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ASTM B283 UNS C70620 Copper Nickel Alloy Flange Forged Blind Flange BLRF

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ASTM B283 UNS C70620 Copper Nickel Alloy Flange Forged Blind Flange BLRF

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Brand Name : YUHONG

Model Number : ASTM B283 C70620 Copper Nickel Alloy Blind Flange

Certification : ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008

Place of Origin : CHINA

MOQ : 1PC

Payment Terms : L/C,T/T

Delivery Time : 7 DAYS

Packaging Details : Plywood cases/ Pallets

Product Name : Blind Flange

Standard : ASTM B283, ASME SB283

Material : UNS C70620

Size : 1/2" to 48"

Class : 150# 300# 600# 900# 1500#

Flange Type : Blind flange, Weldneck flange, Slip on flange, Socket flange...

Flange Face : FF, RF, RTJ

Process : Fordging, Drilling, Machining

Application : Heat Exchanger, Pressure Vessel, Chemical Industry, etc.

High Light : ASTM B283 C70620 Forged Blind Flange , Copper Nickel Alloy Steel Flange

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ASTM B283 UNS C70620 Copper Nickel Alloy Forged Blind Flange BLRF Flange


Copper Nickel Alloy UNS C70620 exhibits excellent resistance to seawater corrosion, making it an ideal choice for marine applications. It minimizes the risk of pitting and crevice corrosion, which can compromise the integrity of the flange and connected piping systems. It also has good thermal conductivity, making them suitable for applications that may involve temperature variations, such as in heat exchangers.
The good mechanical properties including strength and ductility of C70620 can withstand various operational stresses, making it suitable for durable applications and extending the lifespan of the components.

Chemical Composition of ASTM B283 UNS C70620 Copper Nickel Alloy Blind Flange

Elements
Cu(1,2)PbZnFePNi(3)CMnS
(1) Cu value includes Ag.
(2) Cu + Sum of Named Elements 99.5% min.
(3) Ni value includes Co.
Min (%)86.5 1.0 9.0
Max (%) 0.020.501.80.0211.00.051.00.02

Mechanical Properties of ASTM B283 UNS C70620 Copper Nickel Alloy Blind Flange

FormTemperTemper CodeTensile Strength
(ksi)		YS-0.2% Offset
(ksi)		Elongation
(%)		Section Size
(in)
* Measured at room temperature, 68°F (20°C).
ForgingsAs Hot Forged - Air CooledM1040 Min15 Min30 Min
As Hot Forged - Air CooledM1045 Min18 Min30 Min6


The mian difference between copper materials

C70620 (CuNi 90/10)

  • Composition: 90% Copper, 10% Nickel

  • Corrosion Resistance: Excellent resistance to corrosion in seawater and other marine environments.

  • Strength: Moderate to high strength, good ductility, and formability.

  • Typical Uses: Marine applications, heat exchangers, piping systems.

C71500 (CuNi 70/30)

  • Composition: 70% Copper, 30% Nickel

  • Corrosion Resistance: Better than C70620 in terms of pitting and crevice corrosion, particularly in more aggressive environments.

  • Strength: Higher than C70620, providing increased tensile and yield strength.

  • Typical Uses: More demanding marine applications, condenser tubes, and chemical process equipment.

C44300 (CuNi 90/10 + Tin)

  • Composition: 90% Copper, 10% Nickel, with a small percentage of Tin.

  • Corrosion Resistance: Good, but typically less than C70620 due to lower nickel content.

  • Strength: Lower strength compared to C70620, but improved machinability.

  • Typical Uses: Used in applications requiring good formability and machinability, like some types of fittings and components.

C71500 vs. C70620

  • Corrosion Resistance: C71500 offers superior corrosion resistance in brackish water compared to C70620.

  • Mechanical Properties: C71500 has higher strength and is often used in more severe service conditions where structural integrity is crucial.

Summary

  1. Corrosion Resistance: C71500 > C70620 > C44300 (in marine environments).

  2. Strength: C71500 > C70620 > C44300.

  3. Applications: C70620 is versatile for many marine applications, while C71500 is ideal for harsher conditions. C44300 is suitable when good machinability is required.



Penetration test
ASTM B283 UNS C70620 Copper Nickel Alloy Flange Forged Blind Flange BLRF

ASTM B283 UNS C70620 Copper Nickel Alloy Flange Forged Blind Flange BLRF


Application

  • Marine Engineering: Used in shipbuilding and construction of marine equipment such as hulls, piping systems, and ballast tanks.
  • Offshore Platforms: Employed in structures that are exposed to seawater.
  • Heat Exchangers: Frequently used in systems for cooling and heating in power plants and other industrial processes.



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