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Copper Nickel Hex Bar

Copper nickel hex bar specifications

What are the benefits of using high-quality 70/30 Copper Nickel Hex Bar in marine environments?

A 70/30 copper-nickel composition, with additions of iron and manganese, makes this material distinctive in strength and corrosion resistance. A copper nickel hex bar works in marine applications like hydraulic piping, seawater cooling, and boat parts. It also functions in cargo tank heating coils and feed lines to desalination plants.

A Werkstoff 2.0872 hex bar does not undergo corrosion when faced by seawater (chloride ions), resisting stress-corrosion cracking. It delivers durable performance, high tensile strength, and fatigue resistance.

CUNI 90/10 hexagon bars stockists in Mumbai


Specification of copper nickel hex bar

Specifications Size Finish
ASTM B-151, ASTM B-122 5mm - 500mm Bright, rough turned, centreless ground, polish
Tolerance Condition Form
H8, H10, H12, H9, K10, K12, H11, H13, K9, K11, Cold drawn, annealed, centreless ground Hex bar, hexagonal bar
American standards Technique Services
ASTM/ JIS/ ASME/ AISI/ EN/ BS Hot rolled, cold Rolled, forged, cold drawn Bending, welding, decoiling, cutting

We provide best quality of copper nickel 70/30 hex bar, to check our inventory, visit us

Can a 70/30 Copper Nickel Hex Bar pass the Huey test? What factors can impact its performance?

Buyers must ensure that the UNS C71500 hex bar they procure for their application has undergone requisite testing. The Huey test is standard to judge the vulnerability to intergranular corrosion. It uses nitric acid (65%) and five cycles to deduce the final corrosion rate.

An oft-used pass/fail criterion is 0.7 or 0.8mm/y (the corrosion rate). A copper nickel 90/10 hex bar, with documented resistance to many abrasive agents, can pass this challenging test. However, the buyer should state the pass/fail metrics in the purchase guidelines. The performance of a DIN 2.0882 hex bar depends on the protective coating, improper heat treatment, the presence of impurities, etc.

Types of cuni 90/10 hex bar


Copper Nickel Hexagonal Bar

Copper Nickel Hexagonal Bar

90/10 Copper Nickel Hex Bar

90/10 Copper Nickel Hex Bar

70/30 Copper Nickel Hex Bar

70/30 Copper Nickel Hex Bar

cuni hexagon bars

Cuni hexagon bars

We use advanced polishing techniques to achieve a high-quality surface finish on wnr 2.0872 hexagonal bar

What are the unique properties of a 70/30 Copper Nickel Hex Bar that make it suitable for marine applications?

Marine environments are demanding for several reasons; the foremost is high corrosion risk. A Cuni hexagon bar with a 70-30 composition can resist general and localized corrosion in these settings, tolerating attacks from salty water without losing strength. It also possesses helpful additional properties:

  • It resists biofouling, i.e., the growth of microbes and algae
  • Can handle high flow velocities
  • Does not get impacted by severe temperatures (up to 1038° C)

A copper nickel 70/30 hex bar frequently operates in shipbuilding, fire fighting, offshore oil drilling, and chiller systems. But customers can also choose a 90-10 composition of copper and nickel. A UNS C70600 hex bar is perfectly competent at reasonable prices.

Surface finishes of CUNI 70-30 hex bar


HF Hot finished CG Centreless ground
SRE Slit rolled edge BD Bright drawn
HRAP Hot rolled annealed / pickled CF Cold finished
PR Peeled / reeled ST Smooth turned
RT Rough turned / peeled P&T Peeled / turned
P Polished CD Cold drawn
To view the range of sizes we offer for UNS C70600 70/30 hex bar, please refer our specification tables

Size chart of cunifer 90/10 hexagon bar


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

Chemical composition of cupro nickel 70-30 hex bar


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

Mechanical properties of cunifer hexagon rod


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
To read about the chemical and mechanical properties of DIN 2.0882 hex bars , please refer our technical data sheets

Equivalent grade of cupro nickel 90-10 hexagon bar


Grade UNS Werkstoff Nr.
90/10 C70600 2.0872
70/30 C71500 2.0882

Conditions of CUNI hex bar


ANN Annealed
H&T Hardened and tempered.
PH Precipitation hardened.

Applications of cupro nickel 90-10 hex bar


  • → Petrochemical Industry
  • → Chemical Industry
  • → Power Plant Industry
  • → Oil and Gas Industry
  • → Pharmaceuticals Industry
  • → Energy Industry
  • → Food Processing Industry
  • → Pulp & Paper Indusry
  • → Refining Industry
  • → Aerospace Industry