Alloys made of copper and nickel are noted for having excellent corrosion resistance. Despite the popularity of various copper nickel grades like 70/30CuNi or 90/10CuNi, producers also create the Cupro Nickel 80/20 Round Bar, which is a useful alloy in and of itself. The advantages of adopting a Copper Nickel 80/20 Round Bar extend beyond marine engineering, as with the other copper nickel alloys. The ASTM B151 UNS C71000 Flat bar is a good fit since this alloy has excellent resistance to the maritime environment, including their marine-biodiversity.
However, the alloy also has, to a certain extent, thermal or heat conduction qualities. Because of this, applications that call for the production or long-term storage of heat as energy may find usage for ASME SB151 Copper Nickel 80/20 Square Bar. Because nickel is inherently silver metal, it makes the 80/20 Cupro Nickel Rod somewhat lighter when alloyed with copper, which loses its native reddish orange hue.
This colour is also lovely and suitable for ornamental uses. The CUNI 80/20 Hex bar is now useful merely as a decorative element for architecture or even for building and construction for various projects, in addition to plumbing operations and marine engineering applications.
| 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 |
% |
|||
|---|---|---|---|---|---|---|
| Sth | 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 |
