Grade F468M Cu 661
USA UNS C66100
Corresponding Standard ASTM F468-2012
Standard Specification for Nonferrous Bolts, Hex Cap Screws, Socket Head Cap Screws, and Studs for General Use
Classification Copper and Copper Alloys
F468M Cu 661 Chemical Element Composition Content (%)
Component Fe Si Mn Cu Pb Al Zn
Minimum Value - 2.8 - 94 0.2 - -
Maximum Value 0.25 3.5 1.5 - 0.8 0.25 1.5
① Minimum content of copper plus all other elements with specified limits shall be 99.5 %.
F468M Cu 661 Mechanical Properties
Tensile Strength
σb
ksi
Yield Point
σs
ksi
Elongation or Extension Rate
δ
%
Hardness
HBW
70~100 ≥35 ≥15 HRB
75~95

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