ASTM B196 Copper-Beryllium Alloy Bar
- UNS No. C17000, C17200, and C17300
- Round Rod/Bar Dia. 2.4 – 50mm
- Hexagonal & Octagonal Bar Dia.: 3 – 50mm
- Square Bar Size: 5×5-38x38mm
- Rectangular Bar Size: T: 5-38mm x W: 5-65mm
Features
ASTM B196/B196M Copper-Beryllium Alloy Bar and Rod
Chemical Composition (wt.%) of ASTM B196 Copper-Beryllium Alloy Bar
| Element | C17000 (%) | C17200 (%) | C17300 (%) |
|---|---|---|---|
| Beryllium | 1.60–1.85 | 1.80–2.00 | 1.80–2.00 |
| Nickel + Cobalt (min) | 0.20 | 0.20 | 0.20 |
| Nickel + Cobalt + Iron (max) | 0.6 | 0.6 | 0.6 |
| Aluminum (max) | 0.20 | 0.20 | 0.20 |
| Silicon (max) | 0.20 | 0.20 | 0.20 |
| Lead | – | – | 0.20–0.6 |
| Copper | Remainder | Remainder | Remainder |
Mechanical Property Requirements for Solution Heat-Treated and Solution Heat-Treated and Cold-Worked of ASTM B196 Copper-Beryllium Alloy Bar
| Temper Designation | Diameter or Distance Between Parallel Surfaces | Tensile Strength (ksi) | Yield Strength (ksi, min 0.2% offset) | Rockwell Hardness (B Scale) | Elongation (%) |
| TB00 (A) | All sizes | 60–85 | 20 | 45–85 | 20 |
| TD04 (H) | Up to 3/8 in. incl. | 90–130 | 75 | 88–103 | 8 |
| Over 3/8 to 1 in. incl. | 90–125 | 75 | 88–102 | 8 | |
| Over 1 to 3 in. incl. | 85–120 | 75 | 88–101 | 8 |
Mechanical Property Requirements After Precipitation Heat-Treatment of ASTM B196 Copper-Beryllium Alloy Bar
For Copper Alloy UNS No. C17000, C17200, and C17300:
| Temper Designation | Diameter or Distance Between Parallel Surfaces | Tensile Strength (ksi) | Yield Strength (ksi, min 0.2% offset) | Rockwell Hardness (C Scale) | Elongation (%) |
| TF00 (AT) | Up to 3 in. incl. | 150–190 | 125 | 32–39 | 4 |
| TH04 (HT) | Up to 3/8 in. incl. | 170–210 | 145 | 35–41 | 4 |
| Over 3/8 to 1 in. incl. | 170–210 | 145 | 35–41 | 2 | |
| Over 1 to 3 in. incl. | 165–200 | 135 | 34–39 | 4 |
Precipitation Heat Treatment Time of ASTM B196 Copper-Beryllium Alloy Bar
For Standard Temper Designations:
| Temper | Diameter or Distance Between Parallel Surfaces | Time at 600 to 675°F (h) |
| TB00 (A) | All sizes | 3 |
| TD04 (H) | Up to 3/4 in. incl. | 2 |
| Over 3/4 in. | 3 |
Technical Specifications
| Specification | Value |
| Standard | ASTM B196 Copper-Beryllium Alloy Bar and Rod |
| Grade | UNS No. C17000, C17200, and C17300 |
| Temper | Solution heat-treated TB00 (A), and cold-drawn hard TD04 (H), which shall be precipitation heat treated after machining or forming.
Products already precipitated by heat treated by the manufacturer shall be available in tempers TF00 (AT) and TH04 (HT). |
| Type of Bars | Hot Rolled, Cold Finished |
| Shape of Bars | Round, Hexagonal and Octagonal, Square and Rectangular |
| Density | 8.9g/cm³ |
| Diameter | Round: Dia. 2.4 – 50mm; Hexagonal & Octagonal: 3 – 50mm; Square: 5-38mm; Rectangular: T: 5-38mm x W: 5-65mm |
| Length | 1000 – 6000mm |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Tests | Chemical Analysis, Tensile Test, UT/ET |
Packing
Small diameter packed in plywood box; large diameter packed on plywood pallets.
Features
- ASTM B196/B196M copper-beryllium alloy rod and bar in straight lengths.
- Available in UNS C17000, C17200, and C17300.
- Supplied in solution heat-treated TB00 (A) and cold-drawn hard TD04 (H) conditions.
- Products can also be furnished after precipitation heat treatment in TF00 (AT) and TH04 (HT) tempers.
- High strength, good electrical conductivity, and excellent resistance to stress relaxation.
- Available in round, hexagonal, octagonal, square, and rectangular profiles.
Applications
- Aerospace fasteners, bushings, bearings, and undercarriage components.
- Electrical connectors, relays, and precision switch components.
- Automotive electrical parts, safety-system components, and durable spring elements.
- Oil and gas tools and non-sparking components for hazardous environments.
- Non-magnetic instruments and equipment used near sensitive medical or electronic systems.
- Military hardware and other high-reliability applications requiring strength plus conductivity.
