MARTENSITIC STAINLESS STEELS
\mˌɑːtənsˈɪtɪk stˈe͡ɪnləs stˈiːlz], \mˌɑːtənsˈɪtɪk stˈeɪnləs stˈiːlz], \m_ˌɑː_t_ə_n_s_ˈɪ_t_ɪ_k s_t_ˈeɪ_n_l_ə_s s_t_ˈiː_l_z]\
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Steels that contain very little nickel or other alloying metal, yet a high amount of chromium. Heat treatment of these steels hardens them and makes them stronger but also more brittle. they are used mainly for surgical instruments and in oil industry, they are designated as 400 series. Their orthorhombic molecular structure was discovered by German researcher Adolf Martens in 1890.
By Henry Campbell Black
Word of the day
basidiomycota
- comprises fungi bearing the spores on basidium: Gasteromycetes (puffballs); Tiliomycetes (comprising orders Ustilaginales (smuts) and Uredinales (rusts)); Hymenomycetes (mushrooms; toadstools; agarics; bracket fungi); in some classification systems considered a division of kingdom comprises fungi bearing spores on a basidium; includes Gasteromycetes (puffballs) Tiliomycetes comprising the orders Ustilaginales (smuts) and Uredinales (rusts) Hymenomycetes (mushrooms, toadstools, agarics bracket fungi).
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