Product Parameters
JIS G3461 STB340 Carbon Seamless Steel Pipes
Material and Specification
This JIS G3461 STB340 seamless carbon steel pipe is designed for high-temperature applications. Its high-quality carbon steel construction makes it ideal for heat exchangers, boilers, and pressure vessels. Meeting the rigorous Japanese Industrial Standard JIS G3461 guarantees superior quality and reliability, even under extreme conditions.
Key Features
High-temperature resistance
Seamless construction for enhanced strength
Suitable for heat exchange, boiler, and pressure applications
Not suitable for heating furnace steel pipes and low temperature steel heat exchanger tubes
Chemical Composition
| Element | Composition (%) |
| Carbon (C) | 0.18 max |
| Silicon (Si) | 0.35 max |
| Manganese (Mn) | 0.30-0.60 |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.035 max |
Mechanical Properties
| Property | Value |
| Tensile Strength | 340-470 MPa |
| Yield Strength | 195 min MPa |
| Elongation | 35% min |
| Hardness (HRB) | 85 max |
Physical Properties
| Property | Value |
| Density | 7.85 g/cm³ |
| Melting Point | 1425°C |
| Thermal Conductivity | 51.9 W/mK |
| Specific Heat | 0.486 kJ/kg·K |
Process Performance
| Performance Parameter | Value |
| Weldability | Excellent |
| Formability | Good |
| Machinability | Fair |
| Corrosion Resistance | Moderate |
Steel Grade
STB340 steel is a low-carbon steel grade with good weldability and formability, high strength, good thermal stability, strong adaptability, relative corrosion resistance, high cost-effectiveness, good processing performance, and is suitable for a variety of high-temperature applications.
Application
JIS G3461 carbon seamless steel pipes are extensively used in heat exchange equipment such as tubular heat exchangers, condensers, and similar heat transfer equipment. They are also applied to boiler tubes, pressure tubes, heat exchanger tubes, condenser tubes, and catalyst tubes, among others.
Possible Alternative Grades
While STB340 is a popular choice, alternative grades that can be considered include STB410, STB510, and STPT370, depending on specific application requirements.
In short, JIS G3461 STB340 carbon steel seamless pipe provides a reliable and durable solution for high-temperature applications that meets strict standard specifications.
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