303 stainless steel
347 stainless steel forgings are essential for high-temperature and corrosive environments, offering niobium-enhanced stability, oxidation resistance, and long-term durability. Their compliance with rigorous international standards ensures reliability in aerospace, energy, and chemical industries.
Descriptions
1. Chemical Composition
The addition of niobium (≥10×C% by weight) stabilizes the alloy against sensitization. Below is the detailed chemical composition:
2. Mechanical Properties
347 stainless steel forgings exhibit excellent mechanical properties in both annealed and high-temperature conditions:
3. Common Forging Product
Forged Flanges
Forged Valves
Forged Pipe Fittings
Forged Turbine Blades
Forged Heat Exchanger Tubes
4. Key Advantages
Niobium Stabilization: Superior resistance to intergranular corrosion compared to unstabilized grades (e.g., 304).
High-Temperature Strength: Retains mechanical integrity under prolonged thermal stress.
Weldability: Minimal risk of sensitization during welding.
5. Industry standards
Standard | Scope |
ASTM A182/A182M | Forged fittings, flanges, and valves. |
ASTM A473 | Stainless steel forgings (general). |
ASME SA182/SA182M | ASME Boiler and Pressure Vessel Code. |
EN 10088-3 | Technical delivery conditions for bars, rods, and wire. |
AMS 5512 | Aerospace-grade sheet and strip. |
GB/T 1220 (China) | Stainless steel bars (Chinese standard). |
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CONTACT US
Address
B-2007,Chuanmei Building,Taishan Street,Taian City，Shandong, China
Call Us
+86 0538 6368027
Email Address
Sales@tiptopforging.com
Applications
Jet engine components (combustors, exhaust ducts). Afterburner parts and heat shields.
High-temperature valves, flanges, and wellhead components.
Boiler tubes, superheaters, and turbine blades.
