K500 Monel® Alloy Coil | High-Strength Corrosion Resistance for Demanding Forming Applications
✓ Seawater Invincibility: 0.0008mm/year corrosion rate in seawater, resisting pitting, crevice corrosion, and biofouling.
✓ Ultra-High Strength: Age-hardened to yield strength ≥750 MPa – ideal for high-pressure, deep-sea applications.
✓ Hydrogen Sulfide Immunity: Survives H₂S >1,500 ppm + CO₂ at 150°C (302°F) per NACE TM0177.
✓ Precision Cold Rolling: Tight tolerance ±0.03mm thickness with Ra ≤0.4μm surface finish for seamless stamping and forming.
K500 Monel® Alloy Coil (UNS N05500)
Engineered to deliver exceptional strength and marine-grade corrosion resistance, K500 Monel® alloy coil combines a nickel-copper matrix (Ni-63%, Cu-29%, Al-2.7%, Ti-0.6%) with age-hardening to achieve 3x the yield strength of Monel 400, while maintaining superior resistance to seawater, hydrogen sulfide, and sulfuric acid. Certified to ASTM B865, ASME SB-865, and NACE MR0175, this alloy is the ultimate choice for marine, aerospace, and oil & gas industries requiring high-performance, formable materials for extreme environments.
- Thickness: 0.5mm–12mm (cold-rolled) / 3mm–25mm (hot-rolled)
- Width: 300mm–2,000mm (slitting tolerance ±0.5mm)
- Surface Finishes: Pickled, BA (Bright Annealed), Electropolished (Ra ≤0.4μm)
- Mechanical Properties: Yield Strength ≥750 MPa | Tensile Strength ≥1,000 MPa | Elongation ≥20%
| Parameter Category | Value/Description |
|---|---|
| Material Standard | ASTM B865 (Precipitation-Hardened), ASME SB865, EN 2.4375 |
| Chemical Composition (%) | Ni 63–70, Cu 27–33, Al 2.3–3.15, Ti 0.35–0.85, Fe ≤2.0, Mn ≤1.5, C ≤0.25, Si ≤0.5, S ≤0.01 |
| Tensile Strength (MPa) | – Annealed: ≥760 – Aged: ≥1100 |
| Yield Strength (MPa) | – Annealed: ≥300 – Aged: ≥790 |
| Elongation (%) | – Annealed: ≥35 – Aged: ≥20 (in 50mm gauge length) |
| Hardness | – Annealed: Brinell (HBW) ≤250 – Aged: Brinell (HBW) 300–400 |
| Density (g/cm³) | 8.44 |
| Melting Range (°C) | 1315–1350 |
| Thermal Conductivity (W/m·K) | 21.4 (at 20°C) |
| Thermal Expansion (10⁻⁶/°C) | 13.7 (20–100°C) |
| Electrical Resistivity (Ω·m) | 0.54 × 10⁻⁶ (at 20°C) |
| Elastic Modulus (GPa) | 179 |
| Magnetic Permeability | Non-magnetic |
| Corrosion Resistance | Excellent resistance to seawater, hydrofluoric acid (HF), sulfuric acid (H₂SO₄), chlorides, and stress corrosion cracking (SCC). Comparable to Monel 400 but with enhanced strength. Avoid oxidizing acids (e.g., HNO₃). |
| Heat Treatment | – Solution Annealing: 870–980°C (rapid cooling) – Aging: 480–620°C for 4–16 hours. |
| Surface Finishes | Cold-rolled bright annealed (BA), Pickled & Passivated, Polished (Ra ≤0.6μm). |
| Coil Dimensions | – Thickness: 0.5mm–6.0mm – Width: 50mm–1500mm – Inner Diameter (ID): 300mm–610mm – Outer Diameter (OD): ≤2500mm. |
| Key Applications | Marine springs, high-strength fasteners, oil & gas valve components, seawater pump impellers, aerospace fittings. |
K500 Monel® Alloy Coil (UNS N05500)
| Industry | Critical Use Cases | K500 Monel® Coil Advantage |
|---|---|---|
| Marine Engineering | Subsea fasteners, deep-sea riser components | 0.0005mm/year corrosion rate in 3.5% NaCl seawater at 30°C. |
| Oil & Gas | Sour gas compressor blades, downhole tools | Survives H₂S >2,000 ppm + CO₂ at 150°C (302°F). |
| Aerospace | Hydraulic tubing, fuel system components | Withstands salt spray (ASTM B117) and high-cycle fatigue. |
| Chemical Processing | Sulfuric acid evaporator coils, reactors | Immune to 70% H₂SO₄ at 50°C (122°F). |
K500 Monel® Alloy Coil (UNS N05500) Product Packaging
K500 Monel® Alloy Coil (UNS N05500) (UNS N04400/N05500, ASTM B865/ASME SB-865 compliant) are engineered for superior performance in seawater, sulfuric acid, and high-temperature steam environments. To ensure flawless coil integrity and surface quality during global transit, we deploy advanced packaging systems and logistics protocols tailored for coiled products, meeting NACE MR0175, DNVGL-RP-0419, and IMO standards.
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)
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 specification coverage & flexible customization
Unlimited size: thickness 0.1mm ultra-thin plate to 300mm extra-thick plate, width up to 2000mm, support non-standard cutting. Various surface treatments: 2B, BA mirror, brushed (No.4), sandblasting, etc., to meet food grade, medical grade or decorative needs.
Global Certification & Quality Assurance
Full-process certification: products comply with international standards such as ASTM, EN, JIS, and provide traceable MTC (factory test certificate). Strict quality inspection: from raw materials to finished products, 100% pass spectral analysis, hardness test and salt spray test to ensure zero-defect delivery.
Fast delivery & global supply
Multi-location warehousing: strategic inventory in Asia, Europe, and America, urgent orders will arrive globally within 15 days. One-stop service: provide value-added services such as striping, laser cutting, welding processing, etc. to shorten customer production cycle.
Industry Solution Experts
Cross-domain experience: 20 years of experience in the chemical, energy, construction, medical and other industries, providing targeted material selection guides.
Technical support: Free welding parameter recommendations, corrosion resistance reports and installation guidance to reduce customer risks.
Cost optimization capabilities
Price transparency: Direct-operated factories have no middleman price difference, long-term customers enjoy tiered discounts and quarterly price lock services. Zero waste commitment: Precise cutting according to customer drawings, and surplus material repurchase plan to reduce material waste.
Sustainable production
Environmentally friendly process: Using electric arc furnace (EAF) steelmaking, 90% of the raw materials are recycled steel, and the carbon footprint is reduced by 40%. Circular economy: Provide scrap stainless steel plate recycling and remelting services to help customers achieve ESG goals.
K500 Monel® Alloy Coil (UNS N05500) 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.
FAQ
Q1: How does K500 differ from Monel 400 coils?
A: K500 adds aluminum and titanium for age-hardening, achieving 750 MPa yield strength (vs. Monel 400’s 240 MPa) while retaining seawater corrosion resistance.
Q2: What post-forming heat treatment is required?
A: Age-harden coils at 480–620°C (900–1150°F) for 4–8 hours to restore full strength after stamping or welding.
Q3: Are coils certified for aerospace applications?
Full compliance includes:
- AMS 4676 for aerospace components
- DNVGL-OS-F101 for subsea installations
- NACE MR0175/ISO 15156-3
Q4: What’s the MOQ for custom electropolished coils?
Standard stock: 5 ton MOQ.
Custom specs: 10 tons MOQ (lead time 30 days).
Q5: How to verify material authenticity pre-fabrication?
Scan NFC tags with MonelVerify™ app to access:
- XRF validation against PMI certificates
- 3D EBSD microstructure maps
- Blockchain-validated EN 10204 3.2 reports
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