The following is a detailed analysis of C10300 low phosphorus oxygen-free copper, automotive splitter material Cu-HCP R240 and SE-Cu57 copper alloy:
1. C10300 low phosphorus oxygen-free copper
Material Characteristics:
Composition: Cu ≥ 99.95%, P ≤ 0.002% (very low phosphorus content), O ≤ 0.0005% (oxygen-free grade).
Conductivity: conductivity ≥ 101% IACS (close to the theoretical limit of pure copper), thermal conductivity ≥ 385 W / (m-K).
Processability: excellent hot and cold processing performance, can be drawn very fine wire (φ0.01mm or less).
Applications: high-fidelity audio wires, vacuum electron tubes, semiconductor lead frames, high-precision resistance welding electrodes.
Key advantages:
Extremely low impurity content (especially oxygen content) to avoid the risk of hydrogen embrittlement during high temperature processing.
Suitable for scenarios with stringent purity requirements (e.g. superconducting magnets, particle gas pedal components).
2. Cu-HCP R240 (automotive splitter material)
Material properties:
Conductivity ≥85% IACS, tensile strength 240-280 MPa, elongation ≥25%.
Good anti-stress relaxation properties (150℃/1000h stress retention rate ≥90%).
Composition: Cu matrix + trace P (0.015%-0.04%), may contain a small amount of Sn or Zn.
Properties:
Process: balanced strength and conductivity by cold rolling + aging treatment (e.g. HCP process).
Application Scenario:
Automotive battery management system (BMS) current shunt.
Charging pile power module, motor controller current detection unit.
Occasions that require a balance between high-precision current sampling and vibration fatigue resistance.
3. SE-Cu57 copper alloy
Material Characteristics:
Conductivity about 15-20% IACS, tensile strength 400-500 MPa, hardness ≥ 120 HB.
Good wear resistance (suitable for sliding contact) and corrosion resistance (suitable for marine environment).
Composition: Cu about 57%, the balance is mainly Zn (possibly brass type alloys), or refers to specific added elements (e.g. Sn, Fe).
Properties (assuming CuSn5 alloy):
Typical grades: In case of DIN standard SE-Cu57, it may correspond to CuZn37Pb3 (lead brass) or CuSn5 (tin bronze).
Application Scenario:
Ship propeller bearings, valve seals (seawater corrosion resistance required).
High-load gears, worm gear transmission parts (wear resistance required).
Decorative architectural hardware (e.g. handles, locks).
