Martin · Guitar Strings
Martin MA130 Acoustic Guitar Strings
Lower PFAS concern, acoustic guitar strings are inherently simple metal/bronze products with no known Teflon-family coating use.
Martin MA130 strings are traditional phosphor bronze wound on steel, materials with no established PFAS application in string manufacture. No evidence of water-repellent coatings, non-stick treatments, or Teflon-family coating finishes. Martin makes no PFAS claims either way, which is typical for this product category.
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Phosphor bronze wound over hexagonal 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.
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
Martin MA130 strings use phosphor bronze wound around a hexagonal steel core, a well-established acoustic string construction. Phosphor bronze is an alloy of copper, tin, and phosphorus that resists corrosion and provides the bright, warm tone standard in acoustic guitars. This material composition is chemically stable and does not involve synthetic polymers, coatings, or treatments known to leach hazardous substances into food, skin, or air.
The brand's record and disclosure
Martin is a century-old American guitar manufacturer with no recorded safety recalls or chemical disclosure controversies specific to their string products. The company does not publicly disclose detailed chemical testing or sustainability certifications for strings. No formal environmental or toxicological certifications (such as OEKO-TEX or independent lab testing) are widely advertised for this product line, but the absence of known incidents suggests standard manufacturing practices without flagged contaminants.
How it compares in its category
Phosphor bronze acoustic strings are the industry standard and carry no known hazard profile different from competitor brands (D'Addario, Ernie Ball, GHS). Steel-core construction is universal across this category. The main variation is in winding tightness and bronze alloy ratio, which affect tone and durability but not chemical safety. Martin strings are priced and positioned as premium but chemically equivalent to mid-range alternatives.
If you buy it
Wash hands after playing to remove bronze residue and corrosion byproducts, particularly before eating or touching your face. Replace strings when they sound dull, lose tuning stability, or show visible rust or fraying at the bridge, typically every 1-3 months depending on playing frequency. Store in a dry environment to slow oxidation; humidity accelerates corrosion. No special care beyond standard guitar maintenance is required.
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 dust and corrosion residue inhalation
Phosphor bronze oxidizes with age and humidity, producing surface patina. Vigorous playing or string replacement can generate fine metal particles; no inhalation injury is documented, but handwashing and workspace ventilation are reasonable precautions.
Skin irritation from metal contact
Rough or corroded string edges can cause minor cuts or calluses on fingertips; this is mechanical rather than chemical and universal to string instruments. No allergic reactions to phosphor bronze itself are widely reported.
Lead or cadmium in alloy trace metals
Phosphor bronze and steel are not known to be intentionally doped with lead or cadmium; no testing or recall data exists for Martin MA130 strings. Standard alloy composition should meet music-industry de facto purity standards, though explicit third-party certification is absent.
Hexagonal steel core nickel content
Steel wire may contain minor nickel as a strengthening agent; no dermatitis or nickel sensitivity incidents are documented for acoustic string players. Nickel exposure is skin-contact only and minimized by hand hygiene after play.
Coating or plating toxins
Martin MA130 strings are not plated or coated with synthetic polymers or finishes; the phosphor bronze is the bare winding material. No Teflon-family coating, epoxy, or chemical treatment layer is present to degrade or off-gas.
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.