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C71500 copper-nickel, also known as 70/30 copper-nickel, offers good corrosion resistance, especially in marine saltwater environments. The primary forged copper-nickel alloys selected for use in seawater service contain 10% or 30% nickel. They also have the important additions of iron and manganese, which are necessary to maintain good corrosion resistance. Although this alloy was known to the Chinese in the 9th century, it did not become popular until the 1920s when it was developed for use in the Navy's seawater condenser systems. It retains its strength well at moderate temperatures, has good cold and hot workability, and is easy to weld.
C71500 copper-nickel is used for brine piping and fittings, refrigerator and condenser components, welding wire and boiler components, brine flanges, heat exchangers and cooling units, welded backing rings, etc.
Specifications of C71500 CuNi 70-30 Copper Nickel Flange
Specifications: ASTM B151/ASTM SB151
Standards: ASTM, ASME, DIN, EN, ANSI, BS, GOST
Flange Face Type: Flate Face (FF), Raised Face (RF)
Flange Type: Welded Neck Flange, Slip On Flange, Blind Flange, Socket Welded Flange, Lap Joint Flange, etc.
Material: C71500 CuNi 70-30
Sizes: 1/2”-60”
Class: 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64, etc.
Payment Terms: T/T, L/C
Delivery Time: As per quantity ordered
Chemical Composition (%) of C71500 CuNi 70-30 Copper Nickel Flange
Mn, max |
Pb, max |
Ni |
Fe |
Zn, max |
Cu |
1.00 |
0.05 |
29.00-33.00 |
0.40-1.00 |
1.00 |
Rest |
Mechanical Properties of C71500 CuNi 70-30 Copper Nickel Flange
Tensile Strength |
Yield Strength (0.2%Offset) |
Elongation (%) |
50000 psi |
20000 psi |
30 |
Physical Properties of C71500 CuNi 70-30 Copper Nickel Flange
Density |
Melting Point |
Electrical Conductivity |
Thermal Conductivity |
Modulus of Rigidity |
Modulus of Elasticity in Tension |
0.323 lb/in3 at 68℉ |
2260℉ |
4.6% IACS at 68°F |
17 Btu/ sq ft/ ft hr/ °F at 68°F |
8300 ksi |
22000 ksi |
Pressure Rating of C71500 CuNi 70-30 Copper Nickel Flange
Temperature ℃ |
Pressure by Classes |
||||||
150# |
300# |
400# |
600# |
900# |
1500# |
2500# |
|
-29 - 38 |
20.0 |
51.7 |
68.9 |
103.4 |
155.1 |
258.6 |
430.9 |
50 |
19.5 |
51.7 |
68.9 |
103.4 |
155.1 |
258.6 |
430.9 |
100 |
17.7 |
51.5 |
68.7 |
103.0 |
154.6 |
257.6 |
429.4 |
150 |
15.8 |
50.3 |
66.8 |
100..3 |
150.6 |
250.8 |
418.2 |
200 |
13.8 |
48.6 |
64.8 |
97.2 |
145.8 |
243.4 |
405.4 |
250 |
12.1 |
46.30 |
61.7 |
92.7 |
139.0 |
231.8 |
386.2 |
300 |
10.2 |
42.9 |
57.0 |
85.7 |
128.6 |
214.4 |
357.1 |
325 |
9.3 |
41.4 |
55.0 |
82.6 |
124.0 |
206.6 |
344.3 |
350 |
8.4 |
40.3 |
53.6 |
80.4 |
120.7 |
201.1 |
335.3 |
375 |
7.4 |
38.9 |
51.6 |
77.6 |
116.5 |
194.1 |
323.2 |
400 |
6.5 |
36.5 |
48.9 |
73.3 |
109.8 |
183.1 |
304.9 |
425 |
5.5 |
35.2 |
46.5 |
70.0 |
105.1 |
175.1 |
291.6 |
450 |
4.6 |
33.7 |
45.1 |
67.7 |
101.4 |
169.0 |
281.8 |
475 |
3.7 |
31.7 |
42.3 |
63.4 |
95.1 |
158.2 |
263.9 |
500 |
2.8 |
28.2 |
37.6 |
56.5 |
84.7 |
140.9 |
235.0 |
538 |
1.4 |
16.5 |
22.1 |
33.1 |
49.6 |
82.7 |
137.9 |
550 |
- |
13.9 |
18.6 |
27.9 |
41.8 |
69.7 |
116.2 |
575 |
- |
9.4 |
12.6 |
18.9 |
28.3 |
47.2 |
78.6 |
600 |
- |
6.6 |
8.9 |
13.3 |
19.9 |
33.2 |
55.3 |
625 |
- |
5.1 |
6.8 |
10.3 |
15.4 |
25.7 |
42.8 |
650 |
- |
4.7 |
6.3 |
9.5 |
14.2 |
23.6 |
39.4 |
Equivalent Grades of C71500 CuNi 70-30 Copper Nickel Flange
STANDARD |
WERKSTOFF NR. |
UNS |
CuNi 70-30 |
2.0882 |
C71500 |
Features of C71500 CuNi 70-30 Copper Nickel Flange
- Good corrosion resistance
- Good cold and hot workability
- Easy to weld
- High hardness
- Good ductility
Application of C71500 CuNi 70-30 Copper Nickel Flange
Used in offshore, oil field, shipbuilding, water system, natural gas, pipeline engineering, electric power, etc.
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