C&B:Cu-Al-Au
masticatory force; making NPG+2 an excellent metal sub-structure for any polymer based crown and bridge resin and all other non-ceramic crown and bridge applications.
Comparative evaluations of NPG+2 and NPG in sodium chloride
static immersion tests indicate the gold addition in NPG+2 produces improved corrosion resistance. Both alloys achieve clinically acceptable corrosion protection by virtue of a firmly adhering passive oxide layer. NPG+2 is a safe and bio-compat- ible alloy you can prescribe with confidence. Its formula benefits from NPG's twenty-five years of proven clinical service. Bio-compatibility has been established by extensive in-vitro
corrosion and biological studies, while clinical evaluations have confirmed the efficacy of NPG+2. NPG+2 provides your patients with reliability, durability, value and safety.
Strength psi (MPa)
Tensile NPG+2
79,000 (546)
Strength psi (MPa)
Yield
41,500 (286)
Elongation
Percent %
16
Hardness HV1
Vickers 143
Density g/cm3
7.8
Color Yellow-Gold
Melting Range °F (°C)
1,850-1,950 (1,012-1,068)
Composition
Cu 78.7% Al 7.8% Au 2%
Ni, Fe, Zn, Mn 29
Type 3
