Compare Stainless Steel 304 and 316. How to identify them? Which one is better?

1. What is Inox 316?

What is Inox 316? This is a question many people have. Inox 316 is a type of stainless steel with a low carbon content that is widely used today. This type of stainless steel is used to prevent corrosion in critical welds.

The material contains molybdenum, making it easy to fabricate or form into a variety of components for applications in architecture, transportation, and industry. Grade 316 also has excellent weldability.

Is Inox 316 Good?

This type of stainless steel is known for its exceptional durability and strength. Therefore, it is considered an excellent material for high-end products, providing long-lasting performance and resistance to wear over time.

2. Notable Advantages of Inox 316

Excellent Corrosion Resistance

Inox 316 offers outstanding corrosion resistance in air and many other highly corrosive environments.

It can resist corrosion in water with up to 1000 mg/L chloride at ambient temperature, reducing to about 500 mg/L at 60 °C.

Harder than Common Stainless Steels

The hardness of Inox 316 is greater than that of standard stainless steels. Therefore, investing in equipment made from this material ensures long-term use without fear of corrosion or failure. Due to its superior quality, Inox 316 is commonly used in high-quality products.

3. What is Inox SUS 304?

Inox 304, also known as stainless steel, contains the following components:

• Fe
• C ~0.08%
• Cr from 17.5 - 20%
• Nickel from 8-11%
• Mn <2%
• Si <1%
• P <0.045%
• S <0.03%

In which, nickel and chromium provide corrosion resistance, while nitrogen adds hardness. Inox SUS 304 is very popular and widely used around the world today.

4. How Many Types of Inox 304 Are There?

Inox 304 is divided into two types:

• 304L: This type has a low carbon content and is typically used to minimize corrosion in critical welds.
• 304H: This type has a higher carbon content compared to 304L and is used in applications requiring higher strength.

5. Notable Characteristics of Inox SUS 304

High Strength and Durability

Inox 304 is one of the most commonly used types of stainless steel in manufacturing. This material is widely utilized in various fields of human life. Not only does it offer high durability and good resistance, but it also provides a high aesthetic appeal for the products created.

Corrosion Resistance to Chemicals

Inox 304 has excellent corrosion resistance when exposed to various chemicals. Additionally, it can resist rust in most applications within construction, manufacturing, food processing, and is extremely convenient for cleaning.

Oxidation Resistance at 925 °C

Inox 304 can withstand oxidation at high temperatures up to 925 °C. In applications requiring high thermal resistance, Inox 304 is always one of the preferred materials.

Inox SUS 304 has weak magnetic properties, making it non-magnetic and ensuring that products made from Inox 304 are very safe.

The various types of Inox 304 can be easily formed without requiring heat treatment. For this reason, this stainless steel is considered a premium material in the production of products and components such as sinks, pans, and water tanks.

Furthermore, Inox SUS 304 demonstrates excellent weldability, making it compatible with all different welding techniques.

6. Which is Better: Inox 304 or 316?

With the advantages of both types of stainless steel, you may still wonder which material—Inox 304 or Inox 316—is better. Please refer to the detailed comparison table below to understand more about what Inox 316 and Inox 304 are, and when to use each type. This will help you decide which material to choose for your products.

Similarities Between Inox 316 and Inox 304

Both types of inox are also known as stainless steel, composed of chromium, manganese, and nitrogen alloys. They have low discoloration, high ductility, and poor magnetic response.

Both types are characterized by their resistance to oxidation and corrosion, making them popular materials for producing large-scale products that are leak-proof and load-bearing, such as water tanks and sinks, etc.

Differences Between Inox 304 and 316

Given the current fluctuations and rising prices of materials, the use of Inox 201 is becoming a popular choice among many manufacturers. Therefore, controlling the input materials is essential to ensure the quality of the final products.

SOLUTION: Handheld Metal Composition Analyzer

The X-MET8000 is an intelligent choice for the rapid classification of alloy grades. It is specifically designed for analyzing alloys such as stainless steel, copper, zinc, chromium, and nickel.

Origin: Hitachi-Hightech – Germany

Application:

Analyzing and classifying various types of stainless steel, including 201, 304, 316, 430, etc.

Advantages:

Compact and Durable: The device is compact and highly durable, suitable for the climate and working environment in Vietnam.

High-Performance X-ray Tube and Advanced Detector: Features a high-performance X-ray tube and state-of-the-art detector (SDD).

Element Range: Capable of detecting elements from Magnesium (Mg) to Uranium (U), covering up to 36 elements depending on the application.

GRADE Database: Includes a database with over 350,000 alloy grades and more than 15 million alternative names from 70 countries and various standards (DIN/EN, ASTM, AISI, JIS, GOST, etc.).