ASTM A240 Stainless Plate 904L / UNS N08904 Chemical Industrial
ASTM A240 904L / UNS N08904 Stainless Steel Plate for Chemical Industrial TISCO BAOSTEEL
| Product name | 904L Stainless steel plate |
| Standard | GB,JIS,DIN,AISI,ASTM,AISI,ASME |
| Thickness | 1.5mm-50mm |
| Width | 1000,1219,1250,1500mm, or as your requirements |
| Length | 2000,2438,2500,3000,6000mm, or as your requirements |
| MOQ | 1MT |
| Surface | No.1, 2B, BA, 8K Mirror, Hairline,satin, Embossed,brush,No.4,HL,matt,pvc film,laser film. |
| Packing | standard export packing (inside:water proof paper,outside:steel covered with strips and pallets) |
| Cargo ready date | within 25-35 days after confirming orders |
| Delivery Time | About 5-7 days after receive the deposit. |
ASTM SAE AISI 904L Stainless Steel (UNS N08904)
AISI 904L stainless steel (UNS N08904) is a high alloy austenitic stainless steel. Compared with 316L, SS904L has lower carbon (C) content, higher chromium (Cr) content, and approximatively twice the nickel (Ni) and molybdenum (Mo) content of 316L, which makes it have higher high temperature oxidation resistance, pitting resistance, and resistance to reducing acid (eg, sulfuric acid). Nitrogen (N) can reduce the rate of chromium carbide precipitation, thereby reducing the sensitivity of sensitization, it also improve the resistance to pitting and crevice corrosion caused by chlorides. Especially its addition of copper (Cu) makes it useful for all concentrations of sulfuric acid.
Composition ranges of grade 904L stainless steels
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu | |
| 904L |
min. max. |
- 0.02 |
- 2 |
- 1 |
- 0.045 |
- 0.035 |
19 23 |
4 5 |
23 28 |
1 2 |
Possible Alternative Grades
The suitable alternatives to 904L stainless steels are tabulated below:
Table 5. Possible alternative grades to grade 904L stainless steels
| 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. |
Applications
Some of the major applications of grade 904L stainless steels include:
- Wiring in electrostatic precipitators
- Oil refinery components
- Seawater cooling devices
- Gas scrubbing plants
- Pulp and paper processing industries
- Acetic, phosphoric and sulphuric acid processing plants
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