Secondary Operations

From micro-structure analysis to our state-of-the-art measuring devices, we provide the maximum in precision, accuracy, and repeatability in the heat treatment process. With unequaled quality assurance, we provide consistent metallurgical structure and hardness for the optimal performance of your tooling.

Straight & True

Century Sun provides accurate and dependable straightening services. Quality equipment and accurate, detailed measurements, as well as the skill and training of our personnel, make our straightening facilities reliable and dependable. We are a world-class facility because we take pride in getting all the details right.


  • Century Sun operates 33 straightening presses and can handle parts up to 14' in diameter and 110" in length depending on material type and tool geometry.
  • Both automatic stroke-controlled straightening presses and manually operated equipment is employed to meet customer specifications on dimensional tolerance.
  • Vertically integrated straightening procedures ensure both straightness and flatness for final machining operations.

Blasting & Cleaning

Detailed hardness inspections, special blasting, and protective packaging of finished parts are among the final steps taken before shipments leave our facility. We are always ready to provide the highest quality, fast and convenient service, and competitive prices.

Materials Overview

Century Sun can process and inspect all tool steels, alloy grades, and stainless steels such as: A2, D2, S7, H11, H13, O1, 4140, 8620, CPM 3V, 9V, 10V, M2, M4, M42, 420SS, 440C, 17-4, and all specialty grade materials.


  • Automated and manual blasting equipment ensures meeting customer surface requirements on parts requiring final machining.
  • Several different types of media are used in order to meet customer finish requirements.


Century Sun Metal Treating can provide notarized thermal processes certifications upon request, and these may include full documentation of the material, load set up pictures, furnace charts or microstructure analysis to verify proper heat treatment response or case depth requirements.

  • ISO 9001 registered
  • NADCAP accredited
  • AS9100 certified
  • AMS 2750
  • AMS 2759
  • MIL-H-6875


Magnetic Particle Inspection is a non-destructive testing process used for detecting surface and slightly subsurface discontinuities in ferroelectric materials.