Ferro Chrome Nitride Spec: Cr 60-65%min, N 8-10%, C ... -0.1% Size: 0-2mm, 10-50mm, or at customer's option Nitrided Ferro ChromeSpec:1. Cr 60-65%min, N ... .1%, Si 1.5-2.5%, P 0.03%max, S 0.04%max.2. Cr 60-65%min, N 8 ... .06%, Si 1.5-2.5%, P 0.03%max, S 0.04%max.3. Cr 60-65%min, N 8 ... 0.03%, Si 1.0%max, P 0.03%max, S 0.04%max.Size: 0-2mm, 10-50mm or customer ...