借助于冶金分析方法，对穿甲后的引进和国产两种１２．７ｍｍ穿、燃、爆弹的钢壳和弹芯进行了综合材质分析，分析结果表明：引进弹钢壳为热轧退火态的硫脆化易削钢，但比一般国内产品组织要细；国产弹钢壳为Ｂ２钢，由于挤压成型时钢壳组织变形量不一致，所以再结晶退火后组织不均匀；引进弹弹芯与国产弹弹芯成分相近，但工艺（包括制粉、烧结、热处理等）有差异，故组织、性能不同。 With the aid of metallurgical analysis method, the comprehensive material analysis was conducted on the introduced and homemade 12.7mm wear-and-tear, explosive and explosive steel shells and slug cores after armor piercing. The analysis results show that the introduction of steel shells is hot-rolled and annealed Of the sulfur embrittlement easy to cut steel, but smaller than the average domestic product organization; domestic steel shells for the B2 steel, due to extrusion deformation of the steel body is inconsistent, so recrystallization annealing organization uneven; the introduction of projectile core Similar to the composition of the domestic projectile core, but the process (including milling, sintering, heat treatment, etc.) are different, so the organization, performance is different.