Stainless steel SSUS430J1L is a grade of ferritic stainless steel that is commonly used in various industrial applications due to its excellent properties. It is also known as SUS430J1L or simply 430J1L. This type of stainless steel contains chromium and molybdenum, as well as low carbon content, which gives it good corrosion resistance and weldability. It is magnetic and has a lower thermal expansion coefficient than austenitic stainless steel grades. Stainless steel SSUS430J1L is used in the manufacturing of various components such as kitchenware, automotive trim, exhaust systems, architectural cladding, and household appliances like washing machines and refrigerators. It is also used in marine applications due to its resistance to corrosion.

What is the chemical composition of Stainless steel SUS430J1L?

The chemical composition of Stainless steel SUS430J1L is:

Carbon (C): ≤0.025%

Silicon (Si): ≤0.75%

Manganese (Mn): ≤1.0%

Phosphorus (P): ≤0.040%

Sulfur (S): ≤0.030%

Chromium (Cr): 17.0-20.0%

Nickel (Ni): ≤0.30%

Molybdenum (Mo): 0.30-0.80%

Nitrogen (N): ≤0.025%

SUS430J1L is a low-carbon ferritic stainless steel grade that contains chromium and molybdenum. It has a high chromium content which provides good corrosion resistance and heat resistance, making it suitable for use in harsh environments. The addition of molybdenum also improves its corrosion resistance and makes it resistant to stress corrosion cracking. The low carbon content in SUS430J1L makes it easier to weld and form.

What are the mechanical properties of Stainless steel SUS430J1L?

The mechanical properties of Stainless steel SUS430J1L are:

Yield strength: ≥868 MPa

Tensile strength: ≥232 MPa

Elongation: ≥43%

Hardness (HB): ≤212

SUS430J1L is a ferritic stainless steel grade with high strength and good ductility. Its high yield strength and tensile strength make it suitable for use in various industrial applications. It has good corrosion resistance and is easily weldable, which makes it a popular choice for manufacturing components in harsh environments. The elongation property of SUS430J1L indicates its ability to stretch or deform under stress without breaking. The hardness of SUS430J1L is within a reasonable range, making it suitable for use in applications that require a balance between hardness and toughness.

What are the physical properties of Stainless steel SUS430J1L？

Physical properties of SUS430J1L:

Density: 7.7 g/cm³

Thermal expansion coefficient: 10.4 μm/m °C (20-100 °C)

Thermal conductivity: 25 W/m °C (100 °C)

Specific heat capacity: 460 J/kg °C (20°C)

Resistivity: 0.6 μΩ m (20°C)

The physical properties of SUS430J1L are important for design and application, such as its high density giving it high strength and durability. Its relatively low coefficient of thermal expansion means it does not expand appreciably under changes in temperature, making it suitable for applications where dimensional stability is required. Its relatively high thermal conductivity can transfer heat efficiently, while its specific heat capacity remains basically unchanged in the temperature range, making it exhibit good stability when absorbing and releasing heat. The low resistivity makes it perform well in terms of electrical conductivity.

What is the processing method of Stainless steel SSUS430J1L?

The processing method of Stainless steel SSUS430J1L includes the following steps:

Melting and casting: The raw materials of stainless steel, such as nickel, iron ore, chromium, silicon, molybdenum, etc., are melted at high temperatures and then poured into molds to form solid stainless steel ingots.

Forming: The stainless steel ingots are shaped into the required shapes, such as plates, bars, pipes, wires, etc., through methods such as hot rolling or cold rolling.

Heat treatment: The stainless steel products are heated to a certain temperature and then cooled to improve their mechanical properties and corrosion resistance. For example, for SUS430J1L, annealing treatment can be performed, which involves heating the steel to 815°C, holding it for 30 minutes, then slowly cooling it to 600°C, and finally quenching it in water.

Cleaning and polishing: The stainless steel products are cleaned with acid or other solvents to remove surface oxides or impurities, and then polished using mechanical or chemical methods to make the surface smooth and shiny.

These processing steps are essential to producing high-quality stainless steel products with the desired properties and performance.

What are the characteristics of stainless steel SUS430J1L?

The characteristics of stainless steel SUS430J1L are as follows:

It is a ferritic stainless steel, containing 17-20% chromium and 0.3-0.8% molybdenum, as well as small amounts of titanium, niobium, zirconium, and other elements.

It has good corrosion resistance and weldability, and can resist corrosion from organic acids, inorganic acids, alkalis, and chlorides, among other media.

It has high hardness, strength, and wear resistance, and can withstand high temperature and high pressure working conditions.

It has good formability, and can be shaped into the desired shape such as plates, bars, tubes, wires, etc. through methods such as hot rolling or cold rolling.

What is the application of Stainless steel SUS430J1L?

In addition to the applications mentioned, stainless steel SUS430J1L is also commonly used in the following areas:

Kitchenware and appliances: Due to its corrosion resistance, hardness, and ability to withstand high temperatures, SUS430J1L is often used in the production of kitchen appliances such as cookware, utensils, and food processing equipment.

Chemical and petrochemical industry: The corrosion-resistant properties of SUS430J1L make it suitable for use in chemical and petrochemical industries, where it can be used to manufacture equipment such as pumps, valves, and tanks.

Medical equipment: SUS430J1L’s biocompatibility, corrosion resistance, and ease of cleaning make it a popular choice for medical equipment such as surgical instruments, dental tools, and implants.

Electronics: SUS430J1L is used in the production of electronic components such as computer hard drives, mobile phones, and other consumer electronics due to its magnetic properties.

Environmental protection equipment: SUS430J1L is often used in the production of environmental protection equipment such as waste treatment plants, water treatment facilities, and air pollution control systems, where its corrosion resistance and durability are key factors.