Superaustenitic 904L Stainless Steel Coil SS Sheet Coil For Pharmaceutical Industry
904L Stainless Steel Sheet Coil ASTM 904L Stainless Steel Coils
904L Stainless Steel Coil Characteristics:
Alloy 904L (UNS N08904) is a superaustenitic stainless steel contains 14.0-18.0% chromium, 24.0-26.0% nickel, 4.5% molybdenum. It has good activation - passivation conversion ability, excellent corrosion resistance, in non-oxidizing acid such as sulfuric acid, acetic acid, formic acid, phosphoric acid has good corrosion resistance, , in neutral medium containing chloride ion has good pitting resistance, and has good crack corrosion resistance and stress corrosion resistance. Alloy 904L was originally developed to withstand environments containing dilute sulfuric acid. It is used extensively in the chemical process industry including the production of phosphate-based fertilizers.
Alloy 904L is easily welded and processed by standard shop fabrication practices.
904L Stainless Steel Coil Chemical Analysis Weight % (all values are maximum unless a range is otherwise indicated)
| Nickel | 23.0 min.-28.0 max. | Silicon | 1.00 |
| Chromium | 19.0 min.-23.0 max. | Phosphorus | 0.045 |
| Molybdenum | 4.0 min.-5.0 max. | Sulfur | 0.035 |
| Copper | 1.0-2.0 max. | Iron | Balance |
| Manganese | 2.00 |
904L Stainless Steel Coil Physical Properties:
|
Specific Heat |
0.11 BTU/lb-°F (32 – 212°F) 450 J/kg-°K (0 – 100°C) |
| Modulus of Elasticity | 28.0 x 106 psi 190 GPa |
| Thermal Conductivity 212°F (100°C) | 6.8 BTU/Ft-hr°F 12.9 W/m-°K |
| Melting Range | 2372 – 2534°F 1300 – 1390°C |
| Electrical Resistivity | 33.5 Microhm-in at 68°C 95.2 Microhm-cm at 20°C |
Mean Coefficient of Thermal Expansion
| Temperature Range | |||
| °F | °C | in/in °F | cm/cm °C |
| 68-212 | 20-100 | 8.5 x 10-6 | 15.3 x 10-6 |
Mechanical Properties
Typical Values at 68°F (20°C) (minimum values, unless specified)
| Yield Strength 0.2% Offset |
Ultimate Tensile Strength |
Elongation in 2 in. |
Hardness | ||
| psi (min.) | (MPa) | psi (min.) | (MPa) | % (min.) | (max.) |
| 31,000 | 220 | 71,000 | 490 | 36 | 70-90 Rockwell B |
904L Stainless Steel Coil Applications:
1) Air Pollution Control — scrubbers for coal-fired power plants
2) Chemical Processing — process equipment for the production of sulfuric, phosphoric, inorganic and organic acids and the production of phosphate-based fertilizers
3) Metallurgical Processing — pickling equipment using sulfuric acid
4) Oil and Gas Production — offshore process equipment
5) Pharmaceutical Industry — process equipment
6) Pulp and Paper — processing equipment
7) Seawater and Brackish Water — condensers, heat exchangers and piping systems
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