Stress Relieving Hardening & Tempering is a combined heat treatment process used to eliminate internal stresses caused by machining, welding, or cold working. The process begins with controlled heating of the material followed by hardening to increase strength. It is then tempered at a lower temperature to achieve improved toughness and stability. This method enhances dimensional accuracy, reduces distortion risk, and ensures that metal components can perform reliably under mechanical load or thermal cycling.
Hardening & Tempering are essential heat treatment processes used to improve the mechanical properties of steel and other alloys. Hardening involves heating the metal to a specific temperature and then rapidly cooling it (quenching), which increases hardness and strength. However, this also makes the material more brittle. To balance hardness with toughness, the metal is then tempered — reheated to a lower temperature and cooled again — to reduce internal stresses and improve ductility. This process ensures the component can withstand both wear and impact, making it ideal for tools, automotive parts, and high-stress machinery.
