S355 Forged Ring S355J2 Forged Flange S355J2+N
We are a professional manufacturer and exporter of BS EN 10025-2 S355 Forged Ring S355J2 Forged Flange S355J2+N in China.
What is S355 Steel?
The S355 grade of steel is a versatile and high-strength material, widely acclaimed for its robust properties and varied applications, including in the manufacturing of durable forged flanges. Known for its excellent yield strength, the S355 steel’s versatility extends to various forms like S355JR, S355J0, and S355J2, each differentiated by unique qualities suitable for specific engineering requirements.
S355J2 is a structural steel grade commonly used in construction and engineering applications. It belongs to the European standard EN 10025-2, which specifies requirements for structural steel with improved atmospheric corrosion resistance.
S355J2 | 1.0577
Grade S355J2 has a minimum yield strength of 355 MPa. The impact energy at a test temperature of -20°C is at least 27 joules.
S355J2+N Chemical composition
| Nominal thickness =< 30(mm) CEV max = 0.45 |
| C | Si | Mn | P | S | N | Cu | CEV |
| max 0.24 | max 0.55 | max 1.6 | max 0.04 | max 0.04 | max 0.012 | max 0.55 | max 0.47 |
Mechanical Properties of Steel S355J2+N
- Tensile Strength is between 470 – 630 MPa, depending on thickness
- Minimum Yield Strength is 355 N/mm, depending on thickness.
- Good impact resistance – Charpy impact tests at -20°C
- Good corrosion resistance
S355J2+N Equivalent Grade
| Country/Region | Steel Grade |
| DE | St52-3N |
| UK | 50D |
| EU | S355J2+N (formerly S355J2G3) |
| SWE | 2134-01 |
| CHI | Q345D |
| JA | SS490YA |
General Specification of S355J2 Flanges
| Property | Specification |
|---|---|
| Material Grade | S355J2 (EN 10025-2) |
| Standard | EN 1092-1 for flanges) or ASME B16.5 standards |
| Type | Weld Neck, Slip-On, Blind, Socket Weld, Lap Joint, Threaded, or Custom |
| Size Range | Typically DN15 to DN2000 (1/2″ to 80″), or custom sizes based on requirements |
| Pressure Ratings | PN6, PN10, PN16, PN25, PN40, or ANSI Classes 150, 300, 600, etc. |
| Finish | Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ), or custom finishes |
| Surface Treatment | Anti-rust coating, galvanization, or painted as per customer requirements |
Applications of S355J2 Flanges
- Oil & Gas: Used in pipelines, refineries, and offshore platforms.
- Power Generation: Boiler components, turbines, and pressure vessels.
- Chemical Industry: Reactors, heat exchangers, and processing units.
- Construction: Structural connections for heavy-duty applications.
- Marine Engineering: Shipbuilding and offshore structures.
The S355J2 flange is a robust and reliable component widely used in industrial applications requiring high strength, weldability, and toughness. These flanges are made from S355J2 steel, compliant with EN 10025-2 standards, ensuring quality and performance in critical conditions.
