Mechanical Properties of Martensitic Stainless Steel S44080 8Cr17

Mechanical Properties of Martensitic Stainless Steel S44080 8Cr17

Martensitic stainless steel S44080 8Cr17 is an iron-chromium alloy with a high corrosion resistance and excellent heat resistance. It is a common material used in applications such as medical devices, food processing equipment, vessels, and industrial parts. The composition of the steel consists of 8.5%-10.5% chromium and 0.2%-1.2% carbon.

The properties of S44080 8Cr17 depend on the ingredients used and on the manufacturing process. In general, it is known for its high strength, good ductility and high hardness.

The tensile strength of S44080 8Cr17 is around 1000 MPa. At elevated temperatures, its strength decreases slightly, but still remains considerably high. Its yield strength is also high, 680 MPa or higher, depending on the heat treatment method. Additionally, the steel exhibits a good ratio of strength to yield ratio.

In terms of hardness, S44080 8Cr17 has hardness ranging from 40-70 HRC, with the average being 50 HRC. It is important to note that the heat treatments used to achieve the desired hardness can decrease the ductility of the metal.

S44080 8Cr17 has good ductility and toughness for a martensitic stainless steel. Its ductility ranges from 85% – 65% depending on how it is heat treated. It also has a good toughness and has a Charpy V-notch impact test at -150C of more than 40 J/mm2, which is considered to be good ductility.

In terms of corrosion resistance, S44080 8Cr17 has excellent corrosion resistance in general and high resistance to some strong acids such as concentrated hydrochloric acid and sulfuric acid. However, it is not recommended for use in hot chloride-containing environments or in steam generators.

In summary, the mechanical properties of S44080 8Cr17 are as follows:

• Tensile strength: 1000 MPa

• Yield strength: 680 MPa

• Hardness range: 40-70 HRC

• Ductility range: 85-65%

• Charpy V-notch impact test at -150°C: more than 40 J/mm2

• Corrosion resistance: excellent general corrosion resistance and high resistance to certain strong acids

S44080 8Cr17 is a high strength, heat and corrosion resistant material with excellent properties suitable for many applications. Its superior properties and ability to withstand harsh environments make it a popular choice for many industries.

Martensitic stainless steel grade S44080 (8Cr17) is an excellent option for corrosion resistance, high hardness, and good strength. It also has excellent wear resistance qualities making it ideal for industrial applications.

The chemical composition of S44080 (8Cr17) is as follows: Carbon (C) 0.75-0.95%, Chromium (Cr) 17.0-18.0%, Manganese (Mn) 0.6-1.0%, Nickel (Ni) 0.4-0.6%, Phosphorus (P) 0.04%, Sulfur (S) 0.03%, Silicon (Si) 0.4-0.6%.

The mechanical properties of S44080 (8Cr17) stainless steel are very good compared with other martensitic stainless steels. The ultimate tensile strength is 900 MPa, the yield strength is 600 MPa and the elongation at break is 25%. Its hardness is in HRC 32-38.

The corrosion resistance of S44080 (8Cr17) is very good. It can be used in many corrosive environments. It has superior corrosion resistance to both acids and alkalis. It is also resistant to intergranular attack in chloride solutions.

S44080 (8Cr17) is commonly used in a variety of industrial components such as pistons, valves, fasteners, pump parts and surgical instruments. It can be used in high-pressure and temperature applications such as in turbochargers, oil pumps and steam turbines. For applications that require very good wear resistance, it can be heat treated to increase its hardness and wear resistance.

In conclusion, S44080 (8Cr17) is an excellent choice when high corrosion resistance and strength are needed. It has good mechanical properties and corrosion resistance and is suitable for many industrial applications.