14 钢铁材料中所含其它化学元素对性能有什么影响? 答:碳,是钢铁材料中最重要的元素,含碳量小于2％的称为钢,超过2％的称为铸铁。普通钢的强度、硬度、脆性、抗磨性随含碳量的增加而增加,而塑性、韧性、可焊性则随含碳量的增加而减小。 硅,能增加钢的强度、弹性和硬度,但降低塑性和韧性,且使钢具有耐 14 What is the effect of other chemical elements contained in the steel material on performance? A: Carbon is the most important element in steel, with less than 2% carbon being called steel and more than 2% being called cast iron. Ordinary steel strength, hardness, brittleness, abrasion resistance increases with the carbon content increases, while the plasticity, toughness, solderability with the increase of carbon content decreases. Silicon, can increase the strength, elasticity and hardness of steel, but reduce the plasticity and toughness, and the steel has resistance