C17200 Copper Alloy
C17200 (Beryllium Copper / Alloy 25) is a high-strength copper alloy offering excellent hardness, fatigue resistance, and good electrical and thermal conductivity. It combines high mechanical strength with corrosion resistance and non-magnetic properties
Available Form
Round Bar
Custom Diameter & Length
Flat Bar
Custom Thickness, Width & Length
Square Bar
Custom Width & Length
Steel Plate
Custom Thickness, Width & Length
Steel Grade Comparison
| W-Nr | EN | UNS | JIS |
| 2.1247 | CW101C | C17200 | C1720 |
Chemical Composition(wt%)
| Be | Ni + Co (min.) | Ni + Co + Fe (max.) | Cu | ||
| 1.8 ~2.0 | 0.2 | 0.6 | Balance | ||
Physical Properties
Density: 8.25 g/cm³
Modulus of Elasticity: 128 GPa
Thermal Conductivity: 104 W/(m.K)
Thermal Expanision(20-200°C): 17.5 (×10-6 /K)
Heat Treatment Process
Solution Treatment: Heat to 780~800°C, hold until uniform, then quench in water immediately. (As-quenched hardness: ~120 HB)
Aging (Precipitation Hardening): Heat uniformly to 300~330°C, hold for 2~3 hours, then cool in still air. (Resulting hardness: 35~42 HRC)
Application Fields
Plastic mold inserts, mold cores, hot runner components, electrical springs, connectors, contact parts, bellville washers, instrument bearings, aerospace bushings.
Disclaimer: the information and data presented herein are typical values for reference and are not intended as warranties to readers.