CR1350/1700MS martensitic steel is a high-strength low-alloy steel widely used in the automotive industry due to its good formability, weldability and corrosion resistance. The “CR” in its name indicates that the steel has been cold-rolled, while “1350/1700MS” indicates that the steel has a minimum yield strength of 1,350 megapascals (MPa) or 1,700 MPa.

Compared with traditional hot-rolled steel, CR1350/1700MS steel has higher strength and better plasticity, as well as higher tensile strength and ductility. This type of steel is commonly used to make components such as automotive chassis, body structure and safety components to improve the performance and safety of the entire vehicle.

What is the chemical composition of CR1350/1700MS martensitic steel?

Carbon (C): 0.15% ~ 0.22%

Silicon (Si): 0.5% ~ 1.5%

Manganese (Mn): 1.0% ~ 2.5%

Phosphorus (P): no more than 0.025%

Sulfur (S): no more than 0.015%

Chromium (Cr): 0.3% ~ 1.0%

Molybdenum (Mo): no more than 0.3%

Nickel (Ni): no more than 0.3%

Copper (Cu): no more than 0.3%

Titanium (Ti): no more than 0.1%

Aluminum (Al): no more than 0.1%

What are the mechanical properties of CR1350/1700MS martensitic steel?

Yield strength: 1,350 MPa ~ 1,700 MPa

Tensile strength: 1,500 MPa ~ 1,800 MPa

Elongation: 8% ~ 15%

Impact toughness: 20 J ~ 40 J

What are the properties of CR1350/1700MS martensitic steel?

CR1350/1700MS martensitic steel is a high-strength low-alloy steel with high strength, excellent toughness and high plastic deformation capacity. Its main performance is as follows:

High strength: The tensile strength of CR1350/1700MS martensitic steel can reach 1350MPa or above 1700MPa, which is higher than traditional ordinary steel.

Excellent toughness: Compared with other high-strength steels, CR1350/1700MS martensitic steel has better toughness, that is, it is not easy to break when subjected to impact or load.

High plastic deformation ability: CR1350/1700MS martensitic steel has high plastic deformation ability, which can maintain its strength and toughness under large deformation.

Good weldability: The steel has good weldability and can be connected by conventional welding methods.

What are the characteristics of CR1350/1700MS martensitic steel?

CR1350/1700MS martensitic steel is a high-strength, high-toughness steel with the following characteristics:

High strength: CR1350/1700MS martensitic steel has high yield strength and tensile strength, which can reach more than 1350MPa and 1700MPa.

Good plasticity and toughness: Although CR1350/1700MS martensitic steel has high strength, it still has good plasticity and toughness. This makes it excellent in high-strength applications and has good durability.

Excellent wear resistance: due to the high hardness of CR1350/1700MS martensitic steel, it has good wear resistance. This makes it ideal for use in the manufacture of parts and assemblies requiring high wear resistance.

Easy to weld: The compositional design and heat treatment process of CR1350/1700MS martensitic steel make it easy to weld, so it can be processed using a variety of welding methods.

How is CR1350/1700MS martensitic steel heat treated?

CR1350/1700MS martensitic steel generally adopts the heat treatment process of quenching and tempering.

Specific steps are as follows:

Heating: Heating the steel piece to an appropriate temperature so that it is evenly heated to the austenite area.

Quenching: Rapidly cool the heated steel below room temperature to produce martensitic structure.

Temperature maintenance: After the hardened layer is formed on the surface of the steel piece, it is immediately placed in a constant temperature furnace and kept at an appropriate temperature for a period of time to eliminate internal stress.

Tempering: Heating the quenched steel to a suitable temperature, holding it at that temperature for a period of time, and then allowing it to cool to room temperature. This can remove part of the hardness and reduce brittleness, improve wear resistance and toughness.

How is CR1350/1700MS martensitic steel welded?

CR1350/1700MS martensitic steel is usually welded by arc welding, gas shielded welding and laser welding. These methods all need to select appropriate welding materials and process parameters to ensure the quality and performance of welded joints.

When selecting welding materials, materials similar or identical to the base metal should be preferred, and attention should be paid to the composition, hardness and other factors of the material. During the welding process, heat input also needs to be controlled to avoid excessively high temperatures, which can lead to poor microstructure and properties.

In addition, the base metal needs to be fully cleaned and degreased before welding to ensure the quality of the weld. After welding is complete, the weld also needs to be inspected and evaluated to ensure it meets the requirements.

What are the uses of CR1350/1700MS martensitic steel?

CR1350/1700MS martensitic steel is a high-strength, high-plasticity steel with excellent mechanical properties and corrosion resistance. It is mainly used in the manufacture of high-end components and structural parts in the fields of aviation, aerospace, automobiles, machinery, etc., such as aircraft engine impellers, turbine disks, bearings, gears, etc. In addition, this steel is also widely used in marine engineering, nuclear industry and other fields, as well as some buildings and equipment that require high strength and corrosion resistance.

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It is our great honor to introduce to you the CR1350/1700MS martensitic steel products produced and sold by our company. This high-strength, high-plasticity steel has excellent mechanical properties and corrosion resistance, and is widely used in high-end components and structural parts in aviation, aerospace, automobiles, machinery and other fields.

If you are interested in our CR1350/1700MS products and wish to purchase, please feel free to contact us. We will wholeheartedly provide you with the highest quality products and the most satisfactory service, and look forward to cooperating with you!