Acoustic360 · Guitar Strings
Ernie Ball Everlast Acoustic Guitar Strings
Lower PFAS concern, acoustic guitar strings use standard metal materials with no known fluorochemical treatments.
Ernie Ball Everlast strings are made from phosphor bronze or stainless steel wound around a steel core. Acoustic guitar strings don't require water resistance, non-stick coatings, or grease-proofing, the typical drivers of PFAS use. No public data indicates PFAS in this product category, and the brand makes no PFAS claims either way.
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Phosphor bronze/stainless steel wound on steel 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.
Uncoated safe material
Bare, uncoated material (cast iron, stainless, carbon steel, or glass) with no surface treatment to contain PFAS.
The full breakdown
What it's made of and why it matters
Ernie Ball Everlast strings use phosphor bronze wound around a steel core, a conventional acoustic guitar string composition. Phosphor bronze is a copper alloy with tin and phosphorus that resists oxidation and corrosion, making it durable for repeated string vibration. The steel core provides structural strength. Neither material is known to leach toxic metals under normal playing conditions, as both are inert metals that do not degrade chemically from finger contact, sweat, or humidity alone.
The brand's record and disclosure
Ernie Ball is a longstanding US string manufacturer without publicly documented safety certifications or disclosures specific to chemical treatments or testing. No recalls or safety warnings related to string composition have been recorded for this product line. The brand maintains silent stance on PFAS use, which is typical for the acoustic string category where fluorochemical treatments are not industry standard.
How it compares in its category
Phosphor bronze is the conventional premium material for acoustic strings; Everlast competes with similar offerings from D'Addario, Martin, and GHS using the same base alloy. Coated alternatives (polymer-wrapped strings) exist but add environmental and disposal concerns rather than health benefits. Standard uncoated bronze-on-steel strings like Everlast represent the lowest-intervention option in the category.
If you buy it
Store strings in a dry place to prevent rust on the steel core, though this is cosmetic rather than a safety issue. Replace when they sound dull, lose intonation stability, or break, typically every 1 to 3 months depending on play frequency. No special handling precautions are needed; standard hand contact and normal playing pose no chemical exposure risk. Dispose of used strings as scrap metal if recycling facilities accept them, or standard trash.
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.”
Metal leaching (copper, tin, iron)
Phosphor bronze and steel are inert under normal playing conditions. No established pathway for these metals to leach into the body from finger contact or saliva on acoustic strings.
Coating or finish toxins
Everlast strings are uncoated wound strings with no reported application of varnishes, polymer wraps, or chemical finishes that would introduce formaldehyde, heavy metals, or other synthetic hazards.
Teflon-type coating or Teflon-family coating fume risk
These are solid metal strings without Teflon-type coating or Teflon coating. No fume generation risk exists even if strings are heated (which does not occur during normal acoustic guitar play).
Corrosion byproducts from humidity exposure
Steel core can corrode in very humid or salty environments, producing iron oxide (rust). While rust itself is not acutely toxic, corroded strings should be replaced for playability rather than health reasons.
Nickel exposure from alloy trace elements
Phosphor bronze typically contains no nickel; it is tin, copper, and phosphorus. Stainless steel core may contain trace nickel, but this poses no risk to skin since strings do not dissolve or shed particles during normal use.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 82% 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.
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.