Monel K500 Bar – Superior Corrosion Resistance & Mechanical Strength for Marine, Petrochemical & Aerospace Applications

Description

Monel K500 bar is a precipitation-hardened nickel-copper alloy engineered to deliver exceptional corrosion resistance, high tensile strength, and durability in the most demanding industrial environments. With a composition of 63–67% nickel, 27–33% copper, and additions of aluminum (2.3–3.15%) and titanium (0.35–0.85%), this alloy combines the proven corrosion resistance of Monel 400 with enhanced mechanical properties through γ' phase (Ni₃(Al,Ti)) precipitation hardening.

Ideal for marine, oil & gas, and aerospace systems, Monel K500 bars exhibit a tensile strength of 1,100–1,300 MPa and yield strength of 800–1,000 MPa after aging treatment, outperforming conventional stainless steels in high-stress applications. Its ability to resist chloride-induced pitting, stress corrosion cracking (SCC), and sulfidation in H₂S-rich environments makes it indispensable for seawater pumps, offshore valves, and sour gas well components. With a melting range of 1,288–1,343°C and low magnetic permeability even at cryogenic temperatures (-196°C), it ensures reliability in diverse thermal and electromagnetic condition.

Technical Specifications (Table)

Applications

1. Marine Engineering: Pump shafts, propeller shafts, and seawater valves resistant to saltwater corrosion.

2. Oil & Gas: Downhole tools, valve trim, and sour gas pipeline components in H₂S environments.

3. Aerospace: Turbine blades, engine fasteners, and structural parts requiring high strength-to-weight ratios.

4. Chemical Processing: Reactors, heat exchangers, and sulfuric acid handling systems.

5. Nuclear Energy: Control rod drive mechanisms and radiation-resistant instrumentation.

Q&A

Q1: How does Monel K500 compare to Monel 400 in mechanical performance?
A: Monel K500 offers 3x higher yield strength and 2x higher tensile strength than Monel 400 due to aluminum/titanium additions and aging treatment, while retaining equivalent corrosion resistance.

Q2: Can Monel K500 bars withstand cryogenic temperatures?
A: Yes. The alloy maintains ductility and near-zero magnetic permeability even at -196°C, making it suitable for LNG storage and superconducting systems.

Q3: What heat treatment is required for optimal performance?
A: Aging at 593–607°C for 6–16 hours followed by controlled cooling maximizes γ' phase precipitation. Cold-worked bars require stress relief annealing at 620–650°C to prevent cracking.

Wuxi Nickel New Material Co., Ltd. is a high-tech enterprise integrating the production, manufacturing, and research & development of specialty alloy materials. Located in Wuxi, Jiangsu Province, the company specializes in precision alloys, titanium alloys, high-temperature alloys, corrosion-resistant alloys, heat-resistant steels, nickel-based welding wires, and other specialty materials, with an annual production capacity of 5,000 tonnes. Our product range includes plates, bars, wires, and strips, which are widely used in industrial electric furnaces, power‐station boilers, petrochemical plants, aerospace, marine engineering, machinery, and electronic instrumentation. These materials are characterized by high electrical resistance, high‐temperature strength, corrosion resistance, wear resistance, and fatigue resistance. We can manufacture in compliance with national, industry, and international standards, and are also able to tailor products to meet specific customer requirements.
The company is committed to improving and enhancing its production infrastructure all year round, with a full range of production and processing equipment including vacuum smelting, hot processing, cold processing, and heat treatment. It also has various physical and chemical analysis testing facilities such as spectrometers to ensure product quality. The company has a high-quality R&D, production, and management team that is fully capable of meeting the complex requirements of the current market for material diversification, refinement, and functionalization. Our company is particularly skilled in developing and producing "specialized materials" that are suitable for the market and specific customer needs, which will be one of our company's characteristics. The company adheres to the business philosophy of "guided by market demand, driven by technological progress, and committed to optimizing and innovating materials to create greater value for customers", serving society and the market.