YD327A-4耐磨药芯焊丝；                      规格；1.2-1.6-2.0-2.5-3.0-4.0，                                                    化学成分；C0.35-0.55,Cr4.8-6.2，W0.90-2.0，Mo0.80-1.40，Mn1.2-1.9，Si0.4-0.9，V0.9-1.5，                                    硬度≥50  。                                                                    适用范围；钢轧辊，热轧工作辊，支撑辊，连铸机辊，校直辊的堆焊。