Composition, Properties, and Applications of A240 type TP410

ASTM A240/A240M is a standard specification for chromium and chromium-nickel stainless steel plate, sheet, and strip for pressure vessels and for general applications.

The most commonly used grades are the austenitic grades such as 304, 304L, 316, and 316L, which have a high content of chromium and nickel and offer good corrosion resistance, high strength, and good formability. Other grades include ferritic and martensitic grades such as 409, 410, 430, and 440C, which offer good resistance to high-temperature and corrosive environments.

A240-TP410 is a martensitic stainless steel alloy that is commonly used in applications where high strength, hardness, and corrosion resistance are required. This alloy is also known as UNS S41000, which is its standard designation according to the Unified Numbering System (UNS).

Equivalent grades

TP410 is a martensitic stainless steel that is equivalent to several other grades of stainless steel, including:

• AISI 410
• UNS S41000
• EN 1.4006
• JIS SUS410
• GB/T 10Cr13

Composition: 

The primary alloying element in TP410 is chromium, which is present in concentrations of 11.5% to 13.5%. Carbon is also a significant component, with concentrations ranging from 0.08% to 0.15%. Other alloying elements present in smaller amounts include manganese, silicon, phosphorus, sulfur, and nickel. This composition gives TP410 its characteristic high strength, hardness, and corrosion resistance.

Properties: 

TP410 is known for its high mechanical properties, including excellent tensile and yield strength. It has a high hardness, which makes it resistant to wear and abrasion. TP410 also exhibits good corrosion resistance in mildly corrosive environments, although it is not as corrosion-resistant as some other stainless steel alloys, such as austenitic grades.

Mechanical properties

The mechanical properties of TP410 depend on various factors such as the heat treatment, manufacturing process, and other conditions.

Typically, TP410 has a tensile strength of 480 MPa (70 ksi) and a yield strength of 275 MPa (40 ksi). The elongation at break is usually around 20% and the hardness ranges from 170 to 255 HBW (Brinell Hardness).

In terms of impact toughness, TP410 exhibits moderate to high impact strength. The Charpy V-notch impact toughness is usually around 35 Joules (25 ft-lb) at room temperature. However, the impact toughness can vary depending on the temperature and the heat treatment conditions.

It is important to note that the mechanical properties of TP410 can be improved through appropriate heat treatment, such as quenching and tempering. This can result in higher strength and hardness, as well as improved toughness.

Applications: 

TP410 is commonly used in applications such as pumps, valves, and other equipment that operate in corrosive environments, such as those found in the chemical and petrochemical industries. It is also used in the construction of heat exchangers, reactors, and other process equipment.

In addition, TP410 is often used in the manufacturing of surgical and dental instruments, as well as in the production of blades and other cutting tools. Its high strength and hardness make it an ideal material for these types of applications.

Conclusion: 

TP410 is a widely used martensitic stainless steel alloy that offers high strength, hardness, and corrosion resistance. Its composition and properties make it ideal for a range of applications, particularly those in corrosive environments. While it may not be as corrosion-resistant as some other stainless steel alloys, its high strength and hardness make it a popular choice for many industrial and manufacturing applications.