Some articles on air hardening, air, hardening:
... The first air hardening grade tool steel was mushet steel, which was known as air-hardening steel at the time ... Modern air-hardening steels are characterized by low distortion during heat treatment because of their high-chromium content ... They also harden in air because they have less alloyants than oil-hardening grades ...
Famous quotes containing the words hardening and/or air:
“With sixty staring me in the face, I have developed inflammation of the sentence structure and definite hardening of the paragraphs.”
—James Thurber (18941961)
“Lovely the woods, waters, meadows, combes, vales,
All the air things wear that build this world of Wales.”
—Gerard Manley Hopkins (18441889)