The application of ASTM A519 4130 chromium molybdenum seamless steel pipes

ASTM A519 4130 chromium molybdenum seamless steel pipes are mainly used for manufacturing steel pipe off-road vehicles, rock climbing vehicles, all terrain vehicles, aircraft landing gear, bicycles and anti rolling racks.

The Cr chromium and Mo molybdenum content of 4130 steel is relatively high, so many people regard 4130 material as chromium molybdenum material. Most chromium and molybdenum materials are used on the aircraft landing gear. Later, some professional bicycle frames are also made with ASTM A519 4130 chromium molybdenum seamless steel pipes, and it is a big selling point.

ASTM A519 4130 chromium molybdenum seamless steel pipe is still the best choice for the anti roll frame and steel tube frame used in cross-country competition. Under the premise of guaranteeing the same or even higher strength, 4130 steel pipe can reduce the weight of the frame. However, it is important to note that the 4130 material itself is very strong. If no tempering or normalizing is done after hot rolling, the tensile strength is more than 1000MPa, the yield strength is very high and the elongation is less than 10%. The result is that ASTM A519 4130 chromium molybdenum seamless steel pipe can not bend, and the 4130 steel pipe will break when the it is bent.

After the correct treatment, the stress in the production process of ASTM A519 4130 chromium molybdenum seamless steel pipes will be basically eliminated, and the strength is guaranteed and good toughness is obtained at the same time.