Material: Monel® Fasteners – Marine Grade Alloy for Corrosive Challenges
Overview:
Monel® is a premium nickel-copper alloy renowned for its exceptional resistance to seawater, steam, and chemical environments, particularly in acidic and alkaline conditions. Designed for superior durability and anti-corrosive performance, Monel fasteners are ideal for industries that operate in highly corrosive marine and chemical processing environments.
At SM Fasteners, we offer a wide range of Monel bolts, nuts, washers, and studs that meet international standards and serve critical industries where stainless steel is insufficient.
Why Choose Monel Fasteners?
Monel combines toughness, ductility, and outstanding corrosion resistance to ensure dependable fastening even in extreme chemical and oceanic conditions.
✅ Superior resistance to saltwater and brine
✅ Withstands hydrofluoric, sulfuric, and hydrochloric acids
✅ Maintains strength at sub-zero and elevated temperatures
✅ Spark-resistant and non-magnetic
✅ Excellent mechanical properties even under stress
Grades We Offer
Monel 400 (UNS N04400):
High strength and corrosion resistance in a wide range of mediaMonel K500 (UNS N05500):
Age-hardened version offering greater strength, hardness, and resistance to stress corrosion cracking
Chemical Composition (Monel 400)
| Element | % Composition |
|---|---|
| Nickel (Ni) | ≥ 63.0 |
| Copper (Cu) | 28.0 – 34.0 |
| Iron (Fe) | ≤ 2.5 |
| Manganese (Mn) | ≤ 2.0 |
| Carbon (C) | ≤ 0.30 |
| Silicon (Si) | ≤ 0.50 |
| Sulfur (S) | ≤ 0.024 |
Mechanical Properties (Monel 400 – Annealed)
| Property | Value |
|---|---|
| Tensile Strength | ≥ 550 MPa |
| Yield Strength (0.2%) | ≥ 170 MPa |
| Elongation | ≥ 35% |
| Hardness (Brinell) | ~ 150 HB |
| Operating Temperature | Up to 480°C |
Applications of Monel Fasteners
Monel is a preferred choice for engineers and designers in environments where long-term performance against corrosive agents is critical:
Marine Engineering: Shipbuilding, propeller shafts, seawater piping
Oil & Gas: Refinery components, sour gas services
Chemical Processing: Valves, heat exchangers, tanks
Power Generation: Turbine blades, fuel tanks
Desalination Plants: Pumps, brine heaters
Aerospace & Defense: Fuel and hydraulic lines
Types of Monel Fasteners Available
Hex Bolts
Heavy Hex Nuts
Stud Bolts (Full Threaded, Double Ended)
Socket Cap Screws
U-Bolts, L-Bolts
Flat and Spring Washers
Customized Fasteners per drawing/specification
Packaging & Delivery
At SM Fasteners, we ensure Monel fasteners are packaged and shipped to prevent contamination and preserve their alloy integrity:
Rust-proof VCI polybags
Bubble-wrapped and foam-lined HDPE or plywood boxes
Labeling with heat number, grade, and quantity
Custom export packaging available
Documentation & Certifications
All Monel fasteners are delivered with complete quality assurance:
Mill Test Certificate – EN 10204 3.1 / 3.2
Third-Party Inspection (TPI) Reports
PMI & Chemical Composition Reports
Mechanical Testing Results
Compliance with ASTM, ASME, DIN, ISO Standards
Request a Quotation or Technical Assistance
For customized fasteners or urgent delivery, get in touch with our team:
📧 Email: susheel@smfastners.com
📱 Phone: +91 8968469570
💬 WhatsApp Chat
🧷 SM Fasteners – Your Dependable Monel Fastener Partner
From shipyards to refineries, we supply performance you can trust — with zero compromise on strength, safety, or corrosion resistance.