Whether you’re a stainless steel water bottle wholesaler, brand owner, or gift company, you are familiar with the material composition, properties, cost, and else of both types. This expertise will help you better recommend products to your customers and promote successful transactions. Next, I’ll outline the six key differences between Stainless Steel 201 vs 304 for you.
What is the Difference Between Stainless Steel 201 vs 304?
1. Composition
The following is the composition of stainless steel 201 and 304:
| International Standards(%) | 201 | 304 |
| C (Carbon) | ≤0.15 | ≤0.08 |
| Mn (Manganese) | 5.5～7.50 | ≤2.00 |
| P (Phosphorus) | ≤0.060 | ≤0.045 |
| S (Sulfur) | ≤0.030 | ≤0.030 |
| Si (Silicon) | ≤0.75 | ≤1.00 |
| Cr (Chromium) | 16.0～18.0 | 18.0–20.0 |
| Ni (Nickel) | 3.5-5.5 | 8.0-11.0 |
| N (Nitrogen) | ≤0.25 | 0 |
From the sheet above, we can see that the primary differences in alloy composition between the two stainless steels lie in their proportions of nickel, manganese, and carbon. 201 Stainless features high manganese, low nickel, and high carbon content, while 304 has low manganese, high nickel, and low carbon content. These distinctions account for variations in all their properties, including surface color, corrosion resistance, and food contact safety, etc.
Understanding the fundamental compositions of these two stainless steels allows you to grasp their material differences when discussing orders with clients. This professional knowledge enables you to resolve questions about stainless steel materials, solve customer concerns, and enhance negotiation efficiency.
2. Surface Color
When selecting the right stainless steel material for your brand, you’ll surely consider which surface color best fits your brand position. So, how can you distinguish between 201 and 304 stainless steel based on surface color? It’s simple: just remember that the darker color belongs to 201 stainless steel, while the brighter one is 304 stainless steel.
The difference between the two stainless steel from the manganese content in their raw material composition. Higher manganese levels result in a darker color. Material distinction causes 201 to have poorer oxidation resistance and tends to darken more easily with long-term use; 304 offers better oxidation resistance and maintains its bright appearance even after long-term use.
3. Corrosion Resistance
Which stainless steel grade, 201 or 304, do you think offers better corrosion resistance? The correct answer is that 304 stainless steel has superior corrosion resistance compared to 201.
Similarly, this is also determined by the raw material composition of the stainless steel. The most influential component is nickel content. 304 stainless steel, with its high chromium and nickel content and low manganese content, can form a thick chromium oxide passivation film. This film repairs itself quickly when damaged, giving 304 superior corrosion resistance and rust prevention. Conversely, 201 stainless steel has insufficient nickel content. The manganese content replaces nickel to form a passivation film that is thin and has poor repair capability when damaged, resulting in poorer corrosion resistance.
What role does corrosion resistance play in stainless steel water bottles? Clearly, the stronger the corrosion resistance, the less likely the bottle is to rust. Then result in negative reviews for the product. So, choosing rust-resistant stainless steel for water bottles can increase customer satisfaction with your products and improve repeat purchase rates.
4. Mechanical Properties
What are stainless steel’s mechanical properties? Essentially, they refer to the material’s ability to resist deformation, fracture, and wear.
The following sheet outlines the differences in mechanical properties between stainless steel 201 and 304:
| Mechanical Properties | Function | 201 Stainless Steel | 304 Stainless Steel |
| Tensile Strength (MPa) | Resistance to tensile fracture | 520 | 515-1035 |
| Yield Strength (MPa) | Critical stress at which plastic deformation occurs | 275 | ≥205 |
| Elongation (%) | Capacity for plastic deformation before fracture | 55-60 | ≥40 |
| Hardness (HRB) | Determines surface scratch and wear resistance | ≤100 | ≤92 |
| Formability | Comprehensive machinability for stretching, bending, and spinning | Poor | Excellence |
| Weldability | Weld strength and sealing integrity after welding | ordinary | Good |
As shown in the table above, 201 stainless steel has high yield strength, hardness, and elongation, along with decent tensile strength. However, its formability and weldability are inferior to those of 304 stainless steel. 304 stainless steel has lower yield strength, hardness, and elongation, with its minimum tensile strength approaching that of 201 stainless steel. However, its formability and weldability are superior to 201. Therefore, we can conclude that while 201 stainless steel has higher fundamental mechanical properties than 304, its processing performance is relatively weaker.
When accepting custom stainless steel bottle orders from customers, specific bottle shapes or surface treatments like electroplating and laser engraving are often required. In such cases, you can analyze the mechanical property differences between 201 and 304 to recommend the more suitable material, ultimately achieving the customized design the customer desires.
5. Price
Price is undoubtedly your primary concern regarding raw material costs. To be direct, the price of 201 stainless steel is lower than that of 304 stainless steel. In recent years, metal prices have been climbing, and nickel prices have also been rising.
201 is a nickel-saving stainless steel that uses manganese to replace nickel. In contrast, 304 has a significantly higher nickel content, making it superior in material quality to 201 and resulting in a higher price. Overall, 201 is a low-cost, economical stainless steel, while 304 is the classic, versatile stainless steel.
So, if your budget is limited, you can use the more cost-effective 201 stainless steel for the outer layer of your vacuum flask and the more corrosion-resistant and safer 304 stainless steel for the inner layer. If your product is positioned as a premium brand with sufficient budget, you can choose the higher-quality 304 stainless steel for both the inner and outer layers.
6. Food Contact Safety
The food contact safety of stainless steel is closely related to numerous industries, including household goods, food service, food production, and processing, and this certainly includes your stainless tumblers manufacturer industry. Seeing this, you might be concerned about the following question: Do 201 stainless steel and 304 meet food contact safety standards?
We can confirm that 304 stainless steel complies with national standards / FDA / LFGB food contact standards, while 201 does not.
The high manganese content in 201 stainless steel can leach out during long-term contact with beverages and food, releasing harmful metals that pose risks to human health. In contrast, 304 stainless steel has a stable composition. It does not release harmful metals when in prolonged contact with water or food, posing no health risks. Therefore, it is the safe choice for material selection when you are purchasing stainless steel water bottles.
Manufacturing Stainless Steel Water Bottles With High-quality Materials: Laikoe
After reviewing the detailed differences between 201 stainless steel and 304 stainless steel above, you now have a deeper understanding of stainless steel materials. If you’re seeking high-quality stainless steel materials for tumbler products, consider Laikoe, a premium stainless steel bottle manufacturer in China. Our stainless steel water bottle, shaker bottle, coffee tumbler, wine tumbler, travel mug, and sports water bottle are all crafted from premium 304 stainless steel. To learn more about our company, please visit the About Us page.
FAQs
1. Is 201 or 304 Stainless Steel Better?
304 stainless steel is generally superior. 201 stainless steel has lower nickel content, making it more prone to rust and affecting its service life. 304 contains higher nickel levels, offering better corrosion resistance and typically longer durability than 201.
2. Is 201 Food-grade Stainless Steel Better Than 304?
No. The high-nickel, low-chromium composition of 304 stainless steel provides superior corrosion resistance, making it more suitable for cutlery and tableware. Conversely, the low-nickel, high-manganese composition of 201 stainless steel makes it more prone to rusting.
3. How Does the Budget Influence the Choice Between Stainless Steel 201 and 304?
201 is less expensive than 304. Choose 201 stainless steel if the budget is tight. Choose 304 if the budget allows and high-quality material is desired.
4. What Factors Influence the Prices of Stainless Steel 201 and 304?
The prices of 201 and 304 stainless steel are primarily influenced by raw material costs, market demand, and production processes.
5. Stainless Steel 304 is More Expensive Than 201; Is it Worth the Cost?
Generally, it offers better value. The high nickel and chromium content in 304 stainless steel provides superior corrosion resistance, meets food-grade contact standards, ensures greater safety, and allows for broader applications. In contrast, the high manganese and low nickel composition of 201 stainless steel makes it more prone to rust and suitable only for dry environments.
6. Why Not Choose a Cheaper 201?
Due to environmental limitations, 201 stainless steel is prone to rusting, fails to meet food-grade contact standards, and offers lower safety.
7. How to Choose the Best Stainless Steel?
Consider the application purpose. For direct food contact, stainless steel meeting food-grade standards—such as 304 or 316—is mandatory.
8. Why is 304 Stainless Steel Better?
It offers high corrosion resistance, minimal rusting, broad applicability, and food-grade safety.
9. Is 201 Stainless Steel Rust-proof?
201 stainless steel has a certain resistance to rust. However, due to its high manganese content and low nickel content, its rust prevention capability is relatively weak.
10. What are the Pros & Cons of 201 Stainless Steel?
The advantages of 201 stainless steel lie in its low cost and ease of processing. Its disadvantages include poor corrosion resistance, susceptibility to rust, and unsuitability for use in humid environments.
11. Is 201 Stainless Steel Good for Cooking?
It is not suitable for cooking. When 201 stainless steel is in prolonged contact with water, manganese in its composition can leach out. These harmful metals can pose risks to human health, and 201 does not conform to food contact standards.
12. What is the Difference Between 201 and 304 vs 316?
Among these three, 316 offers the best corrosion resistance, while 201 has the worst. 304 is the most versatile and is food-grade.
13. What are the Application Areas of Stainless Steel 201 and 304?
Grade 201 is primarily used in iron gates, iron windows, railways, and similar applications. Grade 304 is mainly used in cutlery, tableware, household items, medical equipment, and related fields.