C1015碳素钢的其塑性、韧性高，但强度、硬度较低，锻造、焊接和冷冲压性能良好，冷变形塑性高，但切削加工时不易得到光洁的表面。用于制造受力不大、韧性要求高的零件和渗碳件，紧固件和冲模锻件以及不经热处理的低负荷零件。
C1018钢材高锰低碳渗透钢,合金结构钢广泛用于活塞、螺钉、传动轴、机床,弹簧,制造注射模的推板、锁楔、凹模套、复位杆、直径较大的推杆、型芯固定板等结构上.
C1020该钢属于优质低碳碳素钢，冷挤压、渗碳淬硬钢。该钢强度低，韧性、塑性和焊接性均好。抗拉强度为253-500MPa，伸长率≥24%。
C1035是一种优质碳素结构钢，有良好的塑性和适当的强度，工艺性能较好，焊接性能尚可，大多在正火状态和调质状态下使用。广泛用于制造各种锻件和热压件、冷拉和顶锻钢材，无缝钢管、机械制造中的零件，如曲轴、转轴、轴销、杠杆、连杆、横梁、套筒、轮圈、垫圈以及螺钉、螺母等。
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