Services & Special Processes We Offer

Engineered Heat Treat offers a comprehensive range of thermal processing services, covering both standard and special process specifications. Our capabilities are backed by a fully equipped Metallurgical Laboratory, staffed with experienced Metallurgists and certified technicians who utilize state-of-the-art testing equipment to ensure full conformance to customer requirements and industry standards.

We are committed to delivering heat treat services that meet or exceed expectations for quality, cost, and delivery. This commitment is upheld through a continuous focus on improvement, innovation, and strict quality assurance, ensuring every customer receives reliable, high-performance results.

Plug Quenching

A process in which tooling plugs are inserted to critical areas of the part during the quenching process to limit the dimensional changes of the part such as a spline.

Gleason Die Quenching

A quench press is a machine that uses concentrated forces to hold an object as it is quenched. These types of quench facilities are used to quench large gears and other circular parts so that they remain circular.

Vacuum Heat Treating

Vacuum furnaces are used in a wide range of applications in both production industries and research laboratories. At temperatures below 1200 °C, a vacuum furnace is commonly used for the heat treatment of steel alloys. Many general heat-treating applications involve the hardening and tempering of a steel part to make it strong and tough through service. Hardening involves heating the steel to a predetermined temperature, then cooling it rapidly in water, oil or suitable medium.

Hardening - Atmosphere

Atmosphere – Martensitic transformation, more commonly known as quenching and tempering, is a hardening mechanism specific for steel. The steel must be heated to a temperature where the iron phase changes from ferrite into austenite.

Automated Gas Nitriding

In gas nitriding the donor is a nitrogen-rich gas, usually ammonia (NH3), which is why it is sometimes known as ammonia nitriding. When ammonia comes into contact with the heated work piece it dissociates into nitrogen and hydrogen. The nitrogen then diffuses onto the surface of the material creating a nitride layer.

Hardening - Neutral salt bath

Salt baths are used in a wide variety of heat treatment processes including neutral hardening, liquid carburizing, liquid nitriding, austempering, martempering and tempering. Parts are loaded into a pot of molten salt where they are heated by conduction, giving a very readily available source of heat. The core temperature of a part rises in temperature at approximately the same rate as its surface in a salt bath.

Gas Carburizing

Case hardening is specified by "hardness" and "case depth". The case depth can be specified in two ways: total case depth or effective case depth. The total case depth is the true depth of the case. For most alloys, the effective case depth is the depth of the case that has a hardness equivalent to HRC50; however, some alloys specify a different hardness (40-60 HRC) at effective case depth.

Services & Special Processes We Offer

  • Atmosphere Carburizing & Carbonitriding
    Case hardening processes to increase surface hardness and wear resistance.

  • Neutral Hardening
    Through-hardening in a neutral atmosphere for consistent hardness and strength.

  • Gas Nitriding &
    Low-temperature surface hardening for enhanced wear, fatigue, and corrosion resistance.

  • Vacuum Heat Treating
    Precision heat treating in a clean, controlled environment for distortion-sensitive components.

  • Cryogenic Treatment / Deep Freezing (-120°F and Below)
    Converts retained austenite to martensite, improving dimensional stability and performance.

  • Martempering
    Step-quenching process to reduce distortion and cracking in hardened steel.

  • Stress Relieving
    Reduces residual internal stresses from forming, machining, or welding operations.

  • Annealing
    Softens metal, refines microstructure, and enhances machinability or formability.

  • Normalizing
    Promotes uniform microstructure and mechanical properties throughout the part.

  • Precipitation Hardening (Aging)
    Increases strength and hardness of certain alloys through heat aging.

  • Tempering
    Adjusts hardness and toughness after quenching to meet specific mechanical requirements.

  • Straightening
    Precision correction of part distortion post-heat treat to meet dimensional tolerances.

  • Copper Plating
    Electroplated copper coating used as a standalone layer or as a base for additional coatings. Masking & Copper Stripping also.

  • Homogenizing
    High-temperature treatment to reduce chemical segregation and improve material uniformity.

  • Grit Media or Aluminum Oxide Blasting
    Surface cleaning and preparation using high-speed abrasive blasting.

  • Hot Oil Quenching Capabilities
    Quenching at elevated temperatures to control hardenability and minimize distortion.

  • Certified Metallurgical Lab Testing
    Full-service lab including hardness testing, microstructure analysis, and conformance validation.

  • X-Ray Diffraction (XRD)
    Retained austenite and residual stress testing (ISO/IEC 17025:2017 accredited).

  • Custom Racking & Fixturing
    Engineered solutions for delicate, high-value, or geometrically complex parts.