Welcome to Maduka Metals, your trusted partner for premium industrial materials right here in Abuja. We specialize in supplying high-performance Copper Nickel alloy hex bars, engineered to meet the demanding needs of various sectors. Our commitment is to provide not just a product, but a reliable solution backed by local expertise and a dedication to quality that ensures your projects are built on a foundation of strength and durability.
These hex bars are crafted from a copper-nickel alloy, often with additions like iron and manganese, which give them exceptional resistance to corrosion, especially in harsh marine and chemical environments. They boast impressive mechanical strength and excellent thermal conductivity, making them tough, durable, and reliable for high-stress applications. This combination of properties ensures they perform consistently under challenging conditions.
| Properties | Description |
|---|---|
| Standard | ASTM B 111 |
| Range | 5 mm To 500 mm thick in 100 mm TO 6000 mm |
| Wire Range | 50 Swg. to 4 Swg. |
| Length | 100 mm to 3660 mm Long |
| Form | Round, Square, Hex (A/F), Bush, Rectangle , Flat, Wire Mesh |
| Application | Sea water pipework, Offshore fire water systems, Heat exchangers and condensers, Sheathing of legs and risers on offshore platforms and boat hulls, Hydraulic lines, Fish cages for aquaculture, Desalination units. |
| Grade | Mn | Cu | Pb | Fe | Ni | Zn |
|---|---|---|---|---|---|---|
| 90/10 | 1.0 max | 88.6 min | 0.5 max | 1.8 max | 9-11 max | 1 max |
| 70/30 | 1 max | 65.0 min | 0.5 max | 0.4-1.0 | 29-33 | 1 max |
| Grade | Melting point | Density | Tensilestrength | Elongation | Yieldstrength(0.2%Offset) |
|---|---|---|---|---|---|
| 90/10 | 2260°F | 8.8g/cm3 | 50000 PSi | 30% | 20000PSi |
| 70/30 | 2260°F | 0.323 lb/in3 at 68°F | 50000 PSi | 30% | 20000PSi |
| CUNI Hex Bar | Size(mm) | 16 | 18 | 20 | 22 | 25 | 28 | 30 | 32 | 36 | 38 | 40 | 45 | 50 | 56 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WT / mtr (KG) | 2.05 | 2.59 | 2.49 | 3.87 | 5 | 6.27 | 7.2 | 8.19 | 10.37 | 11.55 | 12.8 | 16.2 | 20 | 25.08 | |
| WT / feet (KG) | 0.62 | 0.79 | 0.76 | 1.18 | 1.52 | 1.91 | 2.19 | 2.5 | 3.16 | 3.52 | 3.9 | 4.94 | 6.1 | 7.65 |
| Hex bar – metric sizes and weights | ||
|---|---|---|
| Size | KG’s / metre | Standard length (m) |
| 13 x 5 | 0.46 | 6.0 |
| 13 x 3 | 0.31 | 6.0 |
| 16 x 3 | 0.38 | 6.0 |
| 10 x 3 | 0.24 | 6.0 |
| 16 x 8 | 1.03 | 6.0 |
| 16 x 5 | 0.64 | 6.0 |
| 20 x 3 | 0.48 | 6.0 |
| 20 x 6 | 0.97 | 6.0 |
| 20 x 5 | 0.81 | 6.0 |
| 20 x 10 | 1.61 | 6.0 |
| 25 x 5 | 1.01 | 6.0 |
| 25 x 3 | 0.60 | 6.0 |
| 25 x 6 | 1.21 | 6.0 |
| 25 x 10 | 2.01 | 6.0 |
| 25 x 8 | 1.61 | 6.0 |
| 25 x 12 | 2.41 | 6.0 |
| 32 x 5 | 1.29 | 6.0 |
| 32 x 3 | 0.77 | 6.0 |
| 32 x 6 | 1.55 | 6.0 |
| 32 x 10 | 2.58 | 6.0 |
| 32 x 8 | 2.06 | 6.0 |
| 32 x 12 | 3.09 | 6.0 |
| 40 x 5 | 1.61 | 6.0 |
| 40 x 3 | 0.97 | 6.0 |
| 40 x 6 | 1.93 | 6.0 |
| 40 x 10 | 3.22 | 6.0 |
| 40 x 8 | 2.58 | 6.0 |
| 40 x 12 | 3.86 | 6.0 |
| 40 x 20 | 6.14 | 6.0 |
| 40 x 16 | 5.15 | 6.0 |
| 50 x 3 | 1.21 | 6.0 |
| 50 x 6 | 2.41 | 6.0 |
| 50 x 5 | 2.01 | 6.0 |
| 50 x 8 | 3.22 | 6.0 |
| 50 x 12 | 4.83 | 6.0 |
| 50 x 10 | 4.02 | 6.0 |
| 50 x 16 | 6.44 | 6.0 |
| 50 x 25 | 10.1 | 6.0 |
| 50 x 20 | 8.05 | 6.0 |
| 65 x 3 | 1.57 | 6.0 |
| 65 x 6 | 3.14 | 6.0 |
| 65 x 5 | 2.62 | 6.0 |
| 65 x 8 | 4.18 | 6.0 |
| 65 x 12 | 6.28 | 6.0 |
| 65 x 10 | 5.23 | 6.0 |
| 65 x 16 | 8.37 | 6.0 |
| 65 x 25 | 13.1 | 6.0 |
| 65 x 20 | 10.5 | 6.0 |
| Grade | UNS | Werkstoff Nr. |
| 90/10 | C70600 | 2.0872 |
| 70/30 | C71500 | 2.0882 |
Copper-nickel hex bars are sized by their diameter, typically ranging from 1/4 inch to 6 inches, with length measurements varying based on manufacturer specifications or customer requirements.
Yes, copper-nickel hex bars are customizable. They can be produced in various sizes, lengths, and finishes according to specific customer requirements. Customization options may include heat treatments, surface finishes, and alloy compositions.
Yes, copper-nickel hex bars are highly recyclable. Copper-nickel alloys retain their properties after recycling, making them an environmentally friendly option. The material can be reused in manufacturing without significant loss of quality.
Because of their unique strengths, these bars are indispensable in industries where failure is not an option. You’ll find them at the heart of critical marine systems like shipbuilding and offshore platforms, within desalination plants, and in the robust components of the oil and gas sector. Their reliability also makes them a preferred choice for manufacturing high-quality fittings, fasteners, and pumps that demand long-lasting performance against corrosion and wear.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Maduka Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Abuja, Nigeria
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