C19010 is a high-performance copper-nickel-silicon alloy supplied by Shanghai Xinye Metal Material Co., Ltd. Precisely alloyed with Nickel (Ni), Silicon (Si), and Phosphorus (P), this material offers an exceptional combination of high strength, elasticity, and excellent electrical conductivity. It is widely recognized for its superior resistance to stress relaxation and stress corrosion, making it the ideal material for advanced electrical components and automotive applications.
💡 Upgrade Recommendation: If your application requires even higher strength and performance, we highly recommend C7025, which serves as a comprehensively upgraded alternative to C19010.
Comparison of core chemical elements between C19010 and the upgraded C7025 (ASTM Standards):
| Alloy (ASTM) | Copper (Cu) | Nickel (Ni) | Silicon (Si) | Phosphorus (P) | Others |
|---|---|---|---|---|---|
| C19010 | Balance | 0.8 - 1.8% | 0.15 - 0.35% | 0.01 - 0.05% | - |
| C70250 (C7025) | Balance | 2.2 - 4.2% | 0.25 - 1.2% | - | Mg: 0.05 - 0.30% | Zn: ≤ 1.0% |
Detailed breakdown of Hardness, Tensile Strength, and Elongation across different tempers:
| Temper | Hardness (HV) | Tension Test | ||
|---|---|---|---|---|
| Tensile Strength Rm (MPa) | Yield Strength Rp0.2 (MPa) | Elongation A50 (%) | ||
| C19010 Mechanical Properties | ||||
| TM02 | 120 - 155 | 410 - 490 | ≥ 320 | ≥ 14 |
| TM04 | 145 - 175 | 490 - 550 | ≥ 410 | ≥ 11 |
| TM08 (R580) | 170 - 200 | 580 - 650 | ≥ 540 | ≥ 8 |
| C7025 Upgrade Alternative (For Reference) | ||||
| TM02 | 190 - 240 | 655 - 780 | ≥ 585 | ≥ 8 |
| TM06 | 250 - 290 | 800 - 880 | ≥ 780 | ≥ 1 |
| Property | Metric Units | English / Other Units |
|---|---|---|
| Electrical Conductivity | 31 MS/m | 53 %IACS (Typical: 50%IACS) |
| Thermal Conductivity | 250 W/(m·K) | 144 Btu·ft/(ft²·h·°F) |
| Thermal Expansion Coefficient | 16.8 × 10⁻⁶/K (0 to 300 °C) | 9.3 × 10⁻⁶/°F |
| Density | 8.89 g/cm³ | 0.321 lb/in³ |
| Modulus of Elasticity | 127 GPa | 18,400 ksi |
C19010 is widely applied in automotive and electrical engineering sectors:
1. Softening Resistance at Elevated Temperatures
After thermal treatment (e.g., R580/TM08 temper), C19010 demonstrates exceptional softening resistance. When exposed to high-temperature environments of 400°C, 450°C, and 500°C for up to 30 minutes, it maintains highly stable Vickers hardness values.
2. Excellent Stress Relaxation Resistance
Calculated via the Larson-Miller parameter on annealed specimens parallel to the rolling direction, C19010 exhibits a remarkably high residual stress retention rate. Even under long-term, high-temperature service conditions, it sustains reliable spring force and contact pressure, making it indispensable for high-precision shrapnel and high-reliability automotive terminals.
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