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ASTM B283 Copper Alloy C70620 (UNS C70620) Forgings, Seawater-Resistant Copper-Nickel Alloy

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ASTM B283 Copper Alloy C70620 (UNS C70620) Forgings, Seawater-Resistant Copper-Nickel Alloy

Brand Name : YUHONG

Model Number : B283 C70620

Certification : API,PED,ABS

Place of Origin : CHINA

MOQ : 1PC

Price : Negotiable

Payment Terms : T/T,L/C

Supply Ability : Depends On Quantity

Delivery Time : 7-10 Days

Packaging Details : Wooden Cases

Standard : ASTM B283 / ASME SB283

Grade : Copper Alloy C70620 (UNS C70620)

Type : Hot-Pressed Die Forgings, Custom Forgings Optional

Process : Hot Pressing, Normalizing/Annealing/Tempering, Pickling

Size Range : Customizable (Based on Forging Requirements), 50mm-500mm (Typical)

Dimensional Tolerance : Complies with ASTM B283, ±0.8mm

Surface : Pickled, Sandblasted Optional, Smooth, Rust-Free, Ra ≤ 1.6μm

Corrosion Resistance : Excellent to Seawater/Chloride Ions, Corrosion Rate ≤0.025mm/year in Flowing Seawater

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ASTM B283 Copper Alloy C70620 (UNS C70620) Forgings, Seawater-Resistant Copper-Nickel Alloy
Brief Introduction

ASTM B283 Copper Alloy C70620 (UNS C70620) is a high-performance copper-nickel alloy forging, strictly compliant with ASTM B283 / ASME SB283 standard. It is a 90% copper-10% nickel alloy (commonly known as cupronickel) with added iron elements, featuring excellent corrosion resistance (especially to seawater and chloride ions), good weldability, thermal conductivity and mechanical strength. As a hot-pressed die forging product, it is specially designed for welded applications exposed to seawater, with outstanding resistance to pitting and crevice corrosion, and can inhibit marine biological adhesion. Widely used in marine engineering, chemical, valve and pump industries, it is a reliable structural component for harsh corrosive environments, ensuring stable and long-term service.

Chemical Composition Analysis (wt%)
Alloy Grade Cu (Copper) Ni (Nickel) Fe (Iron) Zn (Zinc) Mn (Manganese) C (Carbon) P (Phosphorus) S (Sulfur)
ASTM B283 C70620 (UNS C70620) ≥86.5 9.0-11.0 1.0-1.8 ≤0.5 ≤1.0 ≤0.05 ≤0.02 ≤0.02
Typical Mechanical Properties
Mechanical Property Standard Requirement (ASTM B283) Typical Value
Yield Strength (Rp0.2), MPa ≥103 103-124
Tensile Strength (Rm), MPa ≥276 276-310
Elongation (A), % ≥30 30-40
Hardness (HB), Brinell ≤100 80-95
Impact Toughness (KV), J (20℃) ≥100 100-130
Available Tests
Test Type Standard
Chemical Composition Test (PMI) Spectrometer, ASTM B283
Tensile & Impact Test ASTM E8/E8M, ASTM A370
Hardness Test ASTM E10
Pressure Test (Hydrostatic/Pneumatic) ASTM B283
Non-Destructive Testing (NDT) UT, RT, MT, PT (ASTM E165)
Corrosion Resistance Test ASTM G48, Salt Spray Test (ASTM B117), Seawater Corrosion Test
Dimensional & Visual Inspection ASTM B283
Forging Quality Test ASTM B283, Microstructure Inspection
Product Application Scope
Industry Field Typical Applications
Marine Engineering Seawater desalination pipelines, ship components, offshore platforms, marine pump/valve forgings, seawater treatment equipment
Chemical Industry Acid conveying pipeline forgings, reactor linings, chemical containers, chloride ion-containing medium processing equipment
Valve & Pump Manufacturing Valve bodies, pump casings, valve cores, and other forging components for corrosive media
Oil & Gas Extraction Offshore oil platform pipelines, oil and gas extraction valve forgings, corrosive medium conveying components
Electronic & Electrical Connectors, relay springs, shielding covers, heat dissipation components (utilizing good thermal/electrical conductivity)
Other General engineering forgings, automotive brake system components, refrigeration equipment heat exchangers
ASTM B283 Copper Alloy C70620 (UNS C70620) Forgings, Seawater-Resistant Copper-Nickel Alloy

Product Tags:

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Wholesale ASTM B283 Copper Alloy C70620 (UNS C70620) Forgings, Seawater-Resistant Copper-Nickel Alloy from china suppliers

ASTM B283 Copper Alloy C70620 (UNS C70620) Forgings, Seawater-Resistant Copper-Nickel Alloy Images

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