chp 11

7 flashcards · Other · by Rob House

1. test: gien hsla a plan medium carbon steel and heat treatable steel allow. (or their number of carbon wt%, which is most ductile = plain. of the 4 what has highest hardenability = heat treatable

2. Factors that determine choice of casting Exam ex: multipe choice, which wuld be best casting when you do onot have money, and need lots of same simple shapes :continuous,etc.

3. Cast irons -ferrous or non ferrous) -cementite decomposes to f-______ and gr-______ -between what wt%C does cast iron have : Hint: #.0 and #.#wt%C

   A ferrous alloy (has iron as its main substance), Cementite decomposes to ferrite + graphite Most cast irons contain between 3.0 and 4.5 wt% C

4. Limitations of Ferrous Alloys

   Relatively high densities (steel is ≈ 7.9 g/cm3) Relatively low electrical & thermal conductivities Generally poor corrosion resistance

5. Plain carbon steels have what additions to them?

   none

6. Iron-based alloys are ____ and ____

   cast irons and steels