Project Description
Commitment to You
We are committed to integrate steel resources in china and serve the global steel market. We have 15+ years of experience in steel researching, production, managing and sales.
Our ability to purchase materials directly from leading mills will give you the competitive edge. Any Questions Just Call +86-731-89903933
446 is a high chromium ferritic heat resistant alloy with excellent resistance to oxidation, sulfidation and other forms of hot corrosion. 446 has a high ductile-to-brittle impact transition temperature.
Features
Oxidation resistance through 2000°F
Sulfidation resistance
Good thermal conductivity
Resistance to molten copper
Low strength
Applications
Neutral salt pot electrodes
Recuperators
Spouts for conveying molten copper alloys
Oil burner parts
Combustion chambers
Furnace and kiln linings
Stack dampers
Boiler baffles
Equivalent
STANDARD | WERKSTOFF NR. | UNS | JIS |
SS 446 | 1.4762 | S44600 | SUS 446 |
Composition
Grade | C | Mn | Si | P | S | Cr | Ni | N | |
446 | min. | – | – | – | – | – | 23.0 | – | 0.10 |
max. | 0.20 | 1.5 | 0.75 | 0.040 | 0.030 | 30.0 | 0.50 | 0.25 |
Mechanical properties
Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
Rockwell B (HR B) max | Brinell (HB) max | ||||
446 | 485 | 275 | 20 | 92 | 201 |
Sizes
Hot Rolled Process – OD 30-500mm ; WT 3-60mm ; L 6-12meter
Cold Drawn Process – OD 10-200mm ; WT 0.5-20mm ; L 1-12meter
Cold Rolled Process – OD 6-200mm ; WT 0.1-20mm ; L 1-12meter
Surface
Acid pickling – pre-passivation process of treating stainless steel parts with an acid solution, typically hydrochloric or sulfuric acid, which can remove oxide scale and heat tint while dissolving steel flecks embedded in the part.
Polishing – P grade sandpaper: P150, P200, P250, P300, P400, P500, P600, P700, P800
Inspection
Chamical analysis / Tensile test at room temperature / flattening test / ring tensile test / drift expemdomg test / ring expanding test / leak tightness test / Tensile test at elevated temperature / impact test at room temperature / impact test at low temperature / eddy current test / ultrasonic test / magnetic flux leakage test
Machinability
Machinability of the grade 446 stainless steel is possible at slow speeds with positive feeds, rigid mounts and sharp tooling surfaces.
Welding
The grade 446 stainless steel can be easily welded using most of the traditional methods except oxyacetylene welding. Type 308 welding material can be used if required, but it will not exhibit scaling resistance equal to the base metal. Differences in coefficient of thermal expansion of base and weld metal has to be taken into consideration.
Experienced 15+ Years
Our ability to purchase materials directly from leading mills at the best possible price will give you the competitive edge. This coupled with a skilled workforce dedicated to embracing the demands of the markets.
We Can Supply Follows Products with High Quality:
- Cold Rolled Steel Tube
- Cold Drawn Steel Tube
- Hollow Bar
- Honed Tube
- Plated Tube
- Plated Bar
- Boiler Tube
All Products According Quality Standard Strictly:
- ASTM: ASTM A519, ASTM A513.
- JIS:JIS G3441, JIS G3445, JIS G3466, JIS G3459.
- DIN: DIN1626, DIN1629, DIN2391, DIN2393, DIN2448, DIN2458.
- EN: EN10305.
- BS: BS6323.
Wide Range of Pipes to Fit Your Industry:
- OD from 5mm to 820mm.
- Wall Thickness from 0.1 to 100mm.
- Length up to 50mtr per pc.
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