Along with the years of entrepreneurial journey of Zhongyuan people, she gradually formed her own spiritual pillar and behavioral norms. In the silent inheritance, she guided Zhongyuan Company towards a more brilliant tomorrow.
Introduction to S355JR Material Standard Steel Pipe
Basic information
The S355JR steel pipe made of S355JR material is a low-alloy high-strength structural steel that complies with the European standard EN10025. Among them, "S" represents that the steel plate is a European standard structural steel; 355 "represents the minimum yield strength of the steel plate, which is 355MPa; JR "represents the delivery quality of steel plates, and impact testing is not conducted here. It corresponds to the B-level in the national standard, which is the ambient temperature impact test (usually conducted at 20 ° C).
chemical composition
The chemical composition of S355JR material is strictly controlled to ensure stable performance. The main chemical components and approximate content range are as follows:
Range of Element Content (%)
Carbon (C) ≤ 0.22% (some sources also mention carbon content between 0.12-0.24%)
Silicon (Si) ≤ 0.55% (some sources also mention silicon content between 0.10-0.50%)
Manganese (Mn) ≤ 1.60% (some sources also mention manganese content between 0.60-1.10%)
Phosphorus (P) ≤ 0.025%
Sulfur (S) ≤ 0.025%
Nitrogen (N) ≤ 0.012%
Copper (Cu) ≤ 0.55%
In addition, it may also contain small amounts of alloying elements such as titanium (Ti), chromium (Cr), nickel (Ni), etc., which help improve its strength and corrosion resistance, but the specific content is usually adjusted appropriately according to production needs and standard specifications.
mechanical property
·Yield strength: varies depending on the thickness of the steel plate. When the thickness is ≤ 16mm, the yield strength is ≥ 355MPa; When the thickness is 16-40mm, the yield strength is ≥ 345MPa. This value represents the minimum stress value at which the material begins to undergo plastic deformation when subjected to external forces.
·Tensile strength: The range of tensile strength varies depending on the thickness. Generally, the tensile strength is between 470-630MPa at different thicknesses, and the maximum value can reach 490MPa, indicating the maximum stress that the material can withstand before tensile fracture.
·Elongation: When the thickness is between 3-40mm, the minimum elongation A5 (%) is 22%. As the thickness increases, the elongation decreases, indicating the material's extensibility before fracture.
·Impact toughness: The specific values may vary depending on different standards or manufacturers, but generally can meet the requirements of impact testing at lower temperatures.
ADD：Chengnan Industrial Development Zone, Yanshan County, Hebei Province
Domestic phone number：0086-317-6689999
International call：0086-317-6165555
E-mail:9905791@qq.com
