Compare over 30 copper, brass, and bronze alloys to find the right material for you—all with material certificates for traceability.
Extra High-Strength 172 Beryllium Copper Rods
- Yield Strength: See Table
- Hardness: See Table
- Temper:
3/8" and 5/8" dia. rods: TD04 (Hard)
All other sizes: TH04 (Hard) - Heat Treatable: Yes
- Specifications Met: ASTM B196, RWMA Class 4
Rated RWMA Class 4, 172 beryllium copper is the strongest beryllium copper alloy that is also electrically conductive and extremely wear resistant. It’s often used in inserts, die facings, and molds for plastic that need to withstand stress over repeated use. While stronger than RWMA Class 3 coppers, it has lower conductivity. 172 beryllium copper is nonsparking, so it’s safe for use in hazardous areas such as mines and oil rigs. It’s also nonmagnetic, meaning it can be used in navigational tools and computing equipment. Unlike pure copper, this alloy won’t rust when exposed to the outdoors, including marine environments.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
| Diameter | Diameter Tolerance | Yield Strength  | Hardness | 1 ft. Lg. | 3 ft. Lg. | 6 ft. Lg. | |
| 3/8" | -0.002" to 0.002" | 75,000 psi | Rockwell B95 (Medium) | 000000 | |||
| 5/8" | -0.003" to 0.003" | 75,000 psi | Rockwell B95 (Medium) | 000000 | |||
| 3/4" | -0.003" to 0.003" | 155,000 psi | Rockwell B110 (Hard) | 000000 | |||
| 1" | -0.003" to 0.003" | 155,000 psi | Rockwell B110 (Hard) | 000000 | |||
| 1 1/8" | -0.004" to 0.004" | 145,000 psi | Rockwell B110 (Hard) | 000000 | |||
| 1 1/2" | -0.004" to 0.004" | 145,000 psi | Rockwell B110 (Hard) | 0000000 | |||
| 1 5/8" | -0.004" to 0.004" | 145,000 psi | Rockwell B110 (Hard) | 0000000 | |||
| 1 3/4" | -0.004" to 0.004" | 145,000 psi | Rockwell B110 (Hard) | 0000000 | |||
| 2" | -0.004" to 0.004" | 145,000 psi | Rockwell B110 (Hard) | 00000000 | |||
| 2 1/4" | -0.0045" to 0.0045" | 145,000 psi | Rockwell B110 (Hard) | 00000000 | |||
| 2 3/4" | -0.0055" to 0.0055" | 145,000 psi | Rockwell B110 (Hard) | 00000000 |