SAE AMS5897B
SAE AMS5897B Steel, Corrosion and Heat-Resistant, Seamless or Welded Hydraulic Tubing 18.5Cr - 11Ni - 0.80Cb (Nb) (SAE 30347) Solution Heat Treated and Cold Drawn, 1/8 Hard Temper
standard by SAE International, 02/09/2012
standard by SAE International, 02/09/2012