UNS C67500 Manganese Bronze Fasteners – MTC
UNS C67500 Manganese Bronze Sample MTC Certificate
Access a comprehensive, professionally formatted Material Test Certificate according to EN 10204-2004: 3.1 for UNS C67500 (Manganese Bronze) fasteners. Review the documentation verifying its high-strength chemistry, excellent wear resistance in heavy-duty structural applications, and mechanical properties.
What's Inside This C67500 MTC Certificate
This sample mill test certificate details the specific parameters required for UNS C67500 fasteners. Frequently called "High-Strength Manganese Bronze," this alloy is engineered to provide superior tensile strength, hardness, and wear resistance, making it an essential material for heavy-duty fasteners in structural marine, industrial, and power-generation applications.
- Full Traceability: Certified with TC No.: S335/26-XX and mapped to ASTM F468 and ASTM B138 specifications for high-strength nonferrous bolting materials.
- Manganese-Alloying Chemistry: Explicitly verifies the critical chemistry: Copper base (58%) with Zinc (39%), Manganese (1.5%), and minor additions of Iron, Tin, and Aluminum. This specific balance enables high-strength hot-forging capability.
- Extreme Structural Strength: Known for its ability to match the strength of many alloy steels while maintaining copper's characteristic corrosion resistance, this MTC logs high Tensile (min 585 MPa) and Yield (min 310 MPa) strengths.
- Wear & Corrosion Resistance: The alloy is highly resistant to heavy-duty wear and the erosion/corrosion effects found in aggressive industrial environments.
- Quality Compliance: 100% visual inspection and precision dimensional checks executed to ASME B18.2.1 standards.
Live Preview: UNS C67500 Manganese Bronze MTC Data
Review the specialized high-strength mechanical and chemical parameters before downloading.
TC Number
S335/26-XX
TC Date
10.05.20XX
Material Spec
ASTM F468 / B138 UNS C67500
Bar Shape / Size
Round Bar / 24 mm
Dimensions / Item
Heavy Hex Bolt M24-3.0P x 100 mm
Quantity
200.00 NOS
Chemical Composition %
| Cu (Copper) | Mn (Manganese) | Fe (Iron) | Sn (Tin) | Zn (Zinc) |
|---|---|---|---|---|
| 58.50 | 1.50 | 1.05 | 0.85 | Rem (38.10) |
| Min: 57.0 Max: 59.0 |
Min: 0.8 Max: 2.0 |
Min: 0.8 Max: 1.5 |
Min: 0.5 Max: 1.5 |
Remainder |
Mechanical Properties
| TENSILE STRENGTH (MPa) | YIELD STRENGTH 0.5% Ext (MPa) | % ELONGATION (GL-50mm) | HARDNESS (HRB) |
|---|---|---|---|
| 610.50 | 335.20 | 16.00 | 85, 87, 86 |
| Min: 585 (85 ksi) | Min: 310 (45 ksi) | Min: 12 | Typical: 80-95 |
Standard References & Compliance
Our MTC certificates for high-performance nonferrous fasteners align with the stringent requirements of the offshore, marine structural, and heavy industrial machinery sectors. The test reports confirm exact compliance with ASTM F468 and ASTM B138 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. |
| Structural Performance | Tested to ensure high tensile and yield strength for load-bearing use. |
| Magnetic Permeability | Material is confirmed Non-Magnetic for marine use. |
| 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
Processing State
- Hot Forged / Drawn
- Stress relieved for industrial structural service
Testing Conditions
- Mechanical tests carried out at room temp
- 100% visual inspection carried out
Technical FAQs — UNS C67500 Manganese Bronze MTC
Why is this alloy called "Manganese Bronze" despite being mostly Zinc?
This is a common misnomer in metallurgy. Manganese Bronze is technically a high-strength, complex brass. It contains significant Zinc but is alloyed with Manganese, Iron, Tin, and Aluminum to achieve high strength. The "Manganese" name is used because the element is added specifically to enhance both the strength and the microstructural integrity of the cast or forged alloy.
How does C67500 perform in marine environments compared to Silicon Bronze?
While both are top-tier marine alloys, C67500 (Manganese Bronze) is typically chosen when higher tensile strength is the primary requirement. It outperforms most other bronzes in strength and hardness, making it ideal for structural fasteners in ships, bridges, and offshore platforms that need to handle substantial physical loads in addition to seawater corrosion.
Is C67500 suitable for high-speed, load-bearing applications?
Yes. Because of its high hardness and Alpha-Beta metallurgical structure, C67500 has excellent wear resistance. It is often used in industrial machinery for fasteners or bushings that must move or support heavy loads while exposed to harsh environments, as it resists galling better than almost any other brass alloy.