Grade 316Ti stainless steel has been traditionally specified by German engineers and users with the Werkstoff number 1.4571. The former steel grade in the UK was 320S31.
This grade is essentially a standard carbon 316 type with titanium stabilisation and is similar in principle to the titanium stabilisation of the 304 (1.4301) type to produce 321 (1.4541). The addition of titanium is made to reduce the risk of intergranular corrosion (IC) following heating in the temperature range 425-815C.