Tool & Die

ThermTech processes over 50 orders of tooling a day whether it be for Vacuum hardening, Final Stress Temper, Quench and Temper or Gas Nitriding.  Look under the Schedule Tab to see when we run the more popular processes and materials.

Image of a vacuum annealed die part.

Vacuum Annealing Services for Tool & Die

Reasons for needing a vacuum anneal can range from a machined detail that was missed prior to hardening and weld repair of the tool.
Vacuum Solution annealing is ideal for Inconel or Hastelloy steels.

Vacuum Solution Annealing

Vacuum solution annealing insures the parts are in the correct condition for subsequent age hardening or being in the proper phase for optimum corrosion resistance.
ThermTech is capable of tool steel hardening treatments for many brand name tool steels.

Tool Steel Heat Treatment

One of our core competencies is vacuum hardening of tool & die jobs. We have 5 vacuum furnaces that are capable of hardening several grades of tool steels such as A-2, A-6, A-8, A-10, S-7, D-2, H-11, H-13, M-2, M-4, M-42, T-15, and DC-53.
ThermTech Oil quench hardening and Austenizing processes as part of our Tool Steel Heat Treating services.

Stainless Steel Heat Treatment

Several tool steels require oil quenching to either fully transform their microstructure to a fully martensitic phase or to comply with an industry or company's technical specification.
Vacuum stress relieving processes promote uniformity in most injection dies and molds

Vacuum Stress Relieving

A vacuum stress relief of molds allows a more uniform looking textured surface during subsequent usage. We can handle a die or mold up to 36" wide x 32" high x 72" long with a total piece weight of 10,000 pounds.
ThermTech offers molten salt Marquenching to limit the shock of the quench on your parts

Marquench Hardening

Several tool steels such as A-10, A-6, & S-5 may require liquid quenching for the parts to achieve full hardness.
Thermtech has the capability to Oil quench harden large parts along with smaller ones.

Oil Quench Hardening

Some Tool and Die materials like S-5, 52100, O-1, & O-6 require oil quench hardening. ThermTech has several furnaces capable of hardening these materials with the largest being 36" wide x 42" high x 72" long.
It's difficult for W-1 and L-6 materials to achieve their hardness potential without water-quench hardening

Water Quench Hardening

Some tool and die parts are made from low alloy tool steels like W-1 & L-6 materials. These tool steels require water quench hardening in order to achieve full hardness.
Thermtech's deep freezing treatments are seamlessly integrated with our other hardening processes

Cryogenic Heat Treatment

To transform the retained austenite found in these materials after hardening it is typically necessary to deep freeze or cryo-treat them to -300F below zero.
Gas Nitriding steel can also improve the lubricity of many kinds of parts

Gas Nitriding - Tool & Die

Gas Nitriding is low temperature diffusion heat-treatment process that can increase the lubricity, corrosion resistance, and surface hardness of certain tools and dies run with this process.
Our carbon restoration treatment can restore surface carbon lost during weld repair

Carbon Restoration

Often several tool steels supplied in the as-cast conditions definitely need a carbon restoration due to the high carbon content of those materials and the natural de-carburization environments of the casting processes.
ThermTech's Jig Tempering treatment designed to successfully straighten parts post-hardening.

Jig Tempering

To straighten out a material post-hardening when they are at their most brittle we employ a process involved fixturing the part during the tempering operation where the material has more ductility and takes a set to a straighter/flatter configuration.
ThermTech's straightening process uses mechanical presses combined with localized heat to avoid cracking


Tool & Die products shaped in cylindrical form require straightening by mechanically pressing the parts with some localized heat put on an area to prevent gross cracking due to the brittleness of the material involved.
Tumble blasting is also available for parts that due not posses easily damaged critical edges.


Should the tooling require blasting we typically employ a hand-blast operation to make sure care in handling is used to avoid damaging critical edges and over-blasting intricate details on the tool.

Final Stress Tempering

Final Stress Tempering is performed to remove machining stresses before a final machining operation to tight tolerances.