High-temperature materials for boilers and pressure vessels: SB410, SB480, SB480M
JIS G 3103 SB410 SB450 SB480
Check the allowable stress at operating temperature and for long-term use. Supply SB material according to JIS G 3103 in cut plates and processed forms.
In boilers and pressure vessels, high temperatures can lead to prolonged application of pressure and stress, with repeated heating and cooling cycles. Since the strength of steel decreases with rising temperature, material selection cannot be based solely on tensile strength at room temperature. We propose carbon steel plates for boilers and pressure vessels, referred to as "SB materials." SB410, SB450, and SB480 are steel plates according to JIS G 3103. As the operating temperature increases, the allowable tensile stress decreases, and even high-strength steel grades at room temperature may show minimal differences at high temperatures. SB450M and SB480M, which have added Mo, are candidate materials that help mitigate strength reduction at high temperatures. Selection should be based on applicable regulations, design standards, operating temperature, pressure, and holding time.
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basic information
- I don't understand the differentiation between SB410, SB480, and SB480M. - I want to select materials considering the allowable stress at operating temperatures. - I want to procure cut plates and processed products, including material certificates and cutting certificates. Handling steel types: SB410, SB450, SB480, SB450M, SB480M. Typical plate thicknesses are 6 to 50 mm, with standard dimensions of 1524×3048 mm and 1524×6096 mm. We support cutting, drilling, surface processing, bending, and welding fabrication. 1. Main specifications and characteristics - Steel type classification: Steel plates for boilers and pressure vessels (SB materials) - Chemical composition and mechanical properties specified based on JIS standards - Ensures stable strength under high temperature and pressure conditions - Multiple strength grades set according to application 2. Features of processing and construction - Material design based on welding structures - Supports gas, laser, and plasma cutting - Capable of processing such as bending and drilling - Construction suitability for equipment manufacturing 3. Key points in performance - Stable mechanical properties even in high-temperature environments - Toughness and durability required for pressure vessel applications - High structural reliability designed for long-term use
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Delivery Time
P3
※Kumagai Special Steel has an immediate delivery system centered around SB410, including cutting and processing, so it takes about a week depending on the lot. Additionally, for special specifications or large lots, it may take more time. Please contact us via email or phone for inquiries!!
Applications/Examples of results
Boiler and pressure vessel steel plates are designed for equipment that requires safety and reliability under high temperature and high pressure conditions. They are manufactured under strict standard management and are adopted as essential materials supporting various plants and energy-related equipment. 4. Main Applications and Practical Examples - Power generation equipment: Boiler bodies, drums, piping components - Chemical plants: Pressure vessels, reaction tanks, storage tanks - Thermal-related equipment: Heat exchangers, heating furnace components - Energy sector: Oil and gas-related equipment - Industrial equipment: Structures for high temperature and high pressure compatible devices 5. Evaluation Points in Practical Use - Stable mechanical performance under high temperature and high pressure - High safety based on strict standards - Suitable for welded structures, compatible with equipment fabrication 6. Expected Future Market Areas - Renewal and enhancement of energy infrastructure - Hydrogen and ammonia-related equipment - Longevity and safety improvement of plants - Industrial equipment sector aiming for high efficiency Boiler and pressure vessel steel plates are expected to maintain stable demand as important materials, primarily in the energy and plant sectors, based on safety and durability.
Line up（5）
| Model number | overview |
|---|---|
| SB410 (a grade that serves as the standard for steel classification in carbon steel materials) | It has moderate tensile strength (approximately 410 to 550 MPa) and excellent weldability. Welding and forming are relatively easy, and it has excellent workability. |
| SB450 (carbon steel material with improved strength (450-590 MPa grade)) | Maintaining high mechanical properties at medium to high temperatures while ensuring weldability and workability. Applicable to designs with higher strength requirements than SB410. |
| SB480 (carbon steel plate with even higher strength (480-620 MPa grade)) | Selected for conditions with high design loads and pressures. As strength increases, attention to welding conditions and processing management becomes important. |
| SB450M (a material with molybdenum alloy steel (Mo) added as an alloying element) | While maintaining the same strength range (450-590 MPa class), high-temperature strength and creep characteristics have been improved. This is advantageous for pressure vessels and plant components expected to undergo long-term high-temperature loads. |
| SB480M (achieving both higher strength (480-620 MPa class) and high-temperature characteristics) | Compared to SB480, creep resistance and toughness have been improved, making it suitable for applications with strict requirements. It is suitable for use in high-temperature and high-pressure gas equipment and large pressure vessels. |
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Company information
Since our establishment in 1913, we have been a specialized trading company of special steel for nearly a century, listening to the needs of many customers and building an ideal relationship between customers and steel manufacturers as a conductor of steel distribution. As a trading company with various processing equipment, including cutting machines and laser cutting machines, we also contribute to reducing our customers' capital investment. Please feel free to contact us if you have any requests.
