| 单词 | red hardness |
| 释义 | > as lemmasred hardness red hardness n. Metallurgy the property, exhibited by some steels used for machine tools, of retaining a high degree of hardness up to a low red heat. ΘΚΠ the world > matter > constitution of matter > hardness > [noun] > specific red hardness1907 indentation hardness1918 microhardness1921 Shore hardness1937 1907 Trans. Amer. Soc. Mech. Engin. 28 223 This new property in high speed tools has been very appropriately named ‘red hardness’, because the tool maintains its cutting edge sufficiently sharp and hard to cut steel even after its nose is red hot. 1945 C. E. Balleisen Princ. Firearms x. 100 The property of red hardness is the one sought. 1999 Materials Characterizat. 43 41/1 The special features of these [high-speed] steels are: high hardness, strength and red hardness, combined with a correspondingly high toughness. < as lemmas |
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