409M Stainless Steel

409M Stainless Steel – Composition, Properties and Uses

If you’re looking for stainless steel that will perform well in harsh environments, then 409M Stainless Steel is the way to go. Due to its chemical composition, this type of steel has excellent corrosion resistance and heat resistance properties. It also offers great mechanical strength and hardness. Let’s take a closer look at some of the features that make 409M Stainless Steel so unique.

Chemical Composition

409M SS is a ferritic steel that contains 11% chromium and very little amounts of carbon, silicon and nitrogen. This combination makes it highly corrosion-resistant, which is why it’s commonly used in corrosive environments. It also has good oxidation resistance up to 870°C (1600°F).

Grade C (max) Si (max) Mn Cr Ni P(max) S (max) N (max) Other Elements
SS 409M 0.03 1.00 0.5-1.5 10.80-12.50 1.5 max 0.040 0.030 0.03

Physical Properties

SS 409M has a density of 7.89 g/cm³ with a melting point of 1399-1454°C (2550-2650°F). It also has a very low electrical conductivity and thermal conductivity. This makes it an ideal material for applications that involve extreme temperatures or exposure to chemicals or acids.

Mechanical Properties

Due to its chemical composition, Grade 409M offers exceptional mechanical strength and hardness. Its yield strength ranges from 290-420 MPa (42 ksi -60 ksi) with an ultimate tensile strength of 490 MPa (71 ksi). It also has an elongation rate of 20%. These properties make it perfect for applications where high levels of durability are required.

U.T.S. N/mm2 Min 0.2% Proof Stress / YS N/mm2 Min % El (GL = 50 mm) Min Hardness HRB max Cold Bend
450 275 22 92 180° 1 t

Equivalent

Grade WERKSTOFF NR. AISI UNS AFNOR BS GOST JIS
SS 409M HYFAB 3/12

Uses

Because of its excellent corrosion resistance properties, 409M Stainless Steel can be used in many different applications, including automotive exhaust systems, fuel tanks, oil pipes, heat exchangers, pressure vessels and more. It’s also often used in industrial equipment such as pumps, valves and other components that require superior performance under extreme conditions.

Conclusion:

In conclusion, 409M Stainless Steel is an ideal material for applications that require superior performance under extreme temperatures or exposure to chemicals or acids due to its excellent corrosion resistance properties and its ability to withstand higher temperatures than other types of stainless steel. Its impressive mechanical properties, such as its yield strength range from 290-420 MPa (42 ksi -60 ksi) and ultimate tensile strength of 490 MPa (71 ksi), make it perfect for applications where high levels of durability are required. This makes it perfect for many different industries, such as automotive exhaust systems, fuel tanks, oil pipes and more! If you’re looking for stainless steel that can handle tough conditions with ease, then consider using 409M Stainless Steel!

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