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2. Archival Disc - Wikipedia

   en.wikipedia.org/wiki/Archival_Disc

   Archival Disc (AD) is the trademarked name of a discontinued optical disc storage medium designed by Sony and Panasonic for long-term digital storage. First announced on 10 March 2014 and introduced in the second quarter of 2015, the discs were intended to withstand changes in temperature and humidity, in addition to dust and water, ensuring that the disc would be readable for at least 50 ...

3. Black oxide - Wikipedia

   en.wikipedia.org/wiki/Black_oxide

   Hot black oxide for stainless steel is a mixture of caustic, oxidizing, and sulfur salts. It blackens 300 and 400 series and the precipitation-hardened 17-4 PH stainless steel alloys. It blackens 300 and 400 series and the precipitation-hardened 17-4 PH stainless steel alloys.

4. Microwave oven - Wikipedia

   en.wikipedia.org/wiki/Microwave_oven

   The size of household microwave ovens can vary, but usually have an internal volume of around 20 liters (1,200 cu in; 0.71 cu ft), and external dimensions of approximately 45–60 cm (1 ft 6 in – 2 ft 0 in) wide, 35–40 cm (1 ft 2 in – 1 ft 4 in) deep and 25–35 cm (9.8 in – 1 ft 1.8 in) tall. [32]

5. 440C - Wikipedia

   en.wikipedia.org/wiki/440C

   440C (UNS designation S44004) is a martensitic 400 series stainless steel, [1] and has the highest carbon content of the 400 stainless steel series. It can be heat treated to reach hardness of 58 to 60 HRC. It can be used to make rolling contact stainless bearings, e.g. ball bearings and roller bearings. It is also used to make knife blades.

6. Dielectric heating - Wikipedia

   en.wikipedia.org/wiki/Dielectric_heating

   An industrial microwave tunnel oven for heating plastic parts prior to extrusion. Microwave heating, as distinct from RF heating, is a sub-category of dielectric heating at frequencies above 100 MHz, where an electromagnetic wave can be launched from a small dimension emitter and guided through space to the target.

7. Stainless steel - Wikipedia

   en.wikipedia.org/wiki/Stainless_steel

   Stainless steel, also known as inox, corrosion-resistant steel (CRES), and rustless steel, is an iron-based alloy containing a minimum level of chromium that is resistant to rusting and corrosion. Stainless steel's resistance to corrosion results from the 10.5%, or more, chromium content which forms a passive film that can protect the material ...