654 SMO EN 1.4652, ASTM UNS S32654
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General characteristics 7% Mo, very high N alloyed austenitic grade. The most corrosion resistant stainless steel in the world. High mechanical strength. Useful for e.g. pressurized and erosive systems handling chlorinated sea water at higher temperatures, plate heat exchangers and flue gas cleaning applications. Typical applications Pressurized and erosive systems handling chlorinated sea water at higher temperatures Plate heat exchangers Flue gas cleaning Process equip...
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General characteristics
7% Mo, very high N alloyed austenitic grade. The most corrosion resistant stainless steel in the world. High mechanical strength. Useful for e.g. pressurized and erosive systems handling chlorinated sea water at higher temperatures, plate heat exchangers and flue gas cleaning applications.
Typical applications
- Pressurized and erosive systems handling chlorinated sea water at higher temperatures
- Plate heat exchangers
- Flue gas cleaning
- Process equipment in chemical industry
- Bleaching equipment in the pulp and paper industry
- Desalination
- Hydrometallurgy
- Food and beverage
- Pharmaceuticals
- The strength and elongation of 904L are similar to those for conventional austenitic stainless steels. The addition of nitrogen in 254 SMO®, 654 SMO® and 4565 gives higher proof strength and tensile strength.Despite the greater strength of these steels, the possibilities for cold as well as hot forming are very good.
Standard Rp0.2 Rp1.0 Rm Elongation Impact strength Rockwell HB HV MPa MPa MPa % J Product type: Cold rolled coil and sheet ASME II A SA-240 ≥ 430 ≥ 750 ≤ 250 ASTM A240 ≥ 430 ≥ 750 ≤ 250 EN 10088-2 ≥ 430 ≥ 470 750-1000 ≥ 40 IS 6911 ≥ 430 ≥ 750 ≤ 250 Product type: Hot rolled coil and sheet Typical (thickness 4 mm) EN 10088-2 ≥ 430 ≤ 470 750-1000 ≥ 40 IS 6911 ≥ 430 ≥ 750 ≤ 250 Product type: Hot rolled quarto plate Typical (thickness 15 mm) 460 490 860 60 200 EN 10088-2 ≥ 430 ≥ 470 750-1000 ≥ 40 IS 6911 ≥ 430 ≥ 750 he typical values of some physical properties are given in the table below.
Density Modulus of elasticity Thermal exp. at 100 °C Thermal conductivity Thermal capacity Electrical resistance Magnetizable kg/dm3 GPa 10-6/°C W/m°C J/kg°C µΩm 8.0 190 15 11 500 0.78 No* Density Modulus of elasticity Thermal exp. at 100 °C Thermal conductivity Thermal capacity Electrical resistance Magnetizable kg/dm3 GPa 10-6/°C W/m°C J/kg°C µΩm *) Austenitic stainless steel grades may be magnetizable to a certain degree after cold deformation, e.g. in temper rolled condition.
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