稀土合金耐磨弯头，又名合金耐磨弯头，常见质料为jm7、zg40crnimomnsire等。the rare earth alloy wear-resistant elbow, also known as alloy wear-resistant elbow, common material for jm7, zg40crnimomnsire, etc.
我国对稀土合金耐磨弯头的技术指标：① 商标： zg40crnimomnsire ② 硬度：hrc≥40 ③ 冲击韧性：ａk≥14j/cm2 ④ 抗拉强度：os≥700mpa。磨耗是高锰钢的1／3左右，运用寿命是高锰钢的3倍以上。