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Carpenter Technology Corp. has developed a new ultrahigh-strength steel (UHSS) alloy that is a lower cost alternative to many cobalt-containing precipitation hardenable alloys. Temper Tough alloy is an air-melted, cobalt-free quench and tempered alloy that has a unique combination of high strength and high toughness attributes that may allow designers and engineers to achieve an extended cycle life where components are under high loads with constant stress of intense, repetitive motion.
This alloy is a readily available, lower cost alternative to cobalt-containing precipitation hardenable alloys for a variety of general purpose tooling, industrial and automotive applications, especially those in which designers may be seeking to lighten the weight and increase the longevity of their products.
Temper Tough alloy is able to attain a typical strength of 290 ksi ultimate tensile strength (UTS). Temper Tough has also demonstrated superior fatigue resistance properties (axial-axial) of 120 ksi (827 MPa) compared to traditional quench-and-temper alloy steels averaging 79-85 ksi (545-586 MPa).
The attributes of Temper Tough alloy make it a candidate for applications in high-demand crank cases, drive trains, power trains, structural members, suspensions, and industrial tooling, especially when designers are looking for affordable solutions to reduce the weight of parts and/or components without sacrificing performance.
Related Glossary Terms
- alloy steels
alloy steels
Steel containing specified quantities of alloying elements (other than carbon and the commonly accepted amounts of manganese, sulfur and phosphorus) added to cause changes in the metal’s mechanical and/or physical properties. Principal alloying elements are nickel, chromium, molybdenum and silicon. Some grades of alloy steels contain one or more of these elements: vanadium, boron, lead and copper.
- alloys
alloys
Substances having metallic properties and being composed of two or more chemical elements of which at least one is a metal.
- fatigue
fatigue
Phenomenon leading to fracture under repeated or fluctuating stresses having a maximum value less than the tensile strength of the material. Fatigue fractures are progressive, beginning as minute cracks that grow under the action of the fluctuating stress.
- fatigue resistance
fatigue resistance
Ability of a tool or component to be flexed repeatedly without cracking. Important for bandsaw-blade backing.
- tensile strength
tensile strength
In tensile testing, the ratio of maximum load to original cross-sectional area. Also called ultimate strength. Compare with yield strength.
