Do Unopened Guitar Strings Go Bad: The Science Behind Corrosion and Storage

Many guitarists wonder whether unopened guitar strings can go bad. The short answer is no, they are made of various metals that do not go "off" in the traditional sense. However, like all metals, guitar strings do corrode over time. This article will delve into the reasons behind corrosion, storage methods, and the lack of a "best before" date due to the inherent nature of metal.

The Science Behind Corrosion

Despite being in sealed envelopes with "Volatile Corrosion Inhibitor" (VCI) powders or gases, guitar strings can still corrode over time. This process is particularly notable with 12-string sets, which have been observed to show significant corrosion when opened, even from well-known manufacturers. The issue often arises from extended storage of old stock, where the time between manufacture and sale may be several years.

For example, a customer service representative from a major string manufacturer told me that string quality begins to degrade almost immediately after formation. While they are "best" for about 12 to 24 months, prolonged storage without a "best before" date can lead to noticeable corrosion. This is particularly evident in brands that use cheaper packaging, such as squeezing multipack sets into cheaper outer wraps, which can result in punctured inner envelopes.

Quality Control and Packaging Variability

VCI is often used in packaging to protect the strings from corrosion, but its effectiveness can vary between brands. Many guitar strings undergo changes in packaging from time to time, which serves as an indicator of potential quality control issues. It's essential to understand that while VCI can provide some level of protection, it cannot entirely eliminate the risk of corrosion, especially when strings are stored for extended periods.

In addition to VCI, some brands employ vacuum sealing techniques to protect the strings. However, this practice introduces another layer of potential risk. For instance, some brands use vacuum-sealed plastic bags, which are then placed in cheaper cardboard outer wraps. This can result in exposed strings puncturing the inner envelopes, negating the protective effects of the VCI. The lack of a "best before" date often stems from the complexity and cost of implementing such a system, which can be challenging for manufacturers to justify in terms of quality and consumer confidence.

Tips for Proper Storage

Given the propensity for corrosion, it's crucial for guitarists to handle their unopened strings carefully and store them properly. Here are a few tips:

Store in a cool, dry place: Avoid exposing the strings to extreme temperatures and moisture, as these can exacerbate the corrosion process. Utilize desiccants: Placing desiccants in your guitar case can help absorb moisture and protect the strings from corrosion. Consider the packaging: Opt for brands that use high-quality, air-tight packaging and VCI to maximize the longevity of the strings.

Conclusion

While unopened guitar strings do not go "off" in the traditional sense, they are indeed susceptible to corrosion over time. Understanding the reasons behind this and practicing proper storage techniques can help extend the lifespan of your guitar strings, ensuring they remain in peak condition for as long as possible. Whether you're a professional musician or a casual player, taking these steps can make a significant difference in your guitar's performance and sound.