UNS C17200 Beryllium Copper Fasteners – MTC
UNS C17200 Beryllium Copper Sample MTC Certificate
Access a comprehensive, professionally formatted Material Test Certificate according to EN 10204-2004: 3.1 for UNS C17200 (Beryllium Copper Alloy 25) fasteners. Review the documentation verifying its extreme steel-like mechanical strength, essential non-magnetic permeability, and precise precipitation hardening treatments.
What's Inside This C17200 Beryllium Copper MTC
This sample mill test certificate details the specialized parameters for UNS C17200, often known as Alloy 25. This material represents the highest strength of any copper-based alloy, rivaling high-strength alloy steels, while maintaining excellent electrical conductivity, non-sparking, and non-magnetic characteristics.
- Full Traceability: Certified with TC No.: S215/26-XX and mapped to ASTM F468 and ASTM B196 specifications for Nonferrous high-strength bolting.
- Beryllium Alloy Chemistry: Explicitly verifies the critical 1.80 - 2.00% Beryllium content. This exact ratio is what allows the copper matrix to respond to severe age hardening.
- Precipitation Hardened Temper: Confirms the material was supplied in the TH04 (Hard and Precipitation Heat Treated) condition. This thermal process radically transforms the alloy, raising its tensile strength past 1,200 MPa.
- Non-Magnetic / Non-Sparking Verification: Documents that the fasteners are fully non-magnetic (permeability less than 1.001) and inherently non-sparking, critical for downhole drilling tools, MRI machines, and explosive environments.
- Mechanical Performance: Detailed logs conforming to exceptional high-strength requirements: Tensile Strength (Min 1140 MPa), Yield Strength (Min 1000 MPa), and Rockwell Hardness mapping (Min 36 HRC).
Live Preview: UNS C17200 Beryllium Copper MTC Data
Review the specialized high-strength nonferrous parameters before downloading.
TC Number
S215/26-XX
TC Date
25.10.20XX
Material Spec
ASTM F468 / B196 UNS C17200
Bar Shape / Size
Hexagon Bar / 1/2"
Dimensions / Item
Hex Head Cap Screw 1/2"-13 x 2"
Quantity
250.00 NOS
Chemical Composition %
| Be (Beryllium) | Co + Ni | Co + Ni + Fe | Pb (Lead) | Cu (Copper) |
|---|---|---|---|---|
| 1.88 | 0.25 | 0.32 | 0.002 | Rem |
| Min: 1.80 Max: 2.00 |
Min: 0.20 | Max: 0.60 | Max: 0.02 | Balance |
Mechanical & Physical Properties (Temper TH04 / TF00)
| TENSILE STRENGTH (MPa) | YIELD STRENGTH 0.2% Offset (MPa) | % ELONGATION (GL-50mm) | HARDNESS (HRC) | ELECTRICAL COND. (% IACS) |
|---|---|---|---|---|
| 1280.50 | 1120.40 | 6.00 | 39, 40, 38 | 24.5 |
| Min: 1140 (165 ksi) | Min: 1000 (145 ksi) | Min: 3.0 | Min: 36 Max: 45 |
Min: 22.0 |
Standard References & Compliance
Our MTC certificates for nonferrous fasteners align with the stringent requirements of the oil & gas, aerospace, and medical device industries. The test reports confirm exact compliance with ASTM F468 and ASTM B196 with respect to the specific heat and lot tested.
| Standard / Requirement | Confirmation on Certificate |
|---|---|
| Visual Inspection | 100% visual inspection carried out & found free from defects. |
| Magnetic Permeability | Tested via ASTM A342. Fully non-magnetic (Permeability < 1.001). |
| Non-Sparking Suitability | Material conforms to non-sparking requirements for explosive environments. |
| Dimensional Accuracy | All Dimensions are as per PO Specification / ASME B18.2.1. |
Certification Details
We confirm that the above mentioned items were Manufactured, Sampled, Tested, and Inspected in accordance with the subjected Customer's Purchase Order and applicable Drawings, Material Specifications, Codes & Standards.
Documentation Standard
- EN 10204-2004: 3.1 Standard
- Free from radioactive contamination
- Certified ISO 9001: 2015 Company
Heat Treatments
- Solution Annealed & Cold Drawn
- Precipitation Hardened (Age Hardened)
Testing Conditions
- Mechanical tests carried out at room temp
- Magnetic permeability verified
Technical FAQs — UNS C17200 Beryllium Copper MTC
Why use Beryllium Copper instead of Alloy Steel?
UNS C17200 offers a highly unique combination of properties: it achieves the immense tensile strength of alloy steel (over 1,200 MPa) through precipitation hardening, but because its base is copper, it is inherently non-magnetic and non-sparking. This makes it an irreplaceable material for fasteners used in directional drilling (MWD/LWD) equipment, MRI machines, and explosive (ATEX) environments where steel would be unsafe.
What does "Precipitation Hardened" mean on the MTC?
Precipitation hardening (also called age hardening) is a thermal treatment. The fasteners are heated to a specific temperature and held there, allowing microscopic beryllium-rich particles to precipitate out of the solid copper matrix. These particles effectively "lock" the crystalline structure, massively increasing the metal's hardness and strength compared to its soft, annealed state.
Why is the Hardness measured in HRC instead of HRF?
Standard copper alloys (like ETP or Silicon Bronze) are relatively soft and are measured on the Rockwell B or F scales. Because Beryllium Copper achieves such extraordinary hardness (often 36-45 HRC) after age hardening, it must be measured on the Rockwell C scale—the exact same scale used to measure hardened steels and titanium alloys.