Air-Hardening

Air-Hardening

 

(Russian samozakalivanie, “self-hardening”), in metallurgy, the acquisition by certain metallic alloys of properties characteristic of their hardened state as a result of cooling in the air after being heated to the hardening temperature. Air-hardening is characteristic of high-alloy steels with a high stability of supercooled austenite in the temperature interval between the critical points and the beginning of martensite transformation. It is also characteristic of some magnesium and other alloys.

References in periodicals archive ?
com Seedling Baby's Handprint in a Tin THIS kit allows parents to record a memory of baby's little foot or hand forever, using the soft air-hardening clay, acrylic paint, and paint brush included in the kit.
They are air-hardening binding materials such as building gypsum and lime, cement concrete, building mortar, wall and roof materials, construction steel, wood, waterproof materials such as asphalt, building plastic, heat-insulating and sound-absorbing materials, and finishing materials.
Grasello di Calse, based on air-hardening lime, provides a high-quality decorative gloss finish in soft shades that vary depending on the application technique.
SARGENT ART announces that its Sculpt*it[TM] Colors Air-Hardening Sculpting Materials are now available in white and five bright new colors (red, blue, green, violet and yellow).
The local limestone is the perfect building material, easy to quarry, air-hardening and long lasting and though some people may grumble about change, it is worth remembering that it was change that ensured the survival of so much of the Cotswolds' period architecture, namely agricultural decline.
Air-hardening steels cool more uniformly, so distortion and risk of cracking are lower.
TD is effective with air-hardening cold and hot working die steels such as A2, D2, and H13, high speed steels, and cemented carbides.
At one time, they were the most used, but as service requirements became more critical, there was a significant shift to oil-hardening and air-hardening grades to minimize distortion after heat treating.
The column on the left contains steel names beginning with "air," signifying they are air-hardening grades.