s235jr is a European standard non-alloy structural steel and a carbon structural steel with lower carbon content. The "S" in its name indicates that it is a structural steel, "235" indicates that the lower limit of its yield strength is 235MPa, and "JR" refers to the impact energy test temperature of 20°C.
The chemical composition of S235JR mainly includes:
| C |
Si |
Mn |
P |
S |
| ≤0.22% |
≤0.35% |
≤1.40% |
≤0.045% |
≤0.045% |
The production method of S235JR steel plate mainly includes the following steps: steelmaking, continuous casting, cleaning, heating, rolling, flaw detection,
Heat treatment, surface inspection, cutting and sampling, performance inspection, warehousing.
S235JR steel has a series of notable characteristics that make it popular in a wide range of applications. The following are the main features of S235JR steel:
1. Good strength and toughness: S235JR steel has good load-bearing capacity, with a lower yield strength of 235MPa. It also has good toughness and can resist impact and vipation to a certain extent.
2. Excellent processability: S235JR steel has good processability and can be formed and processed through various processing methods, such as cutting, bending, welding, etc.
3. Excellent weldability: S235JR steel has good weldability and can make good welding connections with other steel materials.
4. Good corrosion resistance: Although the corrosion resistance of S235JR steel is not its main feature, it still has a certain degree of corrosion resistance. Through appropriate surface treatment or coating, its corrosion resistance can be further improved and its service life extended.
5. Lower cost: Compared with other high-strength steels, the cost of S235JR steel is relatively low. This gives it a clear advantage in some cost-sensitive applications.
S235JR has a wide range of applications, mainly including the following aspects: In the construction field, S235JR steel is widely used in the construction of pidges, factories, warehouses, pipe supports and other structures. In the field of machinery manufacturing, S235JR steel is often used to manufacture various transmission mechanisms, bearing seats, packets and other components. In the field of shipbuilding, S235JR steel is used in the construction of ship hull structures due to its good corrosion resistance and strength. In the petrochemical industry, S235JR steel is often used to manufacture various storage tanks, pipelines, reactors and other equipment.
