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| UNS Number | N06601 |
|---|---|
| ASTM/ASME Standard | ASTM B564 / ASME SB564 |
| Tensile Strength | ≥ 550 MPa |
| Yield Strength | ≥ 205 MPa |
| Density | 8.11 g/cm³ |
| Max Service Temperature | 1150°C |
| Element | Composition (%) |
|---|---|
| Ni | 58.0–63.0 |
| Cr | 21.0–25.0 |
| Fe | bal |
| Al | 1.0–1.7 |
| C | ≤0.10 |
| Mn | ≤1.0 |
| Si | ≤0.50 |
Inconel 601 fasteners derive their exceptional performance from a nickel-chromium-aluminum composition, typically containing 58-63% nickel, 21-25% chromium, and 1-1.7% aluminum. The high nickel content provides a stable austenitic matrix with excellent toughness, while chromium forms a protective oxide layer that resists oxidation and corrosion. Aluminum additions create a tenacious, self-healing aluminum oxide scale that enhances high-temperature stability beyond what chromium alone can achieve. Controlled amounts of iron and trace elements like carbon and manganese further refine strength and weldability characteristics.
These fasteners deliver outstanding resistance to oxidation, carburization, and thermal cycling in extreme environments up to 1150°C. Their excellent resistance to aqueous corrosion, combined with high mechanical strength retention at elevated temperatures, makes them ideal for demanding fastening applications. The alloy maintains dimensional stability and resists creep under sustained thermal and mechanical loading, ensuring reliable joint integrity in furnace components, heat treatment equipment, and petrochemical processing systems where conventional stainless steel fasteners would fail prematurely.
Specifications
Inconel 601 Fasteners offer reliable high-temperature performance, with specifications governed by their mechanical properties, dimensional tolerances, and technical data suited to demanding service environments. Their strength, corrosion resistance, and size options are selected to meet applicable fastener requirements for industrial applications.
| Property | Value |
|---|---|
| Tensile Strength | 550-750 MPa |
| Yield Strength (0.2%) | 205-310 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 85 HRB |
| Modulus of Elasticity | 207 GPa |
| Thermal Expansion (20-100°C) | 13.9 µm/m·°C |
| Thermal Conductivity | 11.2 W/m·K |
| Density | 8.11 g/cm³ |
| Melting Range | 1332-1357°C |
| Max Service Temperature | 1150°C |
| Standard/Parameter | Details |
|---|---|
| Bolt Standard | ASME B18.2.1, DIN 931/933 |
| Stud Bolt Standard | ASME B16.5, MSS SP-75 |
| Nut Standard | ASME B18.2.2, DIN 934 |
| Washer Standard | ASME B18.22.1, DIN 125 |
| Thread Form | UNC, UNF, Metric Coarse/Fine |
| Diameter Range | M6 to M100 (1/4" to 4") |
| Length Range | 10mm to 500mm (custom available) |
| Product Forms | Hex Bolts, Studs, Nuts, Washers, Socket Screws |
| Manufacturing Standards | ASTM B564, AMS 5715 |
| Inspection Standards | NACE MR0175, PMI Testing |
Applications
