Copper nickel alloys are known to have superior resistance to corrosion. Whilst some copper nickel grades such as 70/30CuNi or 90/10 CuNi are popular, manufacturers also produce the Cupro Nickel 80/20 Round Bar, which is an efficient alloy in itself. Like the other copper nickel alloys, the benefits of using a Copper Nickel 80/20 Round Bar does not only include marine engineering. Since this alloy has great resistance to the marine environment, including their marine-biodiversity, the ASTM B151 UNS C71000 Flat bar is a well suited match.
However, the alloy also offers properties such as thermal or heat conduction to a certain degree. This is why applications that require the generation or storage of heat as some form of energy for a prolonged time may find a use for the ASME SB151 Copper Nickel 80/20 Square Bar. Copper, in an alloyed form, loses its natural reddish orange tint, when alloyed with nickel the 80/20 Cupro Nickel Rod becomes slightly lighter because nickel is naturally silver metal.
This color also looks attractive and may be used for decorative purposes. Today, aside from being used for plumbing operations, marine engineering applications, the CUNI 80/20 Hex bar also proves useful solely as a decorative component for architecture or even for building and construction for various projects.
| Dimensions | DIN, EN, ASTM, JIS, ASME, BS, AISI |
|---|---|
| Round bar size | Diameter: 3-~800mm |
| Flat bar size | Thickness: 2 -100mm |
| Width: 10 to 500mm | |
| Angle bar size | 3mm*20mm*20mm~12mm*100mm*100mm |
| Channel Bar | 80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness |
| Rectangular Bars Section | 3.0 to 12.0mm thickness |
| Billet Size | 1/2 to 495mm Diameter |
| Rectangles Size | 33 x 30mm to 295 x 1066mm |
| Hollow Bar | 32mm OD x 16mm ID to 250mm OD x 200mm ID) |
| Dimensions | Diameter / Height: |
| Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| Finish | Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black |
| Surface | Hot Rolled Pickled, Bright, Sand Blasting Finished, Cold Drawn, Hairline,Polished |
| Condition | Hardened & tempered, annealed |
| Technique | Stainless Steel Cold Drawn, Hot Rolled, Forged Round Bar,Cold Rolled, Rod |
| Processing | Bar cutting to 650mm |
| Form | Rod, Round, Channel Bar, T-Bar, Flat Bar, Precision Ground Bar, Blocks, Square, Rings, Round Rod, Triangle, Hollow, Rectangle, Threaded, Hex (A/F), Profiles, Half Round Bar, Ingot, Billet, I/H Bar, Forging etc. |
| ELEMENT | PERCENT | ||
| NOMINAL | MINIMUM | MAXIMUM | |
| Copper | – | 74.0 | – |
| Lead | – | – | .05 |
| Iron | – | – | 1.0 |
| Zinc | – | – | 1.0 |
| Nickel (including Cobalt) | 21.0 | 19.0 | 23.0 |
| Manganese | – | – | 1.0 |
|
HEAT TREATED CONDITION |
ENGLISH UNITS |
METRIC UNITS |
|
Melting Range |
2100-2190°F |
1150-1200°C |
|
Density |
.323 lb/cu in. @ 68°F |
8.94 gm/cm@ 20°C |
|
Specific Gravity |
8.94 fixed |
8.94 |
|
Coefficient of |
.0000091 per °F (68-572°F) |
.0000164 per °C (20-300°C) |
|
Thermal Conductivity |
21 BTU/sq ft/ft/hr/°F @ 68°F |
.087 cal/sq cm/cm/sec/°C @ 20°C |
|
Electrical Resistivity |
162 Ohms circ mil per ft @ 68°F |
27 microhm – cm @ 20°C |
|
Electrical Conductivity |
6.4% Copper IACS @ 68°F |
.037 megohm cm @ 20°C |
|
Specific Heat |
.09 BTU/lb/°F @ 68°F |
..09 cal/gm/°C @ 20°C |
|
Modulus of Elasticity (tension) |
20,000 KSI |
14,100 kg/sq mm |
|
Modulus of Rigidity (torsion) |
7,500 KSI |
5,200 kg/sq mm |
|
Annealing Temperature |
1200-1500°F |
650-825°C |
| DESIGNATION | TENSILE STRENGTH |
YIELD STRENGTH |
% |
|||
| STD | FORMER | KSI* nominal |
MPa** nominal |
KSI* | MPa** | |
| – | Annealed (A) | 48 | 330 | 18 | 124 | 45 |
| H01 | Quarter Hard (1/4H) | 55-62 | 380-495 | 65 | 448 | 7.5 |
| H02 | Half Hard (1/2H) | 67-83 | 460-570 | 73 | 503 | 5.5 |
| H04 | Hard (H) | 77-92 | 530-635 | 82 | 505 | 5 |
| H08 |
Spring |
90 min 88 min |
620 min 605 min |
855 | 586 | 5 |
| H14 | Extra Spring .020 to .040 | 100-115 | 690-790 | 90 | 620 | 3 |
flat bar sizes in mm |
Flat Bar Size (inch) |
Flat Bar Thickness (mm) |
Flat Bar Thickness (in Inches) |
|---|---|---|---|
22 |
7/8 |
17 & 18 |
2/3 - 5/7 |
25 |
1 |
5 to 20 |
3/16 - 4/5 |
30 |
1-3/16 |
5 to 20 |
3/16 - 4/5 |
32 |
1-1/4 |
6 to 20 |
1/4 - 4/5 |
35 |
1-3/8 |
5 to 20 |
3/16 - 3/16 |
40 |
1-4/7 |
5 to 25 |
3/16 - 1 |
45 |
1-7/9 |
5 to 25 |
3/16 - 1 |
47 |
1-6/7 |
17,25 & 32 |
2/3, 1 & 1-1/4 |
50 |
2 |
5 to 32 |
3/16 - 1-1/4 |
55 |
2-1/16 |
5 to 25 |
3/16 - 1 |
57 |
2-1/4 |
32 |
1-1/4 |
60 |
2-3/8 |
5 to 35 |
3/16 - 1-3/8 |
63 |
2-1/2 |
10 to 30 |
3/8 - 1-3/16 |
65 |
2-5/9 |
10 to 30 & 35 |
3/8 - 1-3/16, & 1-3/8 |
70 |
2-3/4 |
6 to 25 & 40 |
1/4 - 1, & 1-4/7 |
75 |
3 |
8 to 25 |
5/16 - 1 |
80 |
3-1/8 |
8 to 20 |
5/16 - 4/5 |
90 |
3-1/2 |
8 to 20 |
5/16- 4/5 |
100 |
4 |
8, 10, 12 |
5/16, 3/8, 1/2 |
| Bar Diameter (mm) | Weight (kg/m) |
|---|---|
| 6 | 0.22 |
| 8 | 0.39 |
| 10 | 0.62 |
| 12 | 0.89 |
| 16 | 1.58 |
| 20 | 2.47 |
| 25 | 3.85 |
| 32 | 6.31 |
| 40 | 9.86 |
| 45 | 12.5 |
| 50 | 15.4 |
| 60 | 22.2 |
| 65 | 26.0 |
| 75 | 34.7 |
| 90 | 49.9 |
| 100 | 61.6 |
