Editing Dishwasher (section)

===Other materials===
Other materials besides glass are also harmed by the strong detergents, strong agitation, and high temperatures of dishwashers, especially on a hot wash cycle when temperatures can reach {{convert|75|°C|°F|abbr=on}}.<ref name="huffpo">{{Cite web |url=https://www.huffingtonpost.com/2015/05/07/wash-dishes_n_7232216.html |title=You Should Pretty Much NEVER Wash Your Dishes By Hand. Here's Why. |last=Strutner |first=Suzy |date=2015-05-07 |website=Huffington Post |language=en-US |access-date=2017-12-30}}</ref> Aluminium, brass, and copper items will discolor, and light aluminum containers will mark other items they knock into. Nonstick pan coatings will deteriorate. Glossy, gold-colored, and hand-painted items will be dulled or fade. Fragile items and sharp edges will be dulled or damaged from colliding with other items or thermal stress. Sterling silver and pewter will oxidize and discolour from the heat and from contact with metals lower on the [[galvanic series]] such as stainless steel.<ref name="martha">{{Cite web |url=https://www.marthastewart.com/275693/dishwashing-secrets?slide=3408114 |title=Dishwashing Secrets |date=2011-02-02 |website=Martha Stewart |language=en |access-date=2017-12-30}}</ref> Pewter has a low melting point and may warp in some dishwashers. Glued items, such as hollow-handle knives or wooden [[cutting board]]s, will melt or soften in a dishwasher; high temperatures and moisture damage wood. High temperatures damage many plastics, especially in the bottom rack close to an exposed [[heating element]] (many newer dishwashers have a concealed heating element away from the bottom rack entirely). Squeezing plastic items into small spaces may cause the plastic to distort in shape. [[Cast iron]] [[cookware and bakeware|cookware]] is normally seasoned with oil or grease and heat, which causes the oil or grease to be absorbed into the pores of the cookware, thereby giving a smooth relatively non-stick cooking surface which is stripped off by the combination of alkali based detergent and hot water in a dishwasher.{{Cn|date=March 2025}}
 
Knives and other cooking tools that are made of [[carbon steel]], semi-stainless steels like D2, or specialized, highly hardened cutlery steels like ZDP189 corrode in the extended moisture bath of dishwashers, compared to briefer baths of hand washing. Cookware is made of [[austenite|austenitic]] stainless steels, which are more stable.{{Cn|date=March 2025}}
 
Items contaminated by chemicals such as wax, cigarette ash, poisons, mineral oils, wet paints, oiled tools, furnace filters, etc. can contaminate a dishwasher, since the surfaces inside small water passages cannot be wiped clean as surfaces are in hand-washing, so contaminants remain to affect future loads. Objects contaminated by [[solvent]]s may explode in a dishwasher.{{Cn|date=March 2025}}