At Brighton Tru-Edge, we offer heat treatments in our oversized furnace to meet customers’ code requirements and needs. We utilize thermocouples attached to the heads to ensure proper heating of the material. Our computer-controlled furnaces are programmed for the specific needs of a piece to complete a heat treatment cycle. We then document the treatment on a heat chart.
We perform this treatment on material above the critical transformation temperature when required, either in the flat or after forming. For SA-516-70, we utilize a normalizing cycle of 1650F +/-50 for a half an hour per inch of thickness. This refines the grain structure of the material.
This heat treatment is performed to relieve work hardening stresses in the material. On cold-formed heads, the ASME requires some heads to be stress relieved when the fiber elongation exceeds 5%.
Stress relieving of SA-516-70 requires a controlled heating and cooling process, as detailed in UCS-56. It is held at 1,100F for one hour per inch of thickness. ASME Section VIII, Division I, UCS-79 (d) does provide for some exemptions.
& Nickel Alloys
This method of heating stainless and nickel alloys dissolves carbide. It is cooled at a fast enough rate to prevent the carbon from producing additional carbides, freezing the carbon in solution. This method is used to increase ductility and corrosive-resistant properties. We utilize solution anneals at 1950F +/-50, followed by water quenching for the following specifications:
- SA240 304/304L
- SA240 316/316L