Monel® Alloy Plate (Monel 400, Monel K-500)
✓ Seawater & Acid Dominance: Resists saltwater pitting, H₂SO₄ (up to 20%), and HF (hydrofluoric acid) at 80°C (176°F) with **<0.02mm/year corrosion rate** (Monel 400).
✓ High Mechanical Strength: Monel K-500 achieves 1,100 MPa tensile strength via age-hardening – 2x stronger than Monel 400.
✓ Thermal Stability: Retains structural integrity from **-200°C (-328°F)** to 600°C (1,112°F).
✓ Precision Fabrication: Hot/cold-rolled plates with **±0.1mm thickness tolerance** and Ra ≤1.6μm surface finish for welding/machining.
Monel® Alloy Plate (Monel 400, Monel K-500)
Engineered for industries demanding exceptional resistance to seawater, acids, and high-stress environments, Monel® alloy plates combine nickel-copper matrices (Monel 400: Ni-67%, Cu-30%) to deliver unmatched performance in marine, chemical, and oil & gas applications. Certified to ASTM B127, ASME SB127, and NACE MR0175, these plates outperform stainless steel with 5x longer lifespan in saltwater, sulfuric acid, and hydrofluoric acid environments, ensuring reliability in the most corrosive conditions.
- Thickness: 0.5mm–150mm
- Sizes: 1,000mm x 2,000mm (standard) / custom-cut to 4,000mm x 2,000mm
- Surface Finishes: Pickled, Grinded (Ra ≤0.8μm), Shot Blasted
- Mechanical Properties (Monel 400): Yield Strength ≥240 MPa | Tensile Strength ≥550 MPa | Elongation ≥35% | Hardness ≤150 HB
| Parameter Category | Monel 400 | Monel K-500 |
|---|---|---|
| Material Standard | ASTM B127, UNS N04400 | ASTM B865, UNS N05500 |
| Chemical Composition (%) | Ni: 63–70, Cu: 28–34, Fe: ≤2.5, Mn: ≤2.0, Si: ≤0.5, C: ≤0.3, S: ≤0.024 | Ni: 63–70, Cu: 27–33, Al: 2.3–3.15, Ti: 0.35–0.85, Fe: ≤2.0, Mn: ≤1.5, Si: ≤0.5, C: ≤0.25 |
| Tensile Strength (MPa) | 480–620 (Annealed) | 1000–1170 (Aged) |
| Yield Strength (MPa) | ≥170 (Annealed) | ≥690 (Aged) |
| Elongation (%) | ≥35 (in 50mm gauge length) | ≥20 (in 50mm gauge length) |
| Hardness | Rockwell B65–85 | Rockwell C25–35 |
| Density (g/cm³) | 8.80 | 8.44 |
| Melting Range (°C) | 1300–1350 | 1315–1350 |
| Thermal Conductivity (W/m·K) | 21.8 (at 20°C) | 26.0 (at 20°C) |
| Thermal Expansion (10⁻⁶/°C) | 14.4 (20–300°C) | 13.9 (20–300°C) |
| Electrical Resistivity (Ω·m) | 0.48 × 10⁻⁶ | 0.51 × 10⁻⁶ |
| Corrosion Resistance | Excellent resistance to seawater, hydrofluoric acid, alkalis, and saltwater pitting. | Similar to Monel 400, with enhanced resistance to stress corrosion cracking. |
| Heat Treatment | Annealing: 870–980°C (air cooling). | Solution Treatment: 980–1040°C (water quench) + Aging: 480–620°C for 16h. |
| Surface Finishes | Hot Rolled, Annealed & Pickled, Polished (Ra ≤0.8μm). | Hot Rolled, Solution Treated, Aged, Polished. |
| Plate Dimensions | – Thickness: 5mm–100mm – Width: 1000mm–2000mm – Length: 3000mm–6000mm. | – Thickness: 5mm–50mm – Width: 1000mm–1500mm. |
| Key Applications | Marine engineering, chemical processing, heat exchanger plates, seawater valves. | High-strength marine shafts, pump impellers, oil drilling tools, aerospace fasteners. |
Monel® Alloy Plate (Monel 400, Monel K-500) Applications
| Industry | Critical Use Cases | Monel® Plate Advantage |
|---|---|---|
| Marine Engineering | Offshore platform components, propeller shafts | Zero pitting in 3.5% NaCl seawater for 20+ years. |
| Chemical Processing | Hydrofluoric acid reactors, sulfuric acid tanks | Monel 400 resists 20% HF at 50°C (122°F). |
| Oil & Gas | Subsea valve bodies, sour gas wellhead parts | Monel K-500 withstands H₂S >5,000 ppm at 150°C (302°F). |
| Power Generation | Heat exchanger plates, boiler feedwater systems | Immunity to steam erosion at 400°C (752°F). |
Monel® Alloy Plate (Monel 400, Monel K-500) Product Packaging
Our Monel® Alloy Plates (Grades 400, K-500, ASTM B127/ASME SB-127 compliant) are engineered for demanding applications in marine engineering, chemical processing, and oil & gas systems. Renowned for their exceptional resistance to seawater corrosion, sulfuric acid, and high-salinity environments, these plates are protected by industry-leading packaging and logistics protocols compliant with ASTM B865, NACE MR0175, and MIL-STD-129 standards, ensuring pristine surface quality and dimensional stability during global transit.
Anti-rust packaging
VCI gas phase anti-rust film + desiccant (12 months moisture-proof for sea transportation)
Reinforcement method
Steel strapping + wooden pallet (load-bearing ≤ 5 tons)
Surface protection
Polyethylene film layered isolation (anti-scratch)
Customization options
IPPC fumigation wooden box (compliant with ISPM15 standard)
Monel® Alloy Plate (Monel 400, Monel K-500) Shipping
Sea transport
40HQ container (loading capacity 28 tons) / bulk carrier (LCL minimum 1 ton)
Air transport
reach major airports around the world within 7 days (DDP/DAP terms)
Land transport
door-to-door within China (qualification for dangerous goods transportation)
Our Services
We guarantee global door-to-door delivery within 7–15 business days via partnerships with DHL, Maersk, and UPS.
Why Choose Us?
Where Precision Meets Partnership，25 years of focus on metal material science，Not only a supplier, but also your engineering consultant，Fast and zero compromise，Sustainable trust cycle。
Full specifications and customization
Unlimited size, support non-standard cutting. Multiple surface treatments.
Professional capabilities
25 Years Of Focus On Metal Materials Science
Certification & Quality Assurance
Products comply with international standards such as ASTM, EN, JIS, etc., and are 100% tested from raw materials to finished products
Fast delivery & global supply
Global urgent orders are delivered within 15 days. One-stop service
FAQ
Q1: How does Monel 400 differ from Monel K-500?
A: Monel 400 prioritizes corrosion resistance and formability, while K-500 (age-hardened) offers higher strength (1,100 MPa tensile) for structural applications.
Q2: What welding methods prevent hot cracking?
A: Use ENiCu-7 electrodes with TIG welding and maintain interpass temps ≤150°C (302°F) for Monel 400.
Q3: Are plates certified for offshore oil platforms?
Full compliance includes:
- NACE MR0175/ISO 15156
- ASME SB127
- DNV-OS-F101 Subsea Standards
Q4: What’s the minimum order quantity (MOQ)?
Standard stock: 1 ton MOQ.
Custom sizes/tempers: 5 tons MOQ (lead time 35 days).
Q5: How to validate material authenticity?
Scan QR codes with MonelGuard™ app to access:
- XRF validation against PMI certificates
- Third-party SGS/BV test reports
- Blockchain-validated ASTM B127 mill certs
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