D'Addario · Guitar Strings
D'Addario Acoustic Bronze Guitar Strings
Lower PFAS concern; standard string material composition poses minimal exposure risk.
D'Addario Acoustic Bronze strings are made from phosphor bronze winding and steel core, neither material class typically associated with intentional PFAS use. No water-repellency, non-stick, or stain-resistant treatment is disclosed or expected for guitar strings.
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Phosphor bronze wound over steel hex core
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
other is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
D'Addario Acoustic Bronze strings use phosphor bronze wire wound around a hex steel core. Phosphor bronze is an alloy of copper, tin, and small amounts of phosphorus, chosen for acoustic instruments because it produces warm tone and resists corrosion better than plain bronze. The steel hex core provides structural integrity and tuning stability. This material composition is inert under normal playing conditions and does not leach into skin or saliva during use.
The brand's record and disclosure
D'Addario is a long-established string manufacturer (founded 1974) with no documented safety recalls, contamination incidents, or regulatory warnings specific to their acoustic bronze line. The company does not publish detailed chemical composition disclosures or third-party safety certifications for strings, which is typical for the instrument accessory industry. No controversies regarding heavy metals, coatings, or manufacturing practices are on record for this product line.
How it compares in its category
Phosphor bronze is the industry standard for acoustic guitar strings and is chemically similar across major brands (Elixir, Martin, GHS, Fender). D'Addario's formulation is conventional; the main material-safety variable across brands is the type of core coating (some use polymer coatings that may off-gas), but D'Addario's uncoated hex core avoids that concern. Nylon or steel-only alternatives pose their own trade-offs (tone, durability) rather than safety advantages.
If you buy it
No special precautions are required during normal playing. Store strings in a cool, dry place to slow oxidation and corrosion; humidity accelerates darkening but does not create a safety hazard. Replace strings every 1-3 months depending on playing frequency and climate; worn strings sound dull and may break unexpectedly, not because of chemical degradation but mechanical fatigue. Wash hands after playing if you have sensitive skin, as new strings can leave fine metal particles on fingertips.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Heavy metal leaching (copper, tin, zinc from alloy)
Phosphor bronze is inert in the presence of skin oils and saliva during normal playing. No documented cases of copper or tin toxicity from acoustic string use exist; the contact duration and surface area are minimal compared to ingestion or chronic occupational exposure.
Steel core rust or corrosion byproducts
The hex steel core is sealed by the wound bronze layer and is not exposed to skin or mouth during play. Rust forms only when strings are stored in high humidity or after extended use; this degrades tone but does not create an acute chemical hazard.
Volatile organic compounds (VOC) off-gassing
Uncoated strings such as D'Addario's standard bronze line do not employ polymer coatings that off-gas; some competitor brands (Elixir, coated lines) use polymer wraps that may emit minimal VOCs, but this product avoids that concern.
Manufacturing residue or contaminants (oils, lubricants, solder flux)
New strings may carry light machine oils, drawing lubricants, or manufacturing dust; D'Addario does not disclose cleaning protocols. Rinsing new strings briefly with water or wiping with a cloth before use is a common precaution but not required for safety.
Nickel exposure from steel core (for nickel-sensitive individuals)
Steel hex cores typically contain nickel as a hardening agent. Contact with strings is brief and dermally absorbed nickel is minimal, but individuals with severe nickel dermatitis may experience mild skin irritation on fingertips; alternative materials (pure copper core, nylon) are available from other brands if needed.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 78% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Guitar Strings
Martin
Retro Acoustic Guitar Strings
Phosphor bronze, stainless steel, nylon wound
Lower concern, acoustic guitar strings typically use established metals and nylon without water-repellent coating or nonstick coatings.
✓Bare metal or glass, no coating at all
Acoustic360
Ernie Ball Everlast Acoustic Guitar Strings
Phosphor bronze/stainless steel wound on steel core
Lower PFAS concern, acoustic guitar strings use standard metal materials with no known fluorochemical treatments.
✓Bare metal or glass, no coating at all
Dean Markley
Electric Guitar Strings
Steel alloy strings (nickel-plated or stainless steel core)
Lower PFAS concern, steel strings lack typical PFAS applications, but no brand disclosure exists.
✓Bare metal or glass, no coating at all
More guitar strings grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.