- Excellent oxidation resistance up to high temperatures
- High chromium content (~23–27%) for superior corrosion protection
- Strong resistance to scaling in continuous heat exposure
- Good mechanical strength at elevated temperatures
- Excellent resistance to sulfur and corrosive gases
- Ideal for high temperature stainless steel round bar applications
446 Round Bar (UNS S44600 High Chromium Stainless Steel Bar)
446 Round Bar, also known as UNS S44600 stainless steel bar, is a high-chromium ferritic stainless steel designed for excellent oxidation resistance and high-temperature performance. With one of the highest chromium contents among stainless steels, 446 stainless steel round bar provides outstanding resistance to scaling and corrosion in extreme heat environments.
It is widely used as a heat resistant stainless steel round bar, especially in furnace components, boiler systems, and high-temperature industrial applications.
Key Features of 446 Stainless Steel Round Bar
446 stainless steel bar is engineered for extreme thermal and corrosive environments:
- Excellent oxidation resistance up to high temperatures
- High chromium content (~23–27%) for superior corrosion protection
- Strong resistance to scaling in continuous heat exposure
- Good mechanical strength at elevated temperatures
- Excellent resistance to sulfur and corrosive gases
- Ideal for high temperature stainless steel round bar applications
Chemical Composition (UNS S44600 / 446 Stainless Steel)
- Chromium (Cr): 23.0 – 27.0%
- Nickel (Ni): ≤ 0.75%
- Carbon (C): ≤ 0.20%
- Manganese (Mn): ≤ 1.50%
- Silicon (Si): ≤ 1.0%
- Phosphorus (P): ≤ 0.040%
- Sulfur (S): ≤ 0.030%
The high chromium content makes it a premium oxidation resistant stainless steel bar.
Mechanical Properties (Typical)
- Tensile Strength: 450 – 650 MPa
- Yield Strength: ≥ 275 MPa
- Hardness: ≤ 200 HB
- Excellent high-temperature stability
- Good structural integrity under thermal stress
Product Specifications
We supply high-quality 446 stainless steel round bar stock for industrial use:
- Diameter: 5mm – 300mm (custom sizes available)
- Length: 1000mm / 3000mm / 6000mm / custom cut
- Surface Finish: Black, Peeled, Turned, Polished
- Standards: ASTM A276 / ASTM A479 / UNS S44600
- Condition: Hot rolled / Annealed
Applications of 446 Round Bar
446 stainless steel round bar is widely used in industries requiring extreme heat resistance:
- Furnace components and heat treatment equipment
- Boiler systems and thermal processing plants
- Petrochemical and refinery high-temperature systems
- Industrial kilns and combustion chambers
- Power generation and energy equipment
- Heat exchangers and high-temperature piping systems
- Sulfur-rich and corrosive gas environments
It is a reliable high temperature stainless steel bar for industrial furnace applications.
Advantages of 446 Stainless Steel Bar
Compared to standard stainless steels, 446 round bar offers:
- Superior oxidation resistance at very high temperatures
- Longer service life in furnace and boiler environments
- Excellent resistance to scaling and sulfur attack
- Cost-effective alternative to nickel-based alloys
- Stable performance in continuous high heat exposure
It is an ideal choice for customers seeking a heat resistant stainless steel round bar supplier solution.
FAQ – 446 Round Bar
1. What is 446 stainless steel round bar?
446 round bar (UNS S44600) is a high-chromium ferritic stainless steel designed for extreme heat resistance and oxidation resistance.
2. What is 446 stainless steel used for?
It is mainly used in furnace parts, boiler systems, heat exchangers, and high-temperature industrial equipment.
3. Is 446 stainless steel good for high temperature applications?
Yes, 446 stainless steel bar performs extremely well in high-temperature and oxidizing environments, making it ideal for continuous heat exposure.
4. What makes 446 stainless steel different from 304 or 316?
Unlike 304 or 316, 446 contains much higher chromium content, giving it superior oxidation and scaling resistance at high temperatures.
5. Can 446 round bar resist corrosion?
Yes, especially in high-temperature oxidation and sulfur-containing environments, 446 performs better than most standard stainless steels.
6. Is 446 stainless steel magnetic?
Yes, 446 is a ferritic stainless steel and is magnetic.
7. What sizes are available for 446 round bar?
We supply 446 stainless steel round bar in diameters from 5mm to 300mm, with custom cutting and machining available.
Get a Quote
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Contact us now for best price and fast delivery.
Email: sales@hengyimetal.com
WhatsApp: +86 19521258704
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