作业帮中碳钢 硬度 questionSorry cant type Chinese in this computer.I got a question comparing the hardness of alloy steel 1045 and 4140.From the published data I can see that 4140 is harder.I just wanna know why.is it related to the composition?like w
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中碳钢 硬度 questionSorry cant type Chinese in this computer.I got a question comparing the hardness of alloy steel 1045 and 4140.From the published data I can see that 4140 is harder.I just wanna know why.is it related to the composition?like w
中碳钢 硬度 question
Sorry cant type Chinese in this computer.I got a question comparing the hardness of alloy steel 1045 and 4140.From the published data I can see that 4140 is harder.I just wanna know why.is it related to the composition?like weight percent of carbon.
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thanks for 才过正午十三点 but when I compare 1045 and 4140,1045 has a larger carbon proportion but actually its hardness is less than the 4140.why?anyone help me.
中碳钢 硬度 questionSorry cant type Chinese in this computer.I got a question comparing the hardness of alloy steel 1045 and 4140.From the published data I can see that 4140 is harder.I just wanna know why.is it related to the composition?like w
对钢材来讲,含碳量越高,强度、硬度越大,塑性、韧性越差
对不起倾斜式中在这台计算机。我有一个问题比较了1045和4140合金钢材硬度。从公布的数据，我可以看到，4140更难。我只是想知道为什么。是它涉及到组成？如重量的百分之碳。欢呼