ASTM F136 Titanium: What the Specification Means

Piercing Academy → Materials & Quality

Learn what ASTM F136 covers, how a test report should be read and which questions still need separate evidence before choosing piercing jewelry.

Quick answer

ASTM F136 is a material specification for wrought annealed Ti-6Al-4V ELI titanium alloy used in the manufacture of surgical implants. It covers chemical, mechanical and metallurgical requirements for that material. Oumo Jewelry works closely with its manufacturing partners and uses third-party random-sample testing as part of ongoing supplier verification and quality control. We select samples from the titanium jewelry we sell, supplied by those partners. Our current SGS reports document an ASTM F136 chemical-composition result for a tested finished titanium jewelry sample and lead/cadmium results for a separately tested sample. We publish the original reports so customers can see the evidence directly.

General education only: A material specification is one part of jewelry selection. It does not determine personal allergy risk, anatomy, fit, healing readiness or whether a finished design is appropriate for a particular piercing. Ask a qualified professional piercer about initial jewelry, placement and fit. Seek medical advice for a suspected allergic reaction, infection or other health concern.

In this guide

• Understand what ASTM F136 is
• Separate the material standard from a finished jewelry claim
• Know what different evidence documents can show
• Read Oumo Jewelry's composition report
• Understand the 0.14% oxygen result
• Read Oumo Jewelry's lead and cadmium report
• Use a practical report-reading checklist
• Check the rest of the finished jewelry
• Frequently asked questions

Understand what ASTM F136 is

ASTM F136 is the shortened designation for a specification published by ASTM International. Its full title identifies a wrought titanium-6aluminum-4vanadium ELI alloy for surgical implant applications, also identified as UNS R56401.

That name contains several useful distinctions:

• Ti-6Al-4V identifies a titanium alloy containing controlled amounts of aluminum and vanadium, rather than commercially pure titanium.
• ELI means extra low interstitial. Elements such as oxygen, nitrogen, carbon and hydrogen are controlled because they can affect the material's properties.
• Wrought and annealed describe the material condition and processing scope covered by the specification.
• For surgical implant applications describes the standard's intended material use. It does not turn every object made from the alloy into a certified surgical implant.

The official ASTM summary says the specification addresses chemical, mechanical and metallurgical requirements. It covers material forms such as strip, sheet, plate, bar, forging bar and wire. Those categories matter because ASTM F136 is fundamentally a specification for the alloy and its supplied material form—not a complete design standard for a finished labret, hoop, setting or closure.

The edition matters

A standard designation should be read with its edition. ASTM listed F136-26 as the active edition when this guide's sources were checked on September 8, 2026. Oumo Jewelry's composition report, dated April 30, 2026, states that it evaluated the submitted sample against ASTM F136-13 (Reapproved 2021)e1.

That distinction does not automatically erase a historical test result. It means the claim must name the edition actually used, and a qualified material/testing reviewer should compare editions before anyone describes an older report as demonstrating compliance with the current edition.

Separate the material standard from a finished jewelry claim

The phrase ASTM F136 titanium answers a material question. Customers still need answers about the evidence connection and the finished piece.

Question	What ASTM F136 can contribute	What still needs separate evidence or assessment
What alloy is being claimed?	It identifies wrought Ti-6Al-4V ELI within the specification's requirements.	Documentation must connect the claimed material to the supplied stock, batch, sample or product.
Does a submitted sample have the expected chemistry?	A suitable composition test can compare measured elements with the cited edition's requirements.	The report must identify the sample, method, results, limits and decision rule.
Is the complete finished piece well made?	The alloy specification is relevant to the metal.	Surface finish, burrs, polish, dimensions, closure, setting, coating and assembly require their own quality controls.
Will it fit this piercing?	The standard does not answer fit.	A qualified piercer must consider anatomy, placement, gauge, length or diameter, angle and healing state.
Will no one react to it?	The standard does not provide a universal allergy guarantee.	Individual history, the complete product construction and any relevant content or release testing matter.

This is why meets ASTM F136 should not be expanded into perfect for everyone, allergy-proof, every product is certified or the finished jewelry is medically approved.

For a fresh or healing piercing, material is only one part of the decision. The Association of Professional Piercers also tells customers to consider appropriate size and style, a smooth finish, secure settings and internally threaded or threadless construction. Read How to Choose the Right Jewelry for Your Piercing for the complete selection framework.

Know what different evidence documents can show

Evidence documents are not interchangeable. A short label such as certificate can hide important differences.

Material or mill documentation

A mill test certificate normally identifies material produced from a particular heat or lot and records the applicable grade and test results. Its usefulness depends on traceability: the jewelry maker should be able to connect the stock used in production to the documented heat or batch.

The APP notes that mill certificates can provide evidence of a specific metal grade with an ASTM or ISO designation. A document may be genuine while its connection to a particular finished piece remains unproven, so the traceability link still matters.

A chemical-composition test report

A laboratory can measure selected elements in a submitted sample and compare the results with stated requirements. This is direct evidence for the tested sample and reported analytes. It is not automatically evidence for every production batch, every item in a Collection or requirements the laboratory did not test.

A lead, cadmium or other analyte report

A targeted report answers only the analyte questions it names. Lead and cadmium results do not establish nickel content or nickel release. Two tested metals do not justify heavy-metal free. A result for the metal rod does not automatically describe a coating, stone, adhesive or every assembled component.

Finished-jewelry quality records

Finished-piece inspection can address dimensions, surface condition, closure security, stone settings, coatings and other construction details. These questions are distinct from alloy chemistry. A strong evidence system connects them instead of asking one report to prove everything.

Read Oumo Jewelry's composition report

Oumo Jewelry's Certification Page provides the original report links. The composition report should be described with the following exact scope:

• SGS report number: GZHL260401779601JW
• SGS reference: GZIN2604003122ML01_EN
• Report date: April 30, 2026
• Sample received: April 21, 2026
• Test period: April 21–30, 2026
• Applicant: OMIVI LIMITED
• Sample description: ASTM F136 TITANIUM PIERCING JEWELRY
• Reported test: Chemical composition analysis
• Reported comparison: ASTM F136-13 (Reapproved 2021)e1
• Reported conclusion: The measured chemical-composition results for the submitted sample were marked Pass, including the applicable product-analysis tolerance for oxygen.

The table reports carbon, oxygen, nitrogen, hydrogen, aluminum, vanadium and iron, with titanium listed as the balance. That supports a chemistry statement about the submitted sample. It does not show a tensile test, bend test, microstructure examination, surface-finish assessment, corrosion test, nickel-release test, sterilization validation or biocompatibility test.

The first page identifies the sample as titanium piercing jewelry manufactured for and sold under Oumo Jewelry, based on the applicant-provided description. Oumo selects the tested samples from the titanium products supplied by its manufacturing partners and sold by the brand; SGS records the test methods and results for those samples.

How Oumo Jewelry uses this report

The report supports this precise result:

A submitted Oumo Jewelry finished titanium piercing-jewelry sample was tested by SGS and reported as passing the chemical-composition requirements of ASTM F136-13 (Reapproved 2021)e1, including the applicable product-analysis tolerance.

This report is one part of a broader quality-control process that also includes supplier specifications and finished-piece checks. When Oumo Jewelry changes manufacturer or adds a production partner, we arrange new random-sample testing as part of supplier verification. Each report remains connected to the identified tested sample and test scope, so customers can understand exactly what was verified.

Understand the 0.14% oxygen result

The oxygen line is the easiest part of the report to misread.

The report prints a 0.13% maximum for heat analysis and shows a measured result of 0.14% for the submitted finished-product sample. It marks the result Pass and notes a 0.02% permitted allowance for oxygen under product analysis.

Here is the correct interpretation:

1. Heat analysis and product analysis have different roles. Heat analysis characterizes the melt or heat from which the material is produced. Product analysis checks material taken from a finished or semi-finished product.
2. Product-analysis tolerance accounts for measurement variation. ASTM's public summary explains that these tolerances address variation between laboratories; they do not broaden the required heat-analysis chemistry.
3. The allowance is added in percentage points. For this oxygen result, 0.13% + 0.02% = 0.15% as the applicable product-analysis comparison ceiling.
4. The reported 0.14% result is below 0.15%. That is why the report marks it Pass.

The 0.02% figure is the permitted product-analysis variation, not oxygen's total permitted content. 0.20% is not the ASTM F136 oxygen limit, and it should not appear as one on Oumo Jewelry's site.

This tolerance also should not be described as permission to manufacture a heat outside the specified heat-analysis limits. Its purpose is to address expected variation when laboratories measure chemical content at different stages or from different samples.

Read Oumo Jewelry's lead and cadmium report

Oumo Jewelry's second SGS report addresses two analytes in a separately submitted sample:

• SGS report number: GZHL260401779501JW
• SGS reference: ENG-CAN26-0097922
• Report date: April 24, 2026
• Sample received: April 21, 2026
• Test period: April 21–24, 2026
• Sample description: ASTM F136 TITANIUM PIERCING JEWELRY
• Test part description: Silvery metal rod
• Method: With reference to CPSC-CH-E1001-08.3, using AAS/ICP-OES
• Lead result: Not detected (ND) at a method detection limit of 20 mg/kg; report limit 100 mg/kg; marked Pass
• Cadmium result: Not detected (ND) at a method detection limit of 5 mg/kg; client-quoted limit 100 mg/kg; marked Pass

Not detected does not mean the analyte is proven to be absolutely zero. It means the laboratory did not detect it at or above the stated method detection limit in that test portion.

The lead conclusion is reported against the cited U.S. accessible-substrate requirement. The report states that the cadmium maximum was quoted from the client's requirement. These are different bases and should not be presented as though both were the same universal regulatory certification.

The accurate summary is: SGS reported lead and cadmium as not detected at the stated method detection limits in the tested part of the submitted sample. This precise result is part of Oumo Jewelry's ongoing supplier quality-control process. Claims involving a different substance or test, such as nickel release, are evaluated with evidence matched to that specific question.

Use a practical report-reading checklist

When a jewelry brand shows a material report, read more than the logo and the word Pass.

1. Name the exact standard and edition. ASTM F136 is less precise than ASTM F136-13 (Reapproved 2021)e1 or ASTM F136-26.
2. Identify the report issuer and number. This lets the reader distinguish one report from another and use any available verification process.
3. Check the date. A report is a dated record, not an undated lifetime promise.
4. Read the sample description and photograph. Confirm what was submitted and which part was tested.
5. Separate applicant information from laboratory findings. Brand, supplier or product descriptions may be supplied by the applicant; measured results are the laboratory's findings.
6. Find the actual test scope. Was the test chemistry, lead, cadmium, nickel release, corrosion, mechanical properties or something else?
7. Read the method, units and detection limit. ND at 5 mg/kg communicates more than none.
8. Check where the limit came from. It may come from a standard, regulation or client requirement.
9. Read the conformity rule and notes. A tolerance or decision rule may explain a result near a listed value.
10. See how the report fits the quality-control process. Strong supplier management combines representative testing, specifications, traceability and finished-piece checks.
11. Look for traceability. The business should know how the documented material or tested sample connects to the product being sold.
12. Match evidence to each question. Chemistry, lead/cadmium, nickel release, finish and fit are different checks; using the right evidence for each one is more useful than a vague badge.

The goal is not to make every customer perform laboratory auditing. It is to give customers enough context to understand what a document contributes and to prevent one result from being used as proof of unrelated claims.

Check the rest of the finished jewelry

Even when the alloy evidence is appropriate, a piercing-jewelry decision still includes the finished piece.

Surface and manufacture

Look for a smooth, highly polished wearable surface without scratches, burrs, tool marks or polishing residue. The APP explains that surface irregularities can damage delicate healing tissue. The ASTM alloy designation alone does not grade the polish on an individual piece.

Size, style and anatomy

Gauge, wearable length or ring diameter, placement, angle and anatomy must work together. A suitable alloy in the wrong size or style can still create pressure, movement or snagging. Initial sizing and healing-stage changes belong with a qualified piercer.

Closures and settings

Internally threaded and threadless systems keep a smooth wearable surface from passing exposed external threads through the channel. Ends should fit securely, and stones or decorative components need secure settings. These construction features are separate from the chemistry report.

Coatings and every component

A titanium base does not automatically prove the composition, thickness, durability or skin-contact behavior of a colored coating. Nor does a rod result automatically cover a decorative top, stone, solder, adhesive or separate component. Product descriptions should identify the base material and finish separately, supported by evidence appropriate to each claim.

Individual response

No material label can guarantee that every person will have no reaction. If you have a known metal allergy or develop persistent itching, rash, swelling or another concerning symptom, stop treating the question as a document-reading exercise and seek appropriate professional advice. Read Piercing Jewelry Materials for Sensitive Skin for the broader material and reaction framework.

What to avoid when describing ASTM F136 evidence

• Calling a submitted-sample test report a certification of the whole brand or Collection.
• Describing ASTM F136 as a finished-jewelry design or medical approval.
• Saying SGS certified when the evidence is an SGS test report.
• Turning lead and cadmium results into heavy-metal free or nickel-free.
• Omitting the tested sample, test part, report number, date or edition.
• Calling ND absolute zero without the method detection limit.
• Treating the 0.02% product-analysis tolerance as the total oxygen limit.
• Presenting 0.20% as the ASTM F136 oxygen limit.
• Assuming a historical edition is the active edition without checking.
• Using alloy chemistry as a substitute for surface, fit, closure and finished-piece quality.

Frequently asked questions

Is ASTM F136 the same as pure titanium?

No. ASTM F136 covers wrought Ti-6Al-4V ELI, a titanium alloy with controlled aluminum, vanadium and interstitial elements. Commercially pure titanium has different grades and specifications. Titanium alone does not identify which one is present.

Does ASTM F136 mean the finished jewelry is a surgical implant?

No. The specification's intended application is material used in manufacturing surgical implants. A piercing-jewelry item is not converted into a regulated implant or medically approved device simply because its material is claimed to meet the specification.

Did the Oumo Jewelry composition sample pass with 0.14% oxygen?

Yes, according to SGS report GZHL260401779601JW. The report applies the +0.02 percentage-point product-analysis tolerance to the 0.13% heat-analysis maximum, so 0.14% is within the applicable 0.15% product-analysis comparison ceiling. 0.20% is not the oxygen limit.

Does not detected mean there was absolutely no lead or cadmium?

No. In report GZHL260401779501JW, it means the laboratory did not detect lead at or above 20 mg/kg or cadmium at or above 5 mg/kg in the tested part. The detection limit must remain attached to the statement.

What do Oumo Jewelry's current reports say about nickel?

The current reports document ASTM F136 chemical composition and lead/cadmium results for the identified tested samples. Nickel release is a different test question, so Oumo Jewelry uses evidence specifically matched to a nickel-release claim rather than treating an unrelated result as a substitute.

How does Oumo Jewelry apply testing when suppliers change?

Oumo Jewelry uses third-party random-sample testing as part of ongoing supplier verification. When we change manufacturer or add a production partner, we arrange new random-sample testing. The current SGS documents record the identified samples and tests, while supplier specifications and finished-piece checks support the wider day-to-day quality-control process.

Is SGS tested the same as SGS certified?

No. SGS tested should name the report, submitted sample and test performed. These documents are test reports; they should not be promoted as a broad SGS certification program unless separate certification evidence exists.

How does ASTM F136 fit into fresh-piercing jewelry selection?

ASTM F136 is a relevant material specification, and the APP includes compliant Ti-6Al-4V ELI titanium among its material guidance for initial jewelry. Oumo Jewelry pairs material verification with product specifications and finished-piece quality checks; a qualified piercer then considers surface, construction, sterilization, dimensions, placement, anatomy and professional installation for the individual piercing.

Keep learning

• View Oumo Jewelry's Certification Page and original reports
• Compare piercing-jewelry materials for sensitive skin
• Learn how to choose jewelry for your piercing
• Return to the Oumo Jewelry Piercing Academy

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Sources: ASTM International — active ASTM F136-26; ASTM International — ASTM F136-13 (Reapproved 2021)e1; Association of Professional Piercers — Jewelry for Initial Piercings; Oumo Jewelry Certification Page; supplied SGS reports GZHL260401779601JW and GZHL260401779501JW
Evidence note: Oumo Jewelry combines supplier verification, third-party random-sample testing and finished-piece quality checks. Each SGS report records the identified sample, test, method, edition and date; questions outside that test scope are evaluated with evidence matched to the specific claim.