ZYTC Alloy is an ISO 9001 and AS 9120B certified superalloy manufacturer and supplier, offering ASTM B127 UNS N04400 nickel copper alloy plate at factory-direct prices with full material traceability and fast global delivery. ASTM B127 specification covers rolled nickel-copper alloy (UNS N04400) plate, sheet, and strip. The material shall conform to the required chemical composition for nickel, copper, iron, manganese, carbon, silicon, and sulfur.
UNS N04400 is a nickel-copper alloy renowned for its exceptional corrosion resistance across a wide range of media, combined with high strength and good weldability. Its nominal composition is approximately 63% nickel and 30-34% copper, with minor additions of iron and manganese. This unique combination gives it characteristics superior to pure nickel or copper in many aggressive settings.
Operating Conditions & Selection CriteriaService Temperature Range: Suitable for continuous operation from cryogenic temperatures up to 538°C (1000°F); retains excellent mechanical properties at sub-zero temperatures Corrosion Resistance: Outstanding resistance to seawater, salt solutions, hydrofluoric acid (all concentrations up to boiling point), non-oxidizing acids (sulfuric, hydrochloric), and organic acids Chloride SCC Resistance: Excellent resistance to chloride-induced stress corrosion cracking Thermal Properties: Good thermal conductivity and low electrical resistivity Strengthening: Hardenable only through cold working; not heat treatable Fabricability: Good weldability and formability
Fabrication Guidelines| Process | Guidelines |
|---|
| Annealing | 700-900°C (1292-1652°F), followed by rapid cooling | | Hot Forming | 800-1000°C (1472-1832°F) | | Cold Forming | Good formability; work-hardening increases strength; intermediate annealing may be required for severe deformation | | Machining | Good machinability; use sharp tools and adequate lubrication; work-hardening tendency requires consistent feed rates | | Welding | Excellent weldability using GTAW (TIG), GMAW (MIG), and resistance welding; matching filler metal recommended |
Product Forms & Availability – UNS N04400 (Alloy 400 / Monel 400)Plate, Sheet & Strip (ASTM B127)| Product Form | Thickness Range | Condition |
|---|
| Sheet | 0.010″ – 0.187″ (0.25mm – 4.75mm) | Annealed | | Strip | 0.010″ – 0.187″ (0.25mm – 4.75mm) | Annealed | | Plate | 0.188″ – 4.000″ (4.8mm – 101.6mm) | Annealed |
Additional Alloy 400 Product Forms| Product Form | ASTM Standard | Availability |
|---|
| Seamless Tubes | ASTM B163 | Available | | Welded Tubes | ASTM B725 | Available | | Bars | ASTM B164 | Available | | Forgings | ASTM B564 | Available | | Flanges | ASTM B564 | Available | | Fittings | ASTM B366 | Available |
For all stock availability, contact Sales.
Specifications – UNS N04400 Plate| Specification | Product Form |
|---|
| ASTM B127 | Plate, sheet, strip | | ASME SB127 | Boiler code version | | ASTM B163 | Seamless tubes | | ASTM B725 | Welded tubes | | ASTM B164 | Bars | | ASTM B564 | Forgings | | UNS N04400 | Unified numbering system |
Physical Data| Chemical Composition (Weight %) | UNS N04400 Specification |
|---|
| Nickel (Ni) | 63.0 min. | | Copper (Cu) | 28.0 - 34.0 | | Iron (Fe) | 2.5 max. | | Manganese (Mn) | 2.0 max. | | Carbon (C) | 0.30 max. | | Silicon (Si) | 0.50 max. | | Sulfur (S) | 0.024 max. |
| Physical Properties | Metric | Imperial |
|---|
| Density | 8.80 - 8.83 g/cm³ | 0.318 lb/in³ | | Melting Point | 1300 - 1350°C | 2370 - 2460°F | | Modulus of Elasticity | 179 GPa | 26.0 × 10⁶ psi | | Thermal Conductivity (20°C) | 21.8 W/m·K | 151 BTU·in/hr·ft²·°F | | Coefficient of Expansion (20-100°C) | 14.1 µm/m·°C | 7.8 µin/in·°F | | Electrical Resistivity | 0.51 µΩ·m | 0.51 µΩ·m |
| Mechanical Properties (Plate – Annealed) | Metric | Imperial |
|---|
| Tensile Strength (min.) | 483 MPa | 70 ksi | | Yield Strength (0.2% offset, min.) | 172 MPa | 25 ksi | | Elongation (min.) | 35% | 35% | | Hardness (Brinell) | 110 - 132 | 110 - 132 |
Why Choose ZYTC Alloy?ZYTC Alloy is a leading AS9120B and ISO 9001 dual-certified metal supplier and manufacturer based in China. With decades of experience in the specialty metals industry, we supply high-performance nickel alloys, copper-nickel alloys, and stainless steels for critical applications in marine, chemical processing, oil & gas, and power generation. Our Advantages: ✅ AS9120B and ISO 9001 certified – quality management guaranteed ✅ Full material traceability from melt to delivery ✅ EN 10204 3.1 / 3.2 inspection certificates available ✅ NACE MR0175 compliant for sour gas service ✅ Multiple product forms: plate, sheet, strip, bar, pipe, tube, forgings ✅ Competitive factory pricing with no middlemen ✅ Fast delivery from ex-stock inventory ✅ Technical support from experienced metallurgists
Contact ZYTC Alloy Today 📧 Email: daisy@zytcsteel.com
📲 WhatsApp: +86 17335753350 For inquiries, technical datasheets, or a competitive quote, contact our sales team. We are ready to support your project with certified ASTM B127 UNS N04400 (Alloy 400) plate, sheet, and strip for marine and chemical processing applications. |
