Yuhong Group Co.,Ltd
| 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 |
| Brand Name | YUHONG |
| Model Number | B283 C70620 |
| Certification | API,PED,ABS |
| Place of Origin | CHINA |
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Product Specification
| 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 |
| Brand Name | YUHONG | Model Number | B283 C70620 |
| Certification | API,PED,ABS | Place of Origin | CHINA |
| High Light | ASTM B283 copper-nickel alloy forgings ，seawater-resistant C70620 copper alloy ，UNS C70620 nickel alloy forgings | ||
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.
| 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 |
| 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 |
| 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 |
| 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 |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou... Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
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