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2. Unified numbering system - Wikipedia

   en.wikipedia.org/wiki/Unified_numbering_system

   It consists of a prefix letter and five digits designating a material composition. For example, a prefix of S indicates stainless steel alloys, C indicates copper, brass, or bronze alloys, T indicates tool steels, and so on. The first 3 digits often match older 3-digit numbering systems, while the last 2 digits indicate more modern variations.

3. List of physical quantities - Wikipedia

   en.wikipedia.org/wiki/List_of_physical_quantities

   The table usually lists only one name and symbol that is most commonly used. The final column lists some special properties that some of the quantities have, such as their scaling behavior (i.e. whether the quantity is intensive or extensive ), their transformation properties (i.e. whether the quantity is a scalar , vector , matrix or tensor ...

4. Pitting resistance equivalent number - Wikipedia

   en.wikipedia.org/wiki/Pitting_Resistance...

   In general: the higher PREN-value, the more resistant is the stainless steel to localized pitting corrosion by chloride. PREN is frequently specified when stainless steels will be exposed to seawater or other high chloride solutions. In some instances stainless steels with PREN-values > 32 may provide useful resistance to pitting corrosion in ...

5. SAE steel grades - Wikipedia

   en.wikipedia.org/wiki/SAE_steel_grades

   Type 304—the most common grade; the classic 18/8 (18% chromium, 8% nickel) stainless steel. Outside of the US it is commonly known as "A2 stainless steel", in accordance with ISO 3506 (not to be confused with A2 tool steel). [6] The Japanese equivalent grade of this material is SUS304.

6. Massachusetts would-be bride must return $70,000 ring, court ...

   www.aol.com/news/massachusetts-bride-must-return...

   Massachusetts' top court on Friday ruled that a would-be bride must return a $70,000 engagement ring from Tiffany & Co to her former fiancé in a decision that ended 65 years of courts in the New ...

7. 80-year-old died a month after bed trapped her against a wall ...

   www.aol.com/80-old-died-month-bed-182944808.html

   An 80-year-old woman died one month after her Sleep Number bed suddenly moved without warning and trapped her against a wall for two days last year, a new lawsuit alleges.