What is 7Cr17 stainless steel? 

7Cr17 stainless steel is an ultra-low carbon stainless steel that complies with the Chinese GB/T 1220 standard, and corresponds to SUS440A in the Japanese stainless steel grade. Among various types of stainless steel, 7Cr17 stainless steel is the most popular and widely used in various applications from medical equipment to cookware. One of the stainless steel.

What is the chemical composition of 7Cr17 stainless steel?

Carbon C:0.60~0.75

Silicon Si:≤1.00

Manganese Mn:≤1.00

Sulfur S:≤0.030

Phosphorus P :≤0.035

Chromium Cr:16.00~18.00

Nickel Ni: allowed to contain ≤0.60

Molybdenum Mo: ≤0.75 can be added

What are the mechanical properties of 7Cr17 stainless steel?

There are many different grades of stainless steel, each with its own unique properties. One of the most commonly used grades is 7Cr17 stainless steel. This grade has a high chromium content, good corrosion resistance and good mechanical properties. 7Cr17 stainless steel is commonly used in applications that require strength and durability, such as fasteners and valves.

Hardness: annealed, ≤255HB; quenched and tempered, ≥54HV

Heat treatment specifications and metallographic structure:

Heat treatment specifications: 1) annealing, slow cooling at 800~920°C; 2) quenching, oil cooling at 1010~1070°C; 3) tempering, rapid cooling at 100~180°C.

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 is the thermal performance of 7Cr17 stainless steel?

7Cr17 stainless steel is a martensitic stainless steel with high carbon and chromium content. It has good corrosion resistance and can be heat treated to increase strength and hardness. This makes it ideal for applications requiring high strength and wear resistance, such as in cutting tools and surgical instruments.

How about the magnetic properties of 7Cr17 stainless steel? 

7Cr17 stainless steel is a magnetic material, which means it can be affected by a magnet. If you put a 7Cr17 stainless steel object in a magnetic field, it will become magnetized. The strength of the magnetic field will depend on the strength of the magnetic field. 7Cr17 stainless steel is not a permanent magnet, so if you remove the magnetic field, the magnetism will disappear.

What is the forging performance of 7Cr17 stainless steel?

There are several key properties that make 7Cr17 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. In addition, 7Cr17 stainless steel has a high melting point, which is very suitable 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 7Cr17 stainless steel an excellent choice for a variety of forging applications.

How about the corrosion resistance of 7Cr17 stainless steel?

7Cr17 stainless steel is a high alloy martensitic stainless steel with good corrosion resistance in many environments. The alloy has been developed to resist pitting and crevice corrosion in chloride-containing environments, and against oxidizing environments, such as those found in paper mills and chemical plants. The alloy was also found to be resistant to intergranular corrosion.

How is the weldability of 7Cr17 stainless steel?

7Cr17 stainless steel has excellent weldability due to its high martensite content. The martensitic structure also provides good resistance to intergranular corrosion after welding. This grade of stainless steel is commonly used in the food and beverage industry because of its resistance to food acids and alkaline solutions.

What is the difference between 7Cr17 stainless steel and SUS440B, SUS440C?

7Cr17 stainless steel is hard in the hardened state, but tougher than SUS440B and 11Cr17, and softer than SUS440C after heat treatment. Used as cutting tools, measuring tools, bearings.

What are the advantages of 7Cr17 stainless steel?

7Cr17 stainless steel is an austenitic chromium-nickel alloy, which is widely used in many industries for its excellent corrosion resistance and high strength characteristics. Some of the main advantages of 7Cr17 stainless steel include:

• Excellent Corrosion Resistance: This alloy has excellent resistance to a wide variety of corrosive environments, making it ideal for many industries.

• High Strength: The high strength of this alloy makes it ideal for structural applications.

• Good weldability: The alloy has good weldability and is suitable for various manufacturing processes.

What are the uses of 7Cr17 stainless steel?

7Cr17 stainless steel is hard in the hardened state, but tougher than 8Cr17 and 11Cr17. Often used as cutting tools, measuring tools, bearings.

How to maintain 7Cr17 stainless steel? 

7Cr17 Stainless Steel is an austenitic chromium-nickel alloy that is extremely versatile and is used in a wide variety of end uses. Despite the high nickel content, 7Cr17 stainless steel is still non-magnetic. It is easy to shape and weld.

Due to its ability to resist carbide precipitation during welding, 7Cr17 stainless steel is also widely used in other applications where corrosion resistance is important. These include: heat exchangers, chemical processing equipment, nuclear reactors, and more.

To keep your 7Cr17 stainless steel in good condition, be sure to follow these simple tips:-

Wash with warm soapy water after each use

- Wipe dry quickly with a soft cloth

- Do not use harsh chemicals or abrasive cleaners

- Regularly coat with a thin coat of mineral oil to prevent discoloration