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| Property | Value |
|---|---|
| UNS Number | C17200 |
| ASTM Standard | ASTM B196 / B197 |
| Tensile Strength (Aged) | 1170–1370 MPa |
| Hardness (Aged) | 38–45 HRC |
| Density | 8.25 g/cm³ |
| Max Service Temperature | 230°C |
| Element | Composition (%) |
|---|---|
| Cu | bal |
| Be | 1.80–2.00% |
| Co+Ni | 0.20–0.60% |
| Fe | ≤0.15% |
| Al | ≤0.15% |
| Si | ≤0.15% |
Beryllium Copper C17200 derives its exceptional performance from a small but potent addition of beryllium, typically 1.8–2.0%, combined with nickel or cobalt for grain refinement. This alloying produces a copper-based material capable of precipitation hardening, resulting in strength levels comparable to many alloy steels while retaining copper’s inherent conductivity and non-magnetic characteristics. The controlled microstructure achieved through solution treatment and aging enables precise control over hardness, elasticity and fatigue resistance, making this alloy highly versatile for demanding fastener applications.
Fasteners manufactured from C17200 offer an outstanding combination of high strength, excellent corrosion resistance, non-sparking properties and reliable performance in elevated temperature environments up to 230°C. Its superior fatigue life, resistance to stress relaxation and non-magnetic behavior make it ideal for aerospace, oil and gas, electronics and marine industries where dependable, high-performance fastening solutions are essential.
Specifications
Beryllium Copper C17200 Fasteners combine high strength, excellent conductivity, and reliable corrosion resistance with tightly controlled dimensional specifications for precision assembly. Their technical data and mechanical properties support demanding applications where consistent performance, durability, and conformity to specified sizes and tolerances are essential.
| Property | Value |
|---|---|
| Tensile Strength | 415–500 MPa (Annealed); up to 1370 MPa (Aged) |
| Yield Strength | 170–250 MPa (Annealed); up to 1100 MPa (Aged) |
| Elongation | 35–45% (Annealed) |
| Hardness | 60–75 HRB (Annealed); 38–45 HRC (Aged) |
| Modulus of Elasticity | 117–128 GPa |
| Thermal Conductivity | 105–130 W/m·K |
| Density | 8.25 g/cm³ |
| Melting Range | 865–980°C |
| Heat Treatment | Solution Annealed + Age Hardened |
| Max Service Temperature | 230°C |
| Specification | Details |
|---|---|
| Bolt Standard | ASME B18.2.1, DIN 931/933 |
| Stud Bolt Standard | ASTM A193 (dimensional reference) |
| Nut Standard | ASME B18.2.2, DIN 934 |
| Washer Standard | ASME B18.22.1, DIN 125 |
| Thread Form | UNC, UNF, Metric Coarse & Fine |
| Diameter Range | M2 – M64 / #4 – 2.5 inch |
| Length Range | 10 mm – 300 mm |
| Available Product Forms | Bolts, Studs, Nuts, Washers, Screws |
| Custom Sizes | Available on request |
| Manufacturing & Inspection Standards | ASTM, ISO 9001, EN 10204 3.1 |
Applications
