we are the direct manufacturer of FeV,we can supply the FeV as per the buyers' requirements,any questions just do tell us! grade composition/%VCSiPSAlMn min maxFeV40-A40.00.752.00.100.061.0 FeV40-B40.01.003.00.200.101.5 FeV50-A50.00.402.00.070.040.50.50FeV50-B50.00.752.50.100.050.80.50FeV75-A75.00.201.00.050.042.00.50FeV75-B75.00.302.00.100.053.00.50