ATEX Spate Cleaner TANKO-EX-S and ATEX Spray Cleaner TANKO-EX-RB
Appendix 2: Corrosion resistance of the materials
Corrosion resistance (excerpts from data sheets)
Material no. 1.4401 (AISI 316)
The corrosion resistance of 1.4401 is significantly better than that of stainless steel grades 1.4301 and 1.4307, particularly when chlorides are also present, thanks to the addition of 2 - 3% molybdenum. 1.4401 exhibits excellent corrosion resistance in natural environmental media (water, rural and urban atmospheres), as well as in industrial sectors with moderate chlorine and salt concentrations, in the food industry and the agricultural food sector. Due to its relatively high carbon content it must be taken into account that 1.4401 is not resistant to intergranular corrosion. Furthermore, it should also be pointed out that 1.4401 is not resistant to sea water.
Material no. 1.4404 (AISI 316L)
The corrosion resistance of 1.4404 is significantly better than that of stainless steel grades 1.4301 and 1.4307, particularly when chlorides are present, thanks to the addition of 2 - 3% molybdenum. 1.4404 exhibits excellent corrosion resistance in natural environmental media (water, rural and urban environments), as well as in industrial sectors with moderate chlorine and salt concentrations, in the food and pharmaceutical industries and in the agricultural food sector. Due to its low carbon content 1.4404 is even resistant to intergranular corrosion after welding. 1.4404 is not resistant to sea water!
Material no. 1.4430
1.4430 is the filler material for the base materials 1.4404 and 1.4435.
Material no. 1.4435 (AISI 316 L)
1.4435 exhibits excellent corrosion resistance in natural environmental media (water, rural and urban environments), in industrial sectors with moderate chlorine and salt concentrations, as well as in the food industry and the agricultural food sector. In addition, this grade is also resistant to various acidic media. As this material is also resistant to intergranular corrosion after welding, it complies with the following standardized test procedures: AFNOR NF 05-159 / ASTM A262-75. Practice E / DIN 50914 The higher proportion of molybdenum in 1.4435 compared to 1.4404 makes it significantly more resistant to reducing acids and chloride media.
Material no. 1.4571 (AISI 316Ti)
1.4571 exhibits good resistance to corrosion in most natural waters (urban and industrial), provided that the concentrations of chloride, salt, hydrochloric acid and organic acids are low to medium. 1.4571 exhibits excellent corrosion resistance both in the food and beverage industry, as well as in the agricultural food sector. As this grade is also resistant to intergranular corrosion after welding, it complies with the following standardized test procedures: AFNOR NF 05-159 / ASTM A262-75. Practice E / DIN EN ISO3651-2
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Appendices
Translation-Operating/Installation Instructions 2017/10
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