CR1000/1470DP dual-phase steel is a high-strength, high-toughness and high-corrosion-resistant stainless steel material, which is mainly composed of chromium, nickel, molybdenum, copper and other elements. It has a duplex structure, a combination of austenite and ferrite, which gives it excellent properties in terms of strength, toughness and corrosion resistance. CR1000/1470DP dual-phase steel is usually used in the manufacture of marine engineering, oil and gas pipelines, chemical equipment, food processing equipment and other applications requiring high strength and high corrosion resistance.

What is the chemical composition of CR1000/1470DP dual phase steel?

Chromium (Cr): about 16-26%

Nickel (Ni): about 6-8%

Molybdenum (Mo): about 1-3%

Copper (Cu): about 1-3%

Manganese (Mn): about 1-2%

Nitrogen (N): about 0.1-0.3%

Silicon (Si): about 0.5-1%

Phosphorus (P): 0.035% max

Sulfur (S): 0.015% max

Carbon (C): 0.03% max

What are the mechanical properties of CR1000/1470DP dual phase steel?

Yield strength: up to 1470 MPa;

Tensile strength: up to 1000 MPa;

Elongation: usually above 10%, even as high as 50%;

Impact toughness: usually above 50-100 J/cm2;

Hardness: usually between 250-350 HB.

What is the strength and corrosion resistance of CR1000/1470DP dual phase steel?

CR1000/1470DP dual-phase steel has excellent strength and corrosion resistance.

First of all, dual-phase steel is composed of two phases of austenite and ferrite, which make it have the characteristics of high strength and high toughness at the same time. This is because austenite has higher strength while ferrite has higher toughness. By adjusting the chemical composition and heat treatment process of dual-phase steel, its mechanical properties can be further optimized.

Secondly, CR1000/1470DP dual-phase steel contains high chromium, high nickel, high molybdenum and other alloying elements, which make it have good corrosion resistance. It can resist the erosion of various corrosive media, such as sea water, acid, alkali and so on. In addition, duplex steels have excellent resistance to stress corrosion cracking and maintain their corrosion resistance in high stress environments.

What are the characteristics of CR1000/1470DP dual phase steel?

High strength: The yield strength of CR1000/1470DP dual-phase steel can reach up to 1470 MPa, and the tensile strength can reach up to 1000 MPa, which is higher than traditional carbon steel and stainless steel.

High toughness: Dual-phase steel is composed of two phases of austenite and ferrite, which makes it have the characteristics of high strength and high toughness at the same time. This makes it have good plasticity and impact toughness, not easy to break.

Excellent corrosion resistance: CR1000/1470DP dual-phase steel contains high chromium, high nickel, high molybdenum and other alloying elements, which make it have good corrosion resistance. It can resist the erosion of various corrosive media, such as sea water, acid, alkali and so on.

Excellent weldability: Duplex steel has excellent weldability and can be welded by various common welding methods, such as arc welding and laser welding.

Wide range of application: CR1000/1470DP dual-phase steel has a wide range of applications and can be used to manufacture high-strength, high-corrosion-resistant and high-toughness equipment and components, such as offshore engineering, chemical equipment, oil and gas pipelines, and auto parts wait.

How to process CR1000/1470DP dual phase steel?

Cutting process: CR1000/1470DP dual-phase steel usually requires a high-speed cutting process to ensure cutting efficiency and surface quality. The cutting speed is generally 100-150 m/min, the feed rate is 0.2-0.3 mm/rev, and the cutting depth is about 0.5-1 mm.

Tool selection: Choose carbide tools or coated tools to ensure the hardness and life of the cutting edge. For complex workpiece shapes, you can choose a ball nose cutter or a circular arc cutter.

Coolant Selection: Use the proper coolant during cutting to lower temperatures, reduce friction and extend tool life.

Welding process: Use proper welding methods and processes to ensure welding quality and strength. Common welding methods include argon arc welding, resistance welding, laser welding, etc.

Processing environment: When processing CR1000/1470DP dual-phase steel, the processing environment should be kept clean and tidy to avoid the influence of dust and impurities on the processing process and product quality.

Pre-processing inspection: Before processing, the workpiece should be inspected and cleaned to ensure that the surface of the workpiece is free of impurities and surface blemishes.

How to weld CR1000/1470DP duplex steel?

Welding CR1000/1470DP dual-phase steel requires attention to some special processes and techniques to ensure welding quality and strength.

Common welding methods include argon arc welding, resistance welding, laser welding, etc. The following are specific precautions for these welding methods:

Argon arc welding: CR1000/1470DP duplex steel needs to use appropriate welding wire and shielding gas during argon arc welding. Usually argon tungsten arc welding is used, the appropriate tungsten electrode and the appropriate current and voltage are selected, and the heat input and welding deformation should be minimized during welding.

Resistance welding: Resistance welding is a commonly used welding method. The resistance welding of CR1000/1470DP duplex steel can be spot welding or wire welding. During spot welding, it is necessary to select the appropriate welding time and current intensity according to factors such as the thickness of the workpiece and the thermal conductivity of the material. During online welding, it is necessary to control the welding speed and welding pressure to ensure the quality and strength of the weld.

Laser welding: Laser welding is a high-precision, high-efficiency welding method. Laser welding of CR1000/1470DP dual-phase steel requires selection of appropriate laser power and focal length, and control of welding speed and welding depth to ensure welding quality and strength.

What is the production process of CR1000/1470DP dual-phase steel?

Smelting: The raw materials are smelted and continuously cast by a continuous casting machine, and the molten metal is formed into a slab during the continuous casting process.

Hot rolling: the slab is hot-rolled to make it into a thin plate, and the hot-rolling temperature is usually between 950°C and 1150°C.

Pickling: The hot-rolled steel plate is pickled to remove surface oxide and rust for subsequent processing.

Cold rolling: The pickled steel plate is cold rolled to further reduce the thickness and improve the surface quality. The cold rolling temperature is usually between room temperature and 500°C.

Quenching: The cold-rolled steel plate is quenched to make it a dual-phase steel. The quenching temperature and time need to be controlled within a certain range to obtain the desired structure and properties.

Further processing: the quenched steel plate is processed by cutting, crimping, stamping, etc. to meet different needs.

Surface treatment: Paint, electrophoresis coating, galvanizing and other surface treatments are carried out on the processed steel plate to improve its corrosion resistance and appearance quality.

What fields or industries is CR1000/1470DP dual-phase steel suitable for?

Since CR1000/1470DP dual-phase steel has the characteristics of high strength, excellent formability, good corrosion resistance and welding performance, it is widely used in the following fields or industries:

Automobile manufacturing: Dual-phase steel can be used in the manufacture of automobile body and chassis components. It has good stamping performance and corrosion resistance, and can effectively improve the lightweight and energy-saving performance of automobiles.

Construction industry: Duplex steel can be used in building structural parts, pipes, storage tanks and other fields. It has high strength and good corrosion resistance, and can improve the wind resistance, earthquake resistance and corrosion resistance of buildings.

Energy field: Duplex steel can be used in oil and gas pipelines, storage tanks, ships and other fields in petroleum, natural gas, marine and other fields. It has high strength and good corrosion resistance, which can improve the service life and safety performance of equipment.

Household appliances and electronics: Duplex steel can be used for housings, brackets, motors and other components of home appliances and electronic products. It has high strength and good formability, and can improve the stability and service life of products.

Contact us

Dear customer, thank you very much for your attention and support to our company. Our company is a professional enterprise engaged in the production and sales of CR1000/1470DP dual-phase steel, and has been committed to providing customers with high-quality, reliable products and excellent services for many years.

Our CR1000/1470DP dual-phase steel has excellent mechanical properties, high strength and good formability, and has been widely used and recognized in many fields such as automobile manufacturing, construction industry, energy field, home appliances and electronics. Our products have passed ISO9001 quality management system certification and ISO14001 environmental management system certification, with stable quality and excellent environmental performance.

We will provide you with comprehensive and personalized services, including product consultation, technical support, logistics and distribution, etc. We believe that choosing our CR1000/1470DP dual-phase steel will be your wisest choice. We look forward to your visit and cooperate with you to create a better future.