Stainless steel is one of the most popular materials used in kitchen faucets, sinks, and plumbing products. However, many buyers are confused by two common grades: SUS304 and SUS201. Although they look similar, they have important differences in corrosion resistance, durability, and price. This guide explains everything you need to know before making your purchase.
Table of Contents
- What is SUS304?
- What is SUS201?
- Key Differences
- Which One Should You Choose?
- Price Comparison
- Conclusion
- Frequently Asked Questions
What is SUS304?
SUS304 is a high-quality stainless steel widely used in kitchen faucets, sinks, food processing equipment, and plumbing products. It contains higher levels of chromium and nickel, providing excellent corrosion resistance, durability, and long-term performance. Because of these properties, SUS304 is considered the preferred choice for most residential kitchens.
What is SUS201?
SUS201 is a more affordable type of stainless steel commonly used in budget-friendly kitchen and plumbing products. It contains less nickel and more manganese than SUS304, making it less resistant to corrosion. While it can perform well in dry environments, it may develop rust more easily when exposed to moisture over a long period.
Key Differences
| Feature | SUS304 | SUS201 |
| Corrosion Resistance | Excellent | Moderate |
| Durability | Excellent | Good |
| Nickel Content | Higher | Lower |
| Rust Resistance | Very High | Lower |
| Price | Higher | More Affordable |
Which One Should You Choose?
The best choice depends on your budget and how you plan to use the product.
If you want long-term durability, better corrosion resistance, and fewer maintenance issues, SUS304 is the recommended option.
If you have a limited budget and the product will be used in a dry environment, SUS201 can still be a practical choice.
💡 ToollQ Expert Tip
For kitchen faucets and plumbing products that are exposed to water every day, I generally recommend SUS304. Although it costs more, it usually lasts longer and provides better long-term value.
Related Guides
- How to Choose the Best Kitchen Faucet (2026 Buying Guide)
- Best Kitchen Faucet Materials Explained
- How to Prevent Rust on Stainless Steel Products
Conclusion
Both SUS304 and SUS201 have their place in the market. If durability, corrosion resistance, and long-term reliability are your priorities, SUS304 is the better investment. If your budget is limited and the product will be used in a less demanding environment, SUS201 can still be a practical choice. Understanding the differences helps you make a smarter purchasing decision.
Frequently Asked Questions
Is SUS304 always better than SUS201?
Not always. SUS304 offers better corrosion resistance and durability, but SUS201 can be a good choice for budget-friendly applications in dry environments.
Why is SUS304 more expensive?
SUS304 contains more nickel, which improves corrosion resistance and increases manufacturing cost.
Can SUS201 rust?
Yes. In humid or wet environments, SUS201 is generally more likely to develop rust over time than SUS304.
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