Copper Nickel Alloy Flange ASTM B283 C70620 WNRF BLRF B16.5 CL150
ASTM B283 specifies requirements for forged copper and copper alloy
components, including flanges, fittings, and other
pressure-retaining parts.
The UNS C70620 alloy is a variant of the standard 90-10
Copper-Nickel (Cu-Ni) alloy (UNS C70600). While C70600 has a
well-defined composition, C70620 may include slight modifications
(possibly with adjusted iron or manganese content for improved
performance).
Typical Chemical Composition of UNS C70620 (Estimated)
Since C70620 is not as widely documented as C70600, its composition
is likely similar but may have minor adjustments. Below is a
comparison:
| Element | UNS C70600 (Standard 90-10 CuNi) | UNS C70620 (Estimated, based on variants) |
| Copper (Cu) | 86.5 - 90.0% | 86 - 90% |
| Nickel (Ni) | 9.0 - 11.0% | 9 - 11% |
| Iron (Fe) | 1.0 - 1.8% | Possibly higher (1.5 - 2.5%) |
| Manganese (Mn) | 0.5 - 1.0% | Possibly adjusted (0.5 - 1.5%) |
| Zinc (Zn) | ≤ 1.0% | ≤ 1.0% |
| Lead (Pb) | ≤ 0.05% | ≤ 0.05% |
| Other impurities | ≤ 0.5% | ≤ 0.5% |
Key Differences (Possible in C70620 vs. C70600)
- Higher Iron (Fe): May enhance erosion-corrosion resistance in
seawater.
- Adjusted Manganese (Mn): Can improve mechanical strength and
weldability.
- Tighter control on impurities for specific industrial uses.
Common Applications:
- Marine environments (seawater piping, shipbuilding).
- Oil & gas (offshore platforms, desalination plants).
- Chemical processing (corrosion-resistant piping).
Flange Specifications (if applicable):
- Type: Likely a weld neck, slip-on, or blind flange (depends on
the application).
- Pressure Rating: Typically Class 150, 300, 600, etc.(ASME B16.5
for standard sizes).
- Dimensions: Follows ASME B16.5 (for standard pipe flanges).
Weld Neck Flanges (WN Flanges) are designed for use in
high-pressure systems and are commonly used with ASTM B151 C70600
(Copper-Nickel C70600) in marine and industrial applications due to
the alloy’s excellent corrosion resistance. |
 |
Product Range:
WNRF Flanges Size : 1/8" NB TO 48"NB.
WNRF Flanges Class : 150#, 300#,400 #,600#,900#, 1500# & 2500 #.
WNRF Flanges Standard
ANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642,
DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632,
DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
B.S : BS4504 , BS4504, BS1560, BS10
Test Certificate
Manufacturer Test Certificate as per EN 10204 / 3.1B
