What is 1Cr17Ni7 stainless steel? 

1Cr17Ni7 stainless steel is an austenitic stainless steel conforming to the Chinese GB/T 1220-1992 standard, similar to ASTM standard 301 stainless steel, 1Cr17Ni7 stainless steel has high strength after cold working. It is a very commonly used stainless steel. 

What are the characteristics of 1Cr17Ni7 stainless steel?

It has high strength after cold working. For railway vehicles, conveyor belts, bolts and nuts. Will not corrode, pit, rust or wear. Stainless steel is also one of the strongest materials among architectural metal materials. Because stainless steel has good corrosion resistance, it allows structural components to permanently maintain the integrity of the engineering design. Chromium-containing stainless steel also combines mechanical strength and high elongation, which is easy to process and manufacture parts, has good ductility, and is used for shaped products. Can also be machine speed hardened. Good weldability. Wear resistance and fatigue strength are better than 304 stainless steel. At high temperature, it not only has the performance of anti-oxidation or gas medium corrosion resistance, that is, thermal stability, but also has sufficient strength at high temperature, that is, thermal strength.

What are the approximate grades of 1Cr17Ni7?

The international grades of 1Cr17Ni7 are as follows:

What is the chemical composition of 1Cr17Ni7 stainless steel?

The composition of stainless steel is approximately 18% chromium and 8% nickel. These two elements work together to form a durable alloy that is resistant to corrosion. The addition of other elements, such as molybdenum, carbon and nitrogen, can further enhance the corrosion resistance of stainless steel.

Carbon C: ≤0.15

Silicon Si: ≤1.00

Manganese Mn: ≤2.00

Sulfur S: ≤0.030

Phosphorus P: ≤0.035

Chromium Cr: 16.00～18.00

Nickel Ni: 6.00～8.00

Nitrogen N: ≤0.10

What are the mechanical properties of 1Cr17Ni7 stainless steel?

Tensile strength σb (MPa): ≥520

Conditional yield strength σ0.2 (MPa): ≥205

Elongation δ5 (%): ≥40

Reduction of area ψ (%): ≥60

What are the physical properties of 1Cr17Ni7 stainless steel?

Hardness: ≤187HB; ≤90HRB; ≤200HV

Elastic modulus ksi (MPa): 28.0x103 (193x103) in tension, 11.2x103 (78x103) in torsion

Magnetic permeability: H=200 Oersteds: annealed <1.02 max.

Melting point: 2250-2590°F (1399-1421°C)

Density: 0.285 lb/in3 7 .88 g/cm3

Resistivity: micron inches (microhm-cm): 68°F (20°C): 27.4 (69.5)

Specific heat: BTU/lb/°F(kJ/kg K):32 -212°F(0-100°C):0.12(0.50)

Heat treatment specifications: solid solution 1010 ~ 1150 ℃ rapid cooling.

Metallographic structure: The structure is characterized by austenitic type.

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

What is the processing performance of 1Cr17Ni7 stainless steel? 

1Cr17Ni7 austenitic stainless steel products include steel bars, steel plates, steel pipes, steel wires, steel strips and forged steel parts. It has excellent hot and cold working properties. The hot working temperature is 850~1150°C, the solution treatment temperature and the softening annealing temperature in cold working are 1050~1100°C. The steel has good welding performance and can be welded by arc welding, electric cathode welding, etc.

What is the corrosion resistance of 1Cr17Ni7 stainless steel?

1Cr17Ni7 stainless steel has good to excellent corrosion resistance and is similar to grade 304 and is used in many food service applications.

Why is 1Cr17Ni7 stainless steel corrosion resistant?

The stainless and corrosion resistance of 1Cr17Ni7 stainless steel is due to the formation of chromium-rich oxide film (passive film) on its surface. This rust and corrosion resistance are relative. Tests have shown that steel is resistant to air, water, etc. In weak medium and oxidizing medium such as nitric acid, the corrosion resistance of the steel increases with the increase of the chromium water content. When the chromium content reaches a certain percentage, the corrosion resistance of the steel changes suddenly, that is, from easy to rust to hard to rust. Rust, from non-corrosion resistant to corrosion resistant.

How about the cold formability of 1Cr17Ni7 stainless steel?

1Cr17Ni7 stainless steel is ductile and easy to form, but due to its high work hardening rate, severe forming or multiple operations may require intermediate annealing. Its hardness and strength make it ideal for structural applications. Usually stamped or drawn.

Can 1Cr17Ni7 stainless steel withstand high temperature?

1Cr17Ni7 stainless steel exhibits good oxidation resistance and is suitable for intermittent duty up to 840°C and continuous duty up to 900°C.

Can 1Cr17Ni7 stainless steel be heat treated?

1Cr17Ni7 stainless steel is not hardenable by heat treatment.

Can be reduced to pressure, heated to 400-900°F (260-482°C), then air cooled.

What specifications can 1Cr17Ni7 stainless steel provide?

Hot rolled rod 15~100mm forged rod: 100mm~350mm cold rolled

Thin plate 0.05mm-4.0mm hot-rolled plate: 4mm~14mm with 2mm-

Forgings of various sizes and specifications of 10mm, individual stocks are not fixed in size, etc.

What is the difference between 1Cr17Ni7 and 304?

The main difference between 1Cr17Ni7 and 304 is that 301 has less nickel and chromium content than 304, and its tensile strength and hardness increase during cold working. It is non-magnetic, but it is magnetic after cold working. 301 steel is widely used in trains, aircraft, conveyor belts, etc.

What are the applications of 1Cr17Ni7 stainless steel? 

Stainless steel is an alloy of iron, chromium and other metals. It is highly resistant to corrosion and staining. Stainless steel is used in a variety of applications, mainly for equipment and components that are subjected to high loads in the cold-worked state and where it is desired to reduce the weight of the equipment and not to rust, such as railway vehicles, conveyor belts, bolts, nuts, fasteners, etc.

In summary, 1Cr17Ni7 stainless steel is a low carbon austenitic stainless steel that has excellent corrosion resistance compared to other grades of stainless steel. This material has excellent weldability and formability, making it ideal for applications requiring high strength and ductility. Its high chromium content also improves its resistance to oxidation and wear. All of these properties make this type of stainless steel the perfect choice for many different applications.