ASTM F138 Implant-Grade 316L Surgical Steel

ASTM F138 (316LVM) — As of July 2026

Surgical-grade stainless steel refined for implant use — the industry workhorse

Surgical-grade stainless steel refined for implant use — the industry workhorse ASTM F138 (316LVM) — a body jewelry material that is implant-grade but contains nickel in its alloy structure. 13–15% nickel — bound within austenitic structure, minimal ion release. Not recommended for known nickel allergies.. Tensile strength Tensile strength ≥490 MPa. Excellent corrosion resistance in chloride environments. Maintains mirror polish for years..

ASTM F138 is a vacuum-melted (316LVM) variant of 316L stainless steel specifically formulated for surgical implants. The vacuum melting process significantly reduces non-metallic inclusions, resulting in a cleaner, more homogeneous material with superior corrosion resistance. Unlike standard 316L steel used in cookware or construction, ASTM F138 is regulated for medical implant use and contains lower carbon content (max 0.030%) to prevent intergranular corrosion. While it does contain nickel (13-15%), the nickel is tightly bound within the austenitic crystal structure, meaning it does not leach into the skin under normal conditions.

How biocompatible is this material?

ISO 10993-1 certified for medical device biocompatibility. Used in bone screws, temporary fixation devices, and orthodontic brackets.

Does this material contain nickel?

13–15% nickel — bound within austenitic structure, minimal ion release. Not recommended for known nickel allergies.

How durable is this material?

Tensile strength ≥490 MPa. Excellent corrosion resistance in chloride environments. Maintains mirror polish for years.

Which piercings is this material best for?

  • Healed piercings
  • Budget-conscious quality
  • Body jewelry with complex machining
  • Threaded styles and intricate designs

What finishes are available?

  • Mirror Polish Silver
  • PVD Gold
  • PVD Rose Gold
  • PVD Black

How do I care for this material?

  • Wipe with soft microfiber cloth
  • Avoid chlorine and salt water immersion
  • PVD coatings require gentle handling
Contains Nickel — Not Recommended for Nickel Allergies

This material contains nickel in its alloy structure. While it is implant-grade and the nickel is chemically bound, individuals with known nickel allergies should choose titanium or gold instead.