BioDur® 734 Stainless

BioDur® 734 stainless is a nitrogen-strengthened, austenitic stainless steel. The alloy exhibits improved tensile strength, impact strength, fatigue strength, and crevice and pitting corrosion resistance over standard BioDur® 316LS. The microstructural integrity and cleanness of this alloy is insured through electro-slag remelting (ESR). The alloy is non-magnetic and is essentially free of ferrite. For a nickel-free alternative, BioDur 108 offers higher strength and corrosion resistance compared to both BioDur® 316LS and BioDur® 734.

Applications include implantable orthopedic parts such as bone plates, bone screws, and hip and knee components. These components are typically fabricated by forging and machining. The chemistry of BioDur® 734 meets the recently implemented EU MDR regulatory labeling threshold of less than 0.10% cobalt by weight. Devices made from this alloy should not need to be labeled as containing a potential CMR (carcinogenic, mutagenic and reprotoxin) element.