Gauge Lock Rail Clip for South American Rail Product name Din Rail Mounting Clip Standard DIN17221,BS970,GB/T1222 Hardness 44-48HRC Material 60Si2Mn,60Si2Cr,55SiMn,38Si7 MOQ 1000pcs Surface Plain,Black,Zinc plated,HDG,et Quality Control 100%inspection Fatigue Life 5 Million Times without Crack Certificate ISO9001 Application Area Railway, Metro, etc. Packaging & delivery Package Type: plastic bags, box, carton, pallet or according to your requirements Product Description Din Rail Mounting Clip GL Railway Steel Rail Clip Name Din Rail Mounting Clip Type E clip (e1809, e2006,e2007,e2009,etc) Skl clip (skl1,skl3,skl12,skl14) Or the type by customers' drawings Material 60Si2Mn 60Si2Cr 55Si2Mn 38Si7 Chemical composition(%) C:0.56-0.64, Mn:0.60-0.90, Si:1.60-2.00, Cr:â?¤0.35, P:â?¤0.03, S:â?¤0.03 C:0.56-0.64, Mn:0.40-0.70, Si:1.40-1.80, Cr:0.70-1.00, P:â?¤0.03, S:â?¤0.03 C:0.52-0.60,�  Mn:0.60-0.90, � Si:1.50-2.00, Cr:â?¤0.35 , P:â?¤0.03, S:â?¤0.03 C:0.35-0.42, Mn:0.50-0.80, Si:1.50-1.80, P:â?¤0.03, S:â?¤0.03 Hardness For e clip: 44-48HRC For skl clip: 42-47HRC Fatigue life for Dia.18 is 3 millions cycles without breaking Surface plain (oiled), Oxide black, color painting, HDG, Zinc Plating... Standard refers DIN17221, BS970, GB/T1222