The release rate of nickel in stainless steel 316L (/% ：0.023C

17.57Cr

11.23Ni

2.03Mo) processed with 11 kinds of shaping and surface treatment methods is measured by artificial sweat soaking method and flame atomic absorption spectroscopy. Test results show that the stainless steel 316L cold rolled with 50% reductioti

solid solution treated at 1050 ℃ and mirror polished is only 0.02 μg/cm

2

/week

finely to meet the European Union new standard EN1811: 2011. But the release rate of nickel is directly affected by shaping process (cold rolled state

cast state)

surface treatment method ( roughness factor) and sampling method (longitudinal

cross section)

which may increase by 3 to 26 times.