Fender · Guitar Strings
Fender UltraCore 1250 Electric Guitar Strings
Lower PFAS concern, traditional metal guitar strings with no known fluorochemical coatings.
Fender UltraCore strings are constructed from nickel-plated steel and brass, standard materials for electric guitar strings with no documented PFAS treatments. Fender does not disclose PFAS information for this product, which is typical for the category. No public lab testing or regulatory concerns identified.
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Nickel-plated steel core wound with nickel-plated brass
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
Category baseline
other is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
Fender UltraCore 1250 strings use a nickel-plated steel core wound with nickel-plated brass, a standard construction for electric guitar strings. Nickel plating is applied to reduce corrosion and extend string life, and this material combination has been industry-standard for decades with no documented leaching or toxicity concerns during normal use. The strings do not contact food, skin for extended periods, or water in ways that would trigger significant metal migration.
The brand's record and disclosure
Fender, a major established guitar manufacturer since 1946, does not publicly disclose manufacturing certifications, material sourcing audits, or chemical safety reports for strings. No recalls, lawsuits, or verified contamination incidents are on record for this product line. The brand's silence on PFAS and manufacturing transparency is typical for the instrument category and does not indicate known problems.
How it compares in its category
Nickel-plated steel strings are the industry norm across price ranges and brands (Ernie Ball, D'Addario, GHS). Fender's construction and materials are interchangeable with competitors; no brand offers meaningfully safer or more transparent alternatives at consumer level. Coated string variants (e.g., phosphor bronze) exist but add cost with marginal durability gains, not safety advantages.
If you buy it
Wash hands after playing if you have sensitive skin or nickel allergy (rare but documented in some users). Replace strings every 3-6 months depending on play intensity to avoid breakage during performance. Store in a dry environment to minimize oxidation of exposed steel at wound ends. No special precautions needed beyond standard string care; strings are not heated, ingested, or applied to skin.
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 contact dermatitis
Nickel plating may trigger allergic reactions in nickel-sensitive individuals during prolonged skin contact. Incidence is low in general population but documented in musicians with known nickel allergy; not a manufacturing defect, a material property.
Metal leaching into acidic environments
Nickel and brass do not leach into air or sweat at detectable levels under normal string use. No studies or reports document bioaccumulation from string contact in typical players.
Coating degradation and particle exposure
Nickel plating can chip or wear over months of use, exposing steel core; inhaling or ingesting microscopic metal particles from worn strings is theoretically possible but not documented as a health issue in the instrument category.
Manufacturing residues or contaminants
No recall history or test data on heavy metals (lead, cadmium) in Fender strings. Standard electroplating processes do not introduce known toxins, but Fender provides no third-party certification of material purity.
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.
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.