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Hyper Eco Alloy

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Hyper Eco Alloy

Hyper Eco Alloys, Cu-Zn alloys, have higher conductivity which a conventional brass C2600 could not materialize. Our unique "Hyper Processing Technologies" and optimization of chemical compositions enable Hyper Eco Alloys provide comparable mechanical strength, spring property and bend formability to brass C2600. Moreover, stress corrosion cracking resistance, stress relaxation resistance and soldrability, which of a conventional brass C2600 could not reach customers' satisfying levels, are highly improved in Hyper Eco Alloys.
The name of Hyper Eco Alloys is an acronymderived for High Electrical Conductivity, and also is derived from Economy & Ecology since the alloys are more easily recycled than brass.

NKB032 Chemical compositions Cu-3Zn-0.2Sn New
Highlights Electric conductivity 60%IACS,Equivalent mechanical strength with brass alloys',Excellent bend formability
Applications Wire harness, PCB terminals, Busbar

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NKB083 Chemical compositions Cu-8Zn-0.3Sn New
Highlights Electric conductivity 40%IACS,Equivalent mechanical strength with brass alloys',Excellent bend formability
Applications Wire harness, PCB terminals, Busbar

For more details

See Chemical compositions and properties

Chemical compositions and properties

Copper Alloy Name Hyper Eco Alloy
NKB083 NKB032
Chemical Composition (wt%) Cu : Rest
Zn : 8.0
Sn : 0.3
Cu : Rest
Zn : 3.0
Sn : 0.2
Physical Properties Specific Gravity (g/cm3) 8.81 8.91
Modulus of Elasticity (MPa) 111,000 111,000
Electrical Conductivity (%IACS @20℃) 41 60
Poisson's Ratio 0.33 0.33
Mechanical Properties

(Typical values)
Tensile Strength (MPa) XSH O - -
1/4H - -
1/2H (410) -
H (490) (490)
EH (570) -
SH - -
ESH - -
XSH - -
0.2% Yield Strength (MPa) O - -
1/4H - -
1/2H (400) -
H (485) (485)
EH (565) -
SH - -
ESH - -
XSH - -
Elongation (%) O - -
1/4H - -
1/2H (10.0) -
H (5.0) (4.0)
EH (3.0) -
SH - -
ESH - -
XSH - -
Vickers Hardness (Hv) O - -
1/4H - -
1/2H (128) -
H (153) (153)
EH (178) -
SH - -
ESH - -
XSH - -
Bend Formability

*Badway90°W bend
Width=10mm data
Minimum Bend Radius / t Badway 1/2H 0.0 -
H 0.0 1.0
EH 1.0 -
SH - -
ESH - -