1.4335 is a low-carbon austenitic stainless steel grade with the addition of chromium, nickel, and molybdenum.
1.4435 is a grade that is a more alloyed variant of 1.4404, and it is used as a medical-grade material due to its excellent corrosion resistance. The increased nickel content enhances its formability, while the increased molybdenum content improves its corrosion resistance.