What is 403 stainless steel?

While many materials and alloys are used in industry, one of the most reliable and versatile is stainless steel. While there are many types of stainless steel, one of the most popular is 403 stainless steel. From its performance characteristics to applications, this material has impressed multiple industries. In this article, we'll take a closer look at 403 stainless steel, including what it is and how to use it. We'll also discuss some of its other features that make it an attractive choice for many applications.

What are the other names of 403 stainless steel?

Other designations for 403 stainless steel include UNS S40300 and AISI 403.

What are the characteristics of 403 stainless steel?

403 stainless steel is a martensitic stainless steel with a wide range of applications. Its unique composition and properties make it an ideal welding material. Here are some of the key properties of 403 stainless steel that make it an ideal material for welding:

- High Strength: 403 Stainless Steel has a high strength to weight ratio, making it ideal for applications where weight is a concern.

- Corrosion Resistance: The chromium content in 403 stainless steel gives it excellent corrosion resistance, making it ideal for use in environments where corrosive materials are present.

- Heat Resistance: 403 stainless steel can withstand high temperatures, making it ideal for applications such as boiler and pressure vessel manufacturing.

- Weldability: The martensitic structure of 403 stainless steel makes it highly weldable, meaning it can be easily joined to other metals using standard welding techniques.

What is the chemical composition of 403 stainless steel?

403 stainless steel is a martensitic stainless steel with very good resistance to oxidation and corrosion. The chemical composition of 403 stainless steel is:

- Carbon: 0.01%

- Chromium: 12%

- Manganese: 1%

- Silicon: 0.5%

- Phosphorus: 0.04%

- Sulfur: 0.03%

What are the physical properties of 403 stainless steel?

403 stainless steel is a martensitic stainless steel with a wide variety of uses. The physical properties of 403 stainless steel are:

Impact power ≥118J

Hardness: annealed, ≤200HB; quenched and tempered, ≥170HB

Metallographic structure: The structure is characterized by martensitic type.

Delivery status: Generally, it is delivered in a heat treatment state, and the type of heat treatment is specified in the contract; if it is not specified, it is delivered in a non-heat treatment state.

What are the mechanical properties of 403 stainless steel?

403 stainless steel is a martensitic steel known for its high strength and high toughness. This alloy also has excellent wear and tear resistance, making it ideal for high wear applications. In addition, 403 stainless steel has good corrosion resistance and can maintain its strength and hardness at high temperatures.

The mechanical properties of 403 stainless steel are as follows:

Tensile strength ≥590MPa

Conditional yield strength ≥ 390MPa

Elongation ≥25%

Reduction of area ≥ 55%

What are the thermal properties of 403 stainless steel?

403 stainless steel is a martensitic stainless steel with good thermal and mechanical properties. It has a higher carbon content than 410 and 416 stainless steels and a lower thermal conductivity than austenitic stainless steels. The combination of these properties makes 403 stainless steel suitable for applications where high temperatures are encountered.

What is the forging performance of 403 stainless steel?

There are several key properties that make 403 stainless steel an ideal metal for forging. On the one hand, it has excellent mechanical properties. This means it is easy to shape and not easily deformed. Additionally, 403 stainless steel has a high melting point, making it ideal for use in high temperature environments. Finally, the metal is highly resistant to corrosion, making it ideal for applications that require exposure to chemicals or other corrosive materials. All of these properties make 403 stainless steel an excellent choice for a variety of forging applications.

What is the heat treatment of 403 stainless steel?

403 stainless steel is a martensitic stainless steel used in a wide variety of applications. The steel is known for its high strength and good corrosion resistance. Steel can be heat treated to increase its hardness and strength.

403 stainless steel heat treatment specification and metallographic structure:

Heat treatment specifications: 1) annealing, slow cooling at 800~900°C or rapid cooling at about 750°C; 2) quenching, oil cooling at 959~1000°C; 3) tempering and rapid cooling at 700~750°C.

What are the applications of 403 stainless steel?

403 stainless steel has many different applications. Some of the most common include:

-Car exhaust system

-Aerospace structural components

-food processing

-equipment

- chemical processing equipment

-Nuclear waste container

What is the difference between 403 stainless steel and 304 stainless steel?

403 stainless steel is a grade of stainless steel produced according to the American ASTM standard. It is equivalent to my country's 1Cr12 stainless steel, containing 0.01% carbon and 12% chromium. 403 stainless steel belongs to the international stainless steel marking method. 403 stainless steel pipe - S40300 (American AISI, ASTM). The Chinese brand corresponding to 403 is 1Cr12.

Features and uses: Good stainless heat-resistant steel for steam turbine blades and high-stress components.

304 stainless steel is a common material in stainless steel, with a density of 7.93 q/cm3, also known as 18/8 stainless steel in the industry. With high temperature resistance of 800℃, it has the characteristics of good processing performance and high toughness, and is widely used in industry, furniture decoration industry and food and medical industry. 304 is a general-purpose stainless steel, which is widely used to manufacture equipment and parts that require good overall performance (corrosion resistance and formability).

The specific differences are as follows:

1. Different body shapes: 403 stainless steel is martensitic stainless steel; 304 stainless steel is austenitic stainless steel.

2. Different magnetism: 304 stainless steel is non-magnetic or weakly magnetic. 403 stainless steel is magnetic.

3. Whether it contains nickel: 304 stainless steel contains about 8% nickel, and 403 stainless steel does not contain nickel.