Piercing Jewelry Material Guide: ASTM F136 Titanium & More
The safest material for a new piercing is ASTM F136 implant-grade titanium. It is nickel-free (≤0.05% nickel), certified under ISO 5832-3 for permanent surgical implants, and recommended by the Association of Professional Piercers (APP) for initial piercings. ASTM F138 (316LVM) surgical steel is an acceptable alternative when vacuum arc remelted to implant-grade standards. 925 sterling silver and 14K solid gold are safe for healed piercings only.
Complete Piercing Jewelry Material Guide
Choosing the right material for your piercing jewelry isn't about preference — it's about biology. Your body treats a piercing as an open wound for weeks or months after the procedure. The metal you put in that wound determines whether you heal cleanly or develop irritation, allergic reactions, or infection. This guide covers every material used in quality piercing jewelry, ranked by safety for initial piercings.
Material Comparison Table
| Material | ASTM Standard | Nickel Content | Safe for Healing? | Best For |
|---|---|---|---|---|
| Implant-Grade Titanium | ASTM F136 | Nickel-free (≤0.05%) | ✅ Yes | All piercings, especially sensitive skin |
| Implant-Grade Surgical Steel | ASTM F138 (316LVM) | 13.0–15.0% | ✅ Yes (if nickel-tolerant) | Budget-friendly implant-grade option |
| Niobium | ASTM B392 | Nickel-free | ✅ Yes | Titanium alternative, anodizable to black |
| 14K Solid Gold | — | Nickel-free alloy | ⚠️ Healed only | Premium aesthetic, healed piercings |
| 925 Sterling Silver | — | Nickel-free alloy | ⚠️ Healed only | Short-term wear in healed piercings |
| Commercial "Surgical Steel" | None | 10.0–15.0% (varies) | ❌ No | Not recommended for any piercing |
| Gold-Plated / Gold-Filled | — | Unknown base metal | ❌ No | Not recommended — plating wears off |
Implant-Grade Titanium (ASTM F136)
ASTM F136 (Ti-6Al-4V ELI) is the gold standard for piercing jewelry. The "ELI" stands for Extra Low Interstitials — oxygen is limited to ≤0.13%, which prevents the material from becoming brittle over time. This is the exact same specification used for hip replacements, dental implants, and spinal fusion cages. It is nickel-free at the specification level, not just "low nickel."
Key properties: Hypoallergenic, lightweight (40% lighter than steel), MRI-compatible, can be anodized to dozens of colors without coatings or plating.
Piercova uses: Exclusively ASTM F136 titanium from ISO 13485-certified mills. Every batch has mill test certificates traceable to the heat number.
Implant-Grade Surgical Steel (ASTM F138 / 316LVM)
ASTM F138 316LVM is a specific medical-grade stainless steel. The "VM" stands for Vacuum Melted — the alloy undergoes vacuum arc remelting (VAR), which eliminates microscopic non-metallic inclusions that cause corrosion and fatigue failure in commercial stainless steel. This makes it suitable for permanent surgical implants including bone plates, fracture fixation screws, and orthopedic devices.
Important distinction: ASTM F138 316LVM contains 13.0–15.0% nickel — higher than standard 316L (10.0–14.0%). The nickel is bound within the austenitic crystal structure and does not leach under normal conditions, but people with severe nickel allergies should choose titanium instead. F138 meets ISO 5832-1 and ISO 10993 biocompatibility standards for permanent surgical implants.
Warning about "surgical steel": Without an ASTM specification (F138), the term "surgical steel" is an unregulated marketing label. It can refer to anything from 304 stainless to unknown alloys. If a product only says "surgical steel" without citing ASTM F138 or ISO 5832-1, assume it is not implant-grade.
14K Solid Gold
14K solid gold is 58.3% pure gold alloyed with metals that do not include nickel. Solid gold means the entire piece is gold alloy through and through — not a thin layer over base metal. It is safe for healed piercings and is the preferred premium material for everyday wear. Quality piercing-grade gold should be nickel-free and alloyed with palladium, copper, and silver.
What to avoid: Gold-plated (microscopic layer that wears off in weeks), gold-filled (thicker but still a coating), and gold vermeil (sterling silver with gold plating). All three expose your piercing to base metals once the surface wears through.
925 Sterling Silver
925 sterling silver is 92.5% pure silver with 7.5% copper for strength. It is nickel-free when made to proper specification. However, silver can tarnish and react with body fluids, so it is recommended for short-term wear in fully healed piercings only — never for initial piercings or long-term continuous wear.
Piercova uses: Nickel-free sterling silver tested for nickel release under EN1811 standards.
Materials to Avoid Entirely
- Unspecified "surgical steel": No ASTM number = no quality control. Could be anything.
- Gold-plated / gold-filled: The base metal underneath is unknown and will be exposed.
- Acrylic / plastic / bioplast: Porous surface harbors bacteria; not suitable for long-term wear.
- Costume / mystery metal: Often contains lead, cadmium, and high-nickel alloys.
Frequently Asked Questions
Which material is best for a new piercing? ASTM F136 implant-grade titanium. Nickel-free, lightweight, and the material most recommended by professional piercers worldwide.
Can I wear surgical steel in a new piercing? Only if it specifically cites ASTM F138 (316LVM). Regular "surgical steel" without this specification is not safe for piercings at any stage.
Is titanium better than surgical steel? For initial piercings and anyone with nickel sensitivity, yes — titanium is nickel-free and lighter. For healed piercings in non-sensitive individuals, ASTM F138 steel is a safe and more affordable option.
What does "implant-grade" actually mean? It means the material meets ASTM or ISO standards for permanent surgical implants — with documented traceability, certified chemical composition, and verified biocompatibility. It is not a marketing term; it is a regulatory classification.