OSNA®-10 and OSNA®-30 
cunova’s Marine Applications Division specializes in the production and supply of copper-nickel alloys for seawater piping system. Since decades, these alloys have successfully used in:
> Merchant and military shipbuilding
> Offshore oil and gas installations
> Coastal petroleum and petrochemical processing plants
> Seawater desalination plants
> Coastal electricity generation plants
Copper-nickel alloys are widely applied in:
> Seawater cooling systems
> Fire water systems
> Sanitary systems
> Deck steam pipes
> Hydraulic and pneumatic systems
> Seawater feed lines to desalination and processing units
> Splash zone cladding
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COMPARISON OF STANDARD SPECIFICATIONS FOR OSNA®-10 (CUNI 90/10) |
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cunova Alloy OSNA®-10 (CuNi 90/10) |
DIN CEN/TS 13388 CW352H |
DIN86019 WL 2.197 |
BS 2871(1) CN 102 |
DIN EN 12449 |
EEMUA 234-2016 UNS C7060X |
MIL-T-16420K ASTM B466(2) C70620 |
JIS H 3300 C7060 T |
|
Ni % |
10.0 – 11.0 |
9.0 – 11.0 |
9.0 – 11.0 |
10.0 – 11.0 |
9.0 – 11.0 |
10.0 – 11.0 |
9.0 – 11.0 |
9.0 – 11.0 |
|
Fe % |
1.5 – 1.8 |
1.0 – 2.0 |
1.5 – 1.8 |
1.0 – 2.0 |
1.0 – 2.0 |
1.5 – 2.0* |
1.0 – 1.8 |
1.0 – 1.8 |
|
Mn % |
0.6 – 1.0 |
0.5 – 1.0 |
0.5 – 1.0 |
0.5 – 1.0 |
0.5 – 1.0 |
0.5 – 1.0 |
max. 1.0 |
0.2 – 1.0 |
|
C % |
max. 0.02 |
max. 0.05 |
max. 0.05 |
max. 0.05 |
max. 0.05 |
max. 0.05 |
max. 0.05 |
max. 0.05 |
|
Pb % |
max. 0.01 |
max. 0.02 |
max. 0.01 |
max. 0.01 |
max. 0.02 |
max. 0.01 |
max. 0.02 |
max. 0.05 |
|
S % |
max. 0.005 |
max. 0.05 |
max. 0.005 |
max. 0.05 |
max. 0.05 |
max. 0.02 |
max. 0.02 |
- |
|
P % |
max. 0.02 |
max. 0.02 |
max. 0.02 |
- |
max. 0.02 |
max. 0.02 |
max. 0.02 |
- |
|
Zn % |
max. 0.05 |
max. 0.05 |
max. 0.05 |
- |
max. 0.05 |
max. 0.20 |
max. 0.05 |
max. 0.05 |
|
Sn % |
|
max. 0.03 |
- |
- |
max. 0.03 |
- |
- |
- |
|
other imp. |
max. 0.20 |
max. 0.20 |
max. 0.20 |
max. 0.30 |
max. 0.20 |
max. 0.30 |
- |
- |
|
Cu % |
rem. |
rem. |
rem. |
rem. |
rem. |
rem. |
rem. |
+Ni+Fe+Mn min 99.5 |
(1) no longer valid
(2) equal to C 70600 for subsequent welding
* the iron content has been specified to improve corrosion resistance
The OSNA ®10 offshore product range is based on:
> EEMUA –234/1-2 : 2016 Tubes Seamless and Welded (“pipes” in this web site)
> EEMUA –234/3-6 : 2016 Flanges Composite and Solid
> EEMUA –234/7-13 : 2016 Fittings
The unique dimensional range from ½ inch to 36 inch ensures the supply of the entire piping systems from one source. Although the pipe dimensions of 38 and 40 inch are not included in the EEMUA 234 – 2016 they are available here as they are commonly specified in offshore projects. Based on ASME specifications, additional components are included.