S355J2G3 Steel, 1.0570 DIN St52-3N - High Yield Non-Alloy Steel from China Suppliers and Factory
GENERAL CHARACTERISTICS
This grade of steel is carbon manganese, high yield non alloy steel. It is called S355 because of the average minimum yield for this material is 355 Mpa. As a structural steel, it has excellent strength and weldability. It can be readily welded to other weldable steel. For its low carbon equivalent, it possesses good cold-forming properties. S355J2G3 is generally supplied in a normalized condition.
Designation by Standards
| Mat. No. | DIN | EN | AISI |
|---|---|---|---|
| 1.0570 | St52-3N | - | - |
Chemical Composition (in weight %)
| C | Si | Mn | Cr | Mo | Ni | V | W | Others |
|---|---|---|---|---|---|---|---|---|
| max. 0.22 | max. 0.55 | max. 1.60 | - | - | - | - | - | - |
- Description: Unalloyed structural steel.
- Applications: Common structural steel for welded assemblies, Re > 355 N/mm2. Guaranteed toughness at 0 °C. It can be used for statically and dynamically stressed constructions.
- Modulus of Elasticity: 210 x 103 N/mm2 (at ambient temperature)
- Density: 7.80 g/cm3 (at ambient temperature)
Thermal Processing & Machinability
- Soft Annealing: Heat to 650-700 °C, cool slowly.
- Hardening: Harden from a temperature of 860-890 °C followed by oil or water quenching.
- Tempering (Normalizing): Normalizing temperature: 860-890 °C.
- Forging (Hot Forming): Hot forming temperature: 1050-850 °C.
Machinability is good, rated at 90% that of the 1112 alloy used as a 100% machining rated steel.
Frequently Asked Questions (FAQ)
The designation S355 represents a carbon-manganese structural steel. The number "355" indicates its average minimum yield strength of 355 MPa.
According to DIN standards, Material No. 1.0570 is designated as St52-3N.
The chemical composition includes a maximum of 0.22% Carbon (C), a maximum of 0.55% Silicon (Si), and a maximum of 1.60% Manganese (Mn) by weight.
It is commonly used as a structural steel for welded assemblies in both statically and dynamically stressed constructions, offering guaranteed toughness at 0 °C.
The recommended hardening temperature ranges from 860 °C to 890 °C, followed by quenching in either oil or water.
It features good machinability, rated at approximately 90% of the machinability of the standard 1112 alloy steel.