• 9341 Penn Ave S, Bloomington, MN 55431
  • 800-447-3317

We stock and sell Biodur 108 in rod form.

BioDur 108 is a tough, non-magnetic material frequently used for medical purposes. BioDur 108 is hardened through cold working, a process in which metal is shaped while at its ambient temperature. This metal is nearly nickel free, cobalt free, and FDA approved for implantable medical devices. BioDur 108’s non-magnetic composition makes it MRI friendly, and its low nickel status makes it safer for metal sensitive individuals than other stainless steels. A few of BioDur 108’s medical uses include:

  • Bone plates
  • Bone screws
  • Hip and knee parts
  • Orthodontic appliances
  • High strength surgical instruments

BioDur 108’s high nitrogen and low nickel content gives it improved fatigue strength in comparison to nickel-containing alloys. It is a metal great for metal sensitive individuals and large-scale production alike.

Chemical Data, Mechanical Properties and Specifications for Biodur 108 ®

Chemical Range For Biodur 108 ®
Element Minimum Maximum
Carbon -- 0.08
Chromium 19.0 23.0
Iron 49.38 57.38
Manganese 21.00 24.00
Nickel -- 0.10
Nitrogen -- 0.90
Phosphorus -- 0.030
Silicon -- 0.75
Sulphur -- 0.010
Copperr -- 0.25
Molybdenum   1.50


Typical Mechanical Properties for Biodur 108 ®
Form Tensile Strength Yield Strength Elongation at Break
Annealed 135 ksi 88 ksi 49%


ASTM F2229
UNS S29108

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