Stainless steel angle steel is a long strip of steel that is perpendicular to each other and forms an angle. It is mainly divided into two types: equilateral stainless steel angle steel and unequal side stainless steel angle steel, among which unequal side stainless steel angle steel can be divided into unequal sides and equal thickness and unequal sides and unequal thickness.
| Product Name | Stainless Angle Steel |
| Shape | Equal/Unequal |
| Standard | AISI, ASTM, BS, DIN, GB, JIS |
| Grade | 304 304L 316 316L 301 201 430 439 444 441 409L 201 904L 2205 |
| Specification | 20*20-200*200mm |
| Thickness | 6-35mm |
| Length | 6m, 9m, 12m or as customized |
| Surface | Pickled,Black,Bright,Polishing,Blasting,etc |
| Application | Construction Field, Shipbuilding Industry, Petrole |
| Packing | In bundles |
| Delivery Time | 7-15 working days |
Duplex 2205 stainless steel (both ferritic and austenitic) is used extensively in applications that require good corrosion resistance and strength. The S31803 grade stainless steel has undergone a number of modifications resulting in UNS S32205, and was endorsed in the year 1996. This grade offers higher resistance to corrosion.
At temperatures above 300°C, the brittle micro-constituents of this grade undergo precipitation, and at temperatures below -50°C the micro-constituents undergo ductile-to-brittle transition; hence this grade of stainless steel is not suitable for use at these temperatures.
Duplex 2205, also known as UNS S32205, is a nitrogen-enhanced stainless steel. Users choose Duplex 2205 for its excellent corrosion resistance along with its high strength. It is important to note that Duplex 2205, offers much higher levels of corrosion resistance than most other austenitic stainless steels. Other benefits include:
- High resistance to pitting and crevice corrosion
- Excellent in most caustic environments
- Good weldability
Compositional ranges for grade 2205 duplex stainless steel.
| Grade | | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| 2205 (S31803) | Min Max | - 0.030 | - 2.00 | - 1.00 | - 0.030 | - 0.020 | 21.0 23.0 | 2.5 3.5 | 4.5 6.5 | 0.08 0.20 |
| 2205 (S32205) | Min Max | - 0.030 | - 2.00 | - 1.00 | - 0.030 | - 0.020 | 22.0 23.0 | 3.0 3.5 | 4.5 6.5 | 0.14 0.20 |
Mechanical Properties of duplex 2205 stainless steel
The typical mechanical properties of grade 2205 stainless steels are listed in the table below. Grade S31803 has similar mechanical properties to that of S32205.
| Grade | Tensile Str
(MPa) min | Yield Strength
0.2% Proof
(MPa) min | Elongation
(% in 50mm) min | Hardness |
| Rockwell C (HR C) | Brinell (HB) |
| 2205 | 621 | 448 | 25 | 31 max | 293 max |
Grade Specification Comparison
Table 4 provides the grade comparison for 2205 stainless steels. The values are a comparison of functionally similar materials. Exact equivalents may be obtained from the original specifications.
| Grade | UNS | EN | BS | JIS | SS |
| 2205 | S31803/S32205 | 1.4462 | X2CrNiMoN22-5-3 | 318S13 | SUS329J3L | 2377 |
Application of duplex 2205 stainless steel
This unique mix of materials makes Duplex 2205 the right choice for a number of different critical applications in a range of industries, including:
- Chemical processing, transport, and storage
- Marine and Land cargo tanks
- Biofuel production
- Food processing
- Pulp and Paper manufacturing
- Oil and gas exploration and processing
- Waste management
- High chloride environments
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