C17200 Beryllium Copper: Highest-Strength Copper Alloy for Critical Springs
ASTM B194 · Published: 2026-06-03 · Updated: July 2026
C17200 Beryllium Copper achieves the highest strength of any copper alloy — approaching high-strength steel levels — while retaining excellent electrical conductivity (22% IACS) and non-sparking characteristics. It is used for critical springs in...
C17200 Beryllium Copper achieves the highest strength of any copper alloy — approaching high-strength steel levels — while retaining excellent electrical conductivity (22% IACS) and non-sparking characteristics. It is used for critical springs in aerospace relays, oil & gas non-sparking tools, and injection mold cores requiring high thermal conductivity.
Quick Facts
| Category | Copper Alloy |
| Standard | ASTM B194 |
| Density | 8.25 g/cm³ |
| Yield Strength | 965-1,310 MPa |
| Tensile Strength | 1,105-1,480 MPa |
Global Equivalents & Cross-Reference
| Alternative Standard / Grade | Action |
|---|---|
| CuBe2 | Compare |
| EN CW101C | Compare |
| JIS C1720 | Compare |
| GB QBe2 | Compare |
Related Materials
🧮 Material Weight Calculator
Calculate the weight based on this material's density: 8.25 g/cm³
Frequently Asked Questions
What are the safety considerations for machining beryllium copper?
Beryllium copper in solid form is safe to handle. However, machining operations that generate fine dust or fumes (grinding, welding, EDM) require ventilation and dust collection because airborne beryllium particles are toxic if inhaled. Always follow OSHA PEL (0.2 µg/m³) and use proper engineering controls.
References & International Standards
- ASTM International. Standard Specifications for Steel & Metal Alloys. astm.org
- International Organization for Standardization (ISO). Metallic Materials — Cross-Reference Database. iso.org
- American Iron and Steel Institute (AISI). Steel Grade Designations & Equivalents. steel.org
- European Committee for Standardization (CEN). EN Steel Standards & Numbering System. cencenelec.eu