Dean Markley · Guitar Strings
Dean Markley Signature Series Electric Guitar Strings
Lower PFAS concern; guitar strings are not a known PFAS application, but no brand transparency.
Dean Markley Signature Series strings are primarily nickel-plated steel, a material category with no typical PFAS risk. Guitar strings are not a product category where PFAS coatings (like water/oil resistance or non-stick) are standard.
Shop Dean Markley on Amazon →Material
Nickel-plated steel strings
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
Dean Markley Signature Series strings are nickel-plated steel wound around a steel core, a standard construction for electric guitar strings. Nickel plating provides corrosion resistance and tonal brightness while steel delivers durability and tension stability. The plating thickness and uniformity affect both sound longevity and potential surface degradation over time, though nickel-plated strings are not a known source of skin or systemic exposure under normal playing conditions.
The brand's record and disclosure
Dean Markley is an established string manufacturer with decades of market presence but maintains minimal public disclosure on material sourcing, coating processes, or chemical safety certifications. No recalls, safety controversies, or third-party testing results are publicly documented for this product line. The brand does not publish transparency statements on manufacturing inputs or heavy metal content testing, which is typical for the guitar string industry but limits independent verification.
How it compares in its category
Nickel-plated steel strings are the conventional baseline for electric guitar strings and carry no known safety advantage or disadvantage versus other major brands (Ernie Ball, D'Addario, Fender). All mainstream electric string manufacturers use similar nickel or nickel-iron plating on steel cores. Dean Markley Signature Series occupies the mid-to-mainstream market tier without specialized coating innovations or claimed safety differentiators.
If you buy it
Store strings in a dry environment to slow corrosion; humidity and sweat accelerate degradation. Replace strings when they lose brightness, develop visible pitting, or fail to hold tuning, typically every 3-6 months depending on playing frequency. Hand contact with strings poses no known acute hazard; standard guitar playing hygiene (clean hands, occasional string wiping) is sufficient. If you have nickel sensitivity, test with a small patch before extended use, though contact dermatitis from strings is rare.
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.”
Nickel leaching or dermal contact
Nickel-plated strings can release trace nickel under acidic conditions (sweat, moisture), but skin exposure during normal playing is minimal and documented cases of nickel dermatitis from strings are uncommon. Individuals with known nickel hypersensitivity should monitor for hand irritation.
Coating degradation and particle shedding
Over time, nickel plating can pit and flake, especially in high-humidity or high-sweat environments. Micro-scale particles shed during playing are not reported as a health concern, but visible corrosion signals string replacement is needed.
Cadmium or other heavy metals in plating
No public documentation indicates Dean Markley uses cadmium-based plating in modern production; nickel plating is the stated standard. Historical cadmium plating in strings is not reported for this brand or era.
Zinc or copper core contamination
Steel-core strings with nickel plating are not a typical source of uncontrolled zinc or copper leaching. No recalls or warnings exist for this product.
Ingestion hazard from broken strings
Broken strings can be sharp and pose a minor choking or ingestion risk if accidentally swallowed, though this is a mechanical rather than chemical hazard and is not specific to Dean Markley.
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.