40Cr钢管调质以后的硬度大概在HRC32-36之间,也就是说大概HB301-340之间.

中国彩票40Cr—830-860℃YOUCUI—>55HRC

中国彩票150℃HUIHUO—55HRC

中国彩票200℃HUIHUO—53HRC

300℃HUIHUO—51HRC

400℃HUIHUO—43HRC

中国彩票500℃HUIHUO—34HRC

550℃HUIHUO—32HRC

中国彩票600℃HUIHUO—28HRC

中国彩票650℃HUIHUO—24HRC

40CrTEXING：

中国彩票ZHONGTANDIAOZHIGANG，LENGDUNMOJUGANG。GAIGANGJIAGESHIZHONG，JIAGONGRONGYI，JINGSHIDANGDERECHULIYIHOUKEHUODEYIDINGDERENXING、SUXINGHENAIMOXING。ZHENGHUOKECUJINZUZHIQIUHUA，GAIJINYINGDUXIAOYU160HBSMAOPIDEQIEXUEXINGNENG。ZAIWENDU550~570℃JINXINGHUIHUO，GAIGANGJUYOUZUIJIADEZONGHELIXUEXINGNENG。GAIGANGDECUITOUXINGGAOYU45GANG，SHIHEYUGAOPINCUIHUO，HUOYANCUIHUODENGBIAOMIANYINGHUACHULIDENG。