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Metallic Engineering Materials
Alloying Elements
21
Engineering
Undergraduate 2
10/20/2013

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Cards

Term
Carbon
Definition
• 10xx - Carbon Steel
• 11xx - Resulfurized Carbon Steel
Term
Manganese
Definition
13xx
15xx
Term
Nickel
Definition
23xx
25xx
Term
Nickel-chromium
Definition
31xx
33xx
Term
Molybdenum
Definition
40xx (.25% Mo)
41xx (Cr .5-.95%, Mo .12-.2%)
43xx (Ni 1.8%, Cr .5% or .8%, Mo .25%)
46xx (Ni 1.8%, Mo .25%)
48xx (Ni 3.5%, Mo .25%)
Term
Chromium
Definition
51xx
52xxx (Cr 1.45%)
Term
Chromium-vanadium
Definition
61xx
Term
Aluminum (Al)
Definition
Aids nitriding
Restricts chain growth
Removes oxygen in steel melting
Term
Sulfur and Phosphorous (S & P)
Definition
Adds machinability
Reduces weldability, ductility, and toughness
Term
Chromium (Cr)
Definition
increases resistance to corrosion and oxidation
Increases hardenability (significantly)
Increases high-temperature strength
Can combine with carbon to form hard, wear-resistance microconstituents
Term
Nickel (Ni)
Definition
Promotes an austentic structure
Increases hardenability (mildly)
Increases Toughness
Term
Copper (Cu)
Definition
Promotes tenacios oxide film to aid atmosphereic corrosion resistance
Too much is a bad thing
Term
Manganese (Mn)
Definition
Increases hardenability, lowers hardening temperature
Promotes an austenitic structure
Combines with sulfur to reduce it adverse effects
Term
Silicon (Si)
Definition
Removes oxygen in steelmaking
Improves toughness
Increases hardenability
Term
Molybdenum (Mo)
Definition
promotes grain refinement
Increases hardenability
Improves high-temperature strength
Term
Vanadium (V)
Definition
Promotes grain refinement
Increases hardenability
Will combine with carbon to form wear-resistant microconstituents
Term
Boron (B)
Definition
Added in small amounts increases hardenability
Term
Lead (Pb)
Definition
aids machinability
Term
Nitrogen (N)
Definition
Acts like carbon in strengthening
Term
Promote Austenite formation
Definition
Mn, Ni, N, Co, Cu, & C
Term
Promote Ferrite Formation
Definition
Cr, Mo, V (vanadium), W (tungsten), Ti (titanium), Zn (Zinc), Cb, Ta (tantalum), Si (silicon)
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