Rockstar 400 is a type of steel plate that is known for its high strength and toughness. Here are some key properties and characteristics of Rockstar 400 steel: - Rockstar 400 is a high-strength, low-alloy (HSLA) steel plate - It has a minimum yield strength of 400 MPa (58 ksi) - It has a tensile strength of 500-600 MPa (72-87 ksi) - It has a high level of toughness, with a Charpy impact test value of 400 J (295 ft-lb) at -40°C (-40°F) - It has good weldability and is suitable for welding with common welding processes - It is often used in applications such as: - Heavy equipment and machinery - Mining and quarrying equipment - Construction equipment - Bridge building - Offshore platforms Rockstar 400 steel is known for its excellent strength-to-weight ratio, making it a popular choice for applications where high strength and low weight are critical. It is also known for its good corrosion resistance and ability to withstand harsh environments. If you have any specific questions or need more information, feel free to ask!