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  2. Amalgam (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Amalgam_(chemistry)

    Amalgam possesses greater longevity when compared to other direct restorative materials, such as composite. However, this difference has decreased with continual development of composite resins. Amalgam is typically compared to resin-based composites because many applications are similar and many physical properties and costs are comparable.

  3. Steel grades - Wikipedia

    en.wikipedia.org/wiki/Steel_grades

    Steel classification according to EN 10027-2.Free searchable database "European steel and alloy grades" Comparison of various steel standards Archived 2019-04-27 at the Wayback Machine; Comparison of various tool steel standards; General guide to the EN 10027 steel name and numbering systems.

  4. Amalgam (dentistry) - Wikipedia

    en.wikipedia.org/wiki/Amalgam_(dentistry)

    Amalgam is a mixture of two or more metals (alloy) with mercury which has been purified first by distillation to remove impurities. Major components of the alloy are silver, tin, and copper. The composition of the alloy powder is controlled by ISO standard for dental amalgam alloy (ISO 1559) to control the properties of amalgam. [11]

  5. Dental restoration - Wikipedia

    en.wikipedia.org/wiki/Dental_restoration

    Improvements in the understanding of the structure of amalgam post-1986 gave rise to copper-enriched amalgam alloys, which contain between 12 wt% and 30 wt% copper and at least 40 wt% silver. [12] The higher level of copper improved the setting reaction of amalgam, giving greater corrosion resistance and early strength after setting.

  6. Threaded rod - Wikipedia

    en.wikipedia.org/wiki/Threaded_rod

    Metric threaded rods are marked on the end with a color code to define the ISO strength class. The color codes are: [9] Unmarked — 4.6 class (tensile strength = 400 N/mm 2, yield strength 240 N/mm 2) Yellow — 8.8 class (800 N/mm 2, 640 N/mm 2) Green — A2 stainless steel (304) Red — A4 stainless steel (316) White — 10.9 class (1000 N ...

  7. Alloy steel - Wikipedia

    en.wikipedia.org/wiki/Alloy_steel

    Alloy steels divide into two groups: low and high alloy. The boundary between the two is disputed. Smith and Hashemi define the difference at 4.0%, [1]: 393 while Degarmo, et al., define it at 8.0%. [2]: 112 Most alloy steels are low-alloy.

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  9. Titanium alloys - Wikipedia

    en.wikipedia.org/wiki/Titanium_alloys

    By comparison, annealed type 316 stainless steel has a density of 8000 kg/m 3, modulus of 193 GPa, and tensile strength of 570 MPa. [23] Tempered 6061 aluminium alloy has a density of 2700 kg/m 3 , modulus of 69 GPa, and tensile strength of 310 MPa, respectively.