304H stainless steel provides a solution when pipework is often exposed to high temperatures. Designed for demanding high-temperature service, it avoids costly deformação por fluência. Ensure reliable performance of your tubo de aço inoxidável e stainless steel fittings.
What Is 304H Stainless Steel?
Stainless steel 304H (UNS S30409) is a high-carbon version of stainless steel 304. It is an austenitic chromium-nickel alloy. The high carbon content increases strength at high temperatures and enhances creep resistance. This makes 304H stainless steel ideal for applications above 500 degrees Celsius (932 degrees Fahrenheit).
Key Advantages of 304H Stainless Steel
Stainless Steel 304H retains its strength at very high temperatures and resists deformation under load.
Mais alto carbon content increases creep strength. It resists slow, permanent deformation over time.
o cromo content creates a protective oxide layer that prevents surface degradation. This ensures longevity in oxidising environments.
Despite its high carbon content, Stainless Steel 304H is easy to weld.
The 304H Steel is used in many industries. It is used in chemical processing, power generation and refining, and can handle corrosive media at high temperatures.
Composição química
| Elemento | Cr | Ni | C | Mn | Si | P | S |
|---|---|---|---|---|---|---|---|
| Conteúdo (%) | 18.0 – 20.0 | 8.0 – 10.5 | 0.04 – 0.10 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.030 |
O que fazemos
Propriedades mecânicas típicas
| Resistência à tracção | Resistência ao escoamento (0,2% Offset) | Alongamento | Dureza (HRB) | Densidade | Faixa de fusão |
|---|---|---|---|---|---|
| ≥515MPa (75ksi) | ≥205MPa (30ksi) | ≥40 | ≤92 | 8,0g/cm³ | 1400-1450°C |
304H Stainless Steel in High-Temperature Piping Applications
- Pressure Vessels: Handling of high temperature and high pressure vessels including steam headers and trocadores de calor.
- Boiler components: The 304H steel is used for superheater and reheater pipework. They can withstand high heat and steam pressures.
- Refinery Piping: Commonly found in petrochemical plants, it handles hot process fluids. This includes furnaces and crackers.
- Power Plants: Components exposed to flue gases or hot steam can be made of 304H Stainless Steel.
- Industrial Furnaces: Used in radiant tubes, mufflers and heat treatment units. Because it prevents scaling and oxidation at very high temperatures.
Sourcing 316H Stainless Steel Pipe and Fittings
Verificar a conformidade com Normas ASTM. A norma ASTM A312 abrange sem emendas e tubo de aço inoxidável soldado. A norma ASTM A403 abrange os produtos forjados aço inoxidável austenítico acessórios.
Certifique-se de que os tubos e acessórios atendam às dimensões exigidas. Isso inclui especificações (por exemplo, Sch 10S, Sch 40S). O ajuste adequado é fundamental.
Veja o documento de especificação do tubo de aço inoxidável
Trabalhar com fabricantes de renome who offer reliable 304H steel products and have certificações(por exemplo ISO 9001 e CE-PED).
Sempre peça Relatórios de testes de materiaisque confirmam a composição química e verificam as propriedades mecânicas.
304H is designed for high temperatures, but specific procedimentos de soldagem are also important. Please ensure proper tratamento pós-soldagem.
Contate-nos
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