This steel is used for mechanical structures. To give it toughness, it is quenched and tempered to create a tempered martensite or troostite matrix with a tensile strength of around 100 kgf/mm2. The alloying components are set at 0.13-0.50% carbon, 0.9-1.2% chromium, and 0.15-0.45% molybdenum. It is also used for carburizing as a type of case-hardening steel. Because it has a certain degree of heat resistance, it is often used for pipes and valves for high-pressure steam, oil, and gas. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
機械構造用鋼として使用される鋼である。強靱性を付与するために,焼入れ・焼戻しにより,焼戻しマルテンサイトまたはトルースタイトのマトリックスに調質し,引張強さ100kgf/mm2内外にして使用する。合金成分としては炭素0.13~0.50%,クロム0.9~1.2%,モリブデン0.15~0.45%の範囲で定められている。肌焼鋼の一種として浸炭用にも使用される。ある程度の耐熱性を有するので高圧蒸気や石油・ガス用の管やバルブに使用されることも多い。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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