High-precision Copper Strip

Grade

China GB H65
American ASTM C26800
European EN -
Japanese JIS C2680

Chemical Composition

(Weight%)

Copper Cu 63-68.5
Iron Fe ≤0.07
Lead Pb ≤0.09
Tin Sn -
Oxygen O -
Phosphorus P -
Zinc Zn Remains

Product Properties

H65 has good ductility, deep drawing performance, weldability, platability, and corrosion resistance.

Application Fields

● Electronics and Electrical Appliances ● LED ● Heat Dissipation Components ● Home Decoration

Fatigue Strength

Fatigue strength is the maximum stress a material can withstand without fracturing under 10^7 cycles of load. It is related to the state of the selected material. Usually, the fatigue strength is about 1/3 of the tensile strength. For fine-grained solid solution alloys, the fatigue strength can be increased to 1/2 of the tensile strength.

Physical Properties

Density 8.5 g/cm³
Conductivity @20℃ 27 %IACS
Electrical Conductivity @20℃ - MS/m
Thermal Conductivity @20℃ 116 W/(m·K)
Specific Heat 0.38 J/(g.K)
Elastic Modulus 105 GPa
Poisson's Ratio - GPa
Coefficient of Thermal Expansion 20.3 10 -6 /K

Mechanical Properties

State Tensile Strength Yield Strength Hardness Elongation
  MPa ksi MPa HV A 50%
R300(O) ≥290 ≥42 -- ≤90 ≥40
R350(1/4H) 380-430 55-62 -- 100-120 ≥35
R410(1/2H) 400-480 58-70 -- 110-150 ≥25
R480(H) 440-560 64-81 -- 140-170 ≥15
R550(EH) 520-620 75-90 -- 160-190 ≥4
R630(SH) -- -- -- -- --

*For reference only

Bending Performance

State 90°R/T 180°R/T
  Good Way Bad Way Good Way Bad Way
R350(1/4H) -- -- -- --
R410(1/2H) Good Good Good Good
R480 -- -- -- --

*Test sample width 10mm thickness ≤0.5mm

Corrosion Resistance

H65 has good corrosion resistance in dry air and freshwater environments. It is prone to dezincification corrosion and stress corrosion cracking in environments containing chlorine, ammonia, or strong acids and alkalis. Corrosion resistance can be improved through surface treatments (such as plating and passivation).

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