304 stainless steel, known for its versatility and durability, plays a crucial role in various industries in China. As one of the most widely used stainless steel grades, it offers excellent corrosion resistance and formability, making it ideal for applications ranging from kitchenware to industrial equipment. Understanding its properties and applications is essential for manufacturers and consumers alike.

In this guide, readers will explore the composition and characteristics of 304 stainless steel, including its mechanical properties and resistance to oxidation. We will delve into the manufacturing processes and quality standards that govern its production in China. Additionally, the guide will highlight the economic significance of 304 ss in the Chinese market and its impact on global trade.

By the end of this guide, readers will gain a comprehensive understanding of 304 stainless steel, its applications, and its importance in the Chinese manufacturing landscape. Whether you are a professional in the industry or simply curious about materials, this guide will equip you with valuable insights into one of the most essential materials in modern engineering.

A Comprehensive Guide to SS304 Stainless Steel in China

Introduction

SS304, also known as AISI 304, is one of the most widely used stainless steel grades globally. It is renowned for its excellent corrosion resistance, high strength, and versatility, making it suitable for various applications across multiple industries. In China, SS304 is produced and supplied by numerous manufacturers, including those found on platforms like de.China-steel-pipes.com, de.ss-pipes.com, www.aoxingmetal.com, and de.coldrolledsteels.com. This guide will delve into the technical features, types, and applications of SS304 stainless steel.

Technical Features of SS304 Stainless Steel

SS304 stainless steel is characterized by its unique chemical composition and mechanical properties. Below is a comparison table highlighting its key technical features:

Feature	Value
Chemical Composition	C: ≤0.07%, Si: ≤0.75%, Mn: ≤2.00%
Corrosion Resistance	Excellent in atmospheric conditions
Tensile Strength	≥520 MPa
Yield Strength	≥205 MPa
Elongation	≥40%
Hardness	≤187 HB, ≤90 HRB, ≤200 HV
Temperature Resistance	Up to 870°C (intermittent use)
Weldability	Excellent, compatible with most techniques

SS304’s composition includes 18% chromium and 8% nickel, which contributes to its corrosion resistance and overall durability. This grade is non-magnetic and exhibits good formability, making it ideal for various applications.

Types of SS304 Stainless Steel

SS304 comes in several variants, each tailored for specific applications. Below is a comparison table of the different types of SS304 stainless steel:

Type	Description
304	Standard grade with good corrosion resistance and formability.
304L	Low carbon variant, offering better weldability and corrosion resistance.
304H	High carbon variant, suitable for high-temperature applications.
304N	Nitrogen-enhanced version, providing improved strength and corrosion resistance.
304J1	A variant with lower nickel content, designed for cost-effective applications.

Each type of SS304 has its unique advantages, making it suitable for various industrial applications, from food processing to construction.

Applications of SS304 Stainless Steel

SS304 is widely used across multiple industries due to its excellent properties. Common applications include:
– Food Processing: SS304 is often used in kitchen equipment, food storage, and processing machinery due to its sanitary properties.
– Chemical Industry: Its resistance to corrosion makes it ideal for chemical processing equipment.
– Construction: Used in architectural applications, including railings, facades, and structural components.
– Medical Devices: SS304 is utilized in manufacturing medical instruments and devices due to its cleanliness and durability.
– Household Appliances: Commonly found in appliances like refrigerators, dishwashers, and sinks.

Manufacturers like those listed on de.China-steel-pipes.com and de.ss-pipes.com provide a range of SS304 products tailored for these applications.

Conclusion

SS304 stainless steel is a versatile and widely used material known for its excellent mechanical properties and corrosion resistance. Its various types, including 304L and 304H, cater to specific industrial needs, making it a preferred choice in many sectors. With numerous suppliers in China, such as www.aoxingmetal.com and de.coldrolledsteels.com, businesses can easily source high-quality SS304 products for their applications.

FAQs

1. What is the main difference between SS304 and SS304L?
SS304L has a lower carbon content than SS304, which enhances its weldability and corrosion resistance, making it suitable for applications requiring extensive welding.

2. Can SS304 be used in marine environments?
While SS304 offers good corrosion resistance, it is not recommended for marine environments due to its susceptibility to pitting and crevice corrosion in high chloride conditions.

3. What are the common finishes available for SS304?
Common finishes for SS304 include 2B, BA, No.4, and 8K mirror finishes, each providing different aesthetic and functional properties.

4. Is SS304 magnetic?
SS304 is generally non-magnetic in its annealed state, but it can become slightly magnetic when cold worked.

5. How does SS304 compare to SS316?
SS316 offers better corrosion resistance than SS304, particularly in chloride environments, due to the addition of molybdenum. However, SS304 is more cost-effective and widely used in less demanding applications.