What material is 1.4418?

September 26, 2023 | Tags: X4CrNiMo16-5-1, 1.4418,

September 26,2023

What material is 1.4418?

The material 1.4418 is a stainless steel alloy. It is also known as X4CrNiMo16-5-1 or 1.4418/QT900. This alloy falls under the category of martensitic stainless steel and contains elements like chromium, nickel, molybdenum, and a small amount of sulfur. It offers good corrosion resistance, high tensile strength, and excellent toughness, making it suitable for various applications, including in the automotive, aerospace, and chemical industries.


1.4418, also known as X4CrNiMo16-5-1 or S165M, is a stainless steel grade that is commonly used in various industries. It belongs to the Martensitic stainless steel group and is known for its excellent strength, corrosion resistance, and toughness.


This particular grade is characterized by its high chromium and molybdenum content, which contribute to its superior performance in harsh environments. The addition of nickel further enhances its resistance to corrosion, making it suitable for applications where exposure to corrosive substances is a concern.

One of the main advantages of 1.4418 stainless steel is its high mechanical properties. It exhibits impressive tensile strength, yield strength, and impact toughness, which makes it suitable for applications that require strong and durable materials. This grade is often used in industries such as aerospace, oil and gas, automotive, and marine, where the components are subjected to high stress and extreme conditions.


In addition to its excellent mechanical properties, 1.4418 stainless steel retains good machinability, allowing for easy fabrication and forming. It can be readily welded, making it a versatile choice for various manufacturing processes.

Furthermore, the corrosion resistance of 1.4418 stainless steel is well suited for applications where exposure to chemicals, acids, and seawater is common. Its resistance to localized corrosion, such as pitting and crevice corrosion, is particularly noteworthy.

In conclusion, 1.4418 stainless steel is a high-performance material that offers superior mechanical properties, excellent corrosion resistance, and good machinability. Its versatility and reliability make it a preferred choice in demanding industries.

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