in many examples of automation and mistake proofing which improve our quality and delivery.

Employees will earn a competitive wage that supports the American Dream for their families and they will be challenged with new opportunities.

Our Mission

Improve long-term relationships with our customers by becoming a partner and an extension of their engineering teams. A continued high level of technical expertise will be key to our growth and allow us to meet the increasing level of customer expectations.

Focusing on continuous improvement, we will develop and innovate process improvements, invest in new technologies, provide a fair return on investment, and expand our capabilities. Efficiency improvements will result in rewards for our employees and cost savings for our customers. Employees will learn and grow through effective training to allow us to keep up with new technologies.

Provide a safe and enjoyable environment for employees to work and share in the Atmosphere Annealing, Inc. Circle of Success, thus enhancing our overall quality of life.

Our Values

For the counsel and guidance of all employees of AAI, we set forth a statement of our core values.

RESPECT	Treat everyone with respect and dignity; treat others as you would like to be treated.
LISTEN	Provide encouragement and listen to the ideas of others.
OPPORTUNITY	Encourage personal growth opportunities for everyone.
SAFETY	Maintain a safe workplace.
ENVIRONMENT	Respect and follow responsible environmental practices.
BEHAVIOR	Strive for high standards in personal and professional behavior.
COMMUNITY	Be a good neighbor in our communities.