Grade
| China GB | H90 |
| American ASTM | C22000 |
| European EN | - |
| Japanese JIS | C2200 |
Chemical Composition
(Weight%)
| Copper Cu | 89-91 |
| Iron Fe | ≤0.05 |
| Lead Pb | ≤0.05 |
| Tin Sn | - |
| Oxygen O | - |
| Phosphorus P | - |
| Zinc Zn | Remains |
Product Properties
H90 has good ductility, deep drawing performance, weldability, platability and good corrosion resistance.
Application Fields
● Electronics and Electrical Appliances ● LED ● Heat Dissipation Components ● Home Decoration
Fatigue Strength
Fatigue strength is the maximum stress that a material can withstand without fracture under 10^7 cycles of load, and 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 | 8.7 | g/cm³ |
| Conductivity @20℃ | 44 | %IACS |
| Electrical Conductivity @20℃ | - | MS/m |
| Thermal Conductivity @20℃ | 189 | W/(m·K) |
| Specific Heat | 0.38 | J/(g.K) |
| Elastic Modulus | 110 | GPa |
| Poisson's Ratio | - | GPa |
| Coefficient of Thermal Expansion | 18.4 | 10 -6 /K |
Mechanical Properties
| State | Tensile Strength | Yield Strength | Hardness | Elongation | |
| MPa | ksi | MPa | HV | A 50% | |
| R300(O) | ≥245 | ≥36 | -- | 65-80 | ≥35 |
| R350(1/4H) | 290-350 | 42-51 | -- | 85-110 | ≥20 |
| R410(1/2H) | 330-440 | 48-64 | -- | 100-130 | ≥10 |
| R480(H) | ≥390 | ≥57 | -- | 120-150 | ≥4 |
| R550(EH) | -- | -- | -- | -- | -- |
| 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
H90 exhibits excellent corrosion resistance in dry air and freshwater environments. It has good corrosion resistance in environments containing chlorine, ammonia, or strong acids and alkalis, but due to the presence of a small amount of zinc, slight dezincification corrosion may still occur. Surface treatments (such as plating and passivation) can further improve corrosion resistance.
Related Downloads
Kainan Group Product Brochure
Download
Message
We can recommend suitable products for you according to your needs. Please fill in the following form, and we will contact you in time!