Cold Rolled/Hot Rolled N08904/ASTM A213/ASTM A269/ASTM A312 Flat Steel Sheet for Seawater Cooling Equipment 904L Duplex Steel Plate
ZHEJIANG ZHONGZHENG STAINLESS STEE MANUFACTURING CO. LTD. iis a special stainless steel manufacturer with 20 years of manufacturing experience.
15-7PH is a chromium-nickel-molybdenum-aluminium, semi-austenitic precipitation-hardening stainless steel used for applications requiring moderate corrosion resistance and high strength. The alloy is weldable by conventional methods, although the material has less superior weldability when compared to other PH steels, such as 17-4PH, due to the amount of aluminium included in the alloying process. The product retains its excellent mechanical properties up to temperatures of 482°C (900°F). 15-7PH is easily formed in the annealed condition and offers minimum distortion after heat treatment.
Duplex Stainless 904L Applications
▪ Wiring in electrostatic precipitators
▪ Oil refinery components
▪ Seawater cooling devices
▪ Gas scrubbing plants
▪ Pulp and paper processing industries
▪ Acetic, phosphoric and sulphuric acid proc
| Grade | Reasons for choosing grade 904L |
| 316L | A lower cost alternative, but with much lower corrosion resistance. |
| 6Mo | A higher resistance to pitting and crevice corrosion is needed. |
| 2205 | A very similar corrosion resistance, with the 2205 having higher mechanical strength, and at a lower cost to 904L. (2205 not suitable for temperatures above 300°C.) |
| Super duplex | Higher corrosion resistance is needed, together with a higher strength than 904L. |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu | |
| 904L | max. | 0.02 | 2 | 1 | 0.045 | 0.035 | 19-23 | 4-5 | 23-28 | 1-2 |
| Tensile strength Rm | 650 - 850 MPa |
| Yield point Rp0.2 | ≥ 300 MPa |
| Hardness | ≤ 260 HB |
| Elongation | ≥ 35% |
| Modulus of elasticity, E | 195 GPa |
| Density | 8.10 kg/dm³ |
| Annealing | 1050 - 1150ºC |
Available Sizes And Specifications
| 904L stainless steel plate sizes and specifications | |
| Grade | 904L |
| Cold rolled stainless steel plate | Thickness: 0.3mm- 16.0mm, Width: 1000mm - 2000mm, Length: as requirements, Surface: 2B/BA/SB/8K/HL/1D/2D etc |
| Hot rolled stainless steel sheet | Thickness: 3.0mm - 300mm, Width: 1000mm - 3000mm Length: as requirements, Surface: No.1/pickling |
| Standard | ASTM A240/A480, ASTM B688, ASTM B463/SB463, ASTM B168/SB168, ASTM B443/SB443/B424/SB424B625/SB625 B575/SB575, JIS G4303, BS 1449, DN17441, G4305 |
| Stainless steel plate | Thickness: 8.0mm - 300mm, Width: 1000mm - 3000mm Length: as requirements, Surface: No.1/pickling |

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