Differences between EN 1.1170 Steel and Nickel 600
Differences between EN 1.1170 Steel and Nickel 600
EN 1.1170 is a non-alloy carbon steel, while Nickel 600 is a nickel-chromium alloy. Their main differences lie in their material classification (ferroalloy vs. nickel alloy), chemical composition, and properties. Nickel 600 exhibits superior heat resistance and corrosion resistance at high temperatures compared to EN 1.1170.
Does Inconel 600 exhibit ferromagnetism?
Inconel 600 typically exhibits paramagnetism at room temperature; however, it displays ferromagnetism at chromium-depleted grain boundaries. This suggests that magnetic sensitization of Inconel 600 can be used for non-destructive testing.
EN 1.1170 steel is a high-carbon structural steel primarily used in applications requiring high strength, toughness, and wear resistance. Its chemical composition mainly includes carbon (0.27%~0.34%), silicon (≤0.40%), and manganese (0.70%~1.10%). This material is widely used in the automotive and machinery manufacturing industries, suitable for manufacturing small-section fasteners, frame longitudinal beams, and gearbox gears. Its heat treatment processes include quenching and tempering to optimize its mechanical properties.
Nickel 600 (Inconel 600) is a nickel-chromium-iron-based solid solution strengthened alloy, whose main components include nickel (≥72%), chromium (14-17%), and iron (6-10%). This alloy exhibits excellent resistance to high-temperature oxidation and corrosion, forming a dense oxide film at temperatures up to 1200°C, resisting corrosion from chloride ions, nitric acid, and alkaline solutions. Nickel 600 is widely used in high-temperature corrosion environments such as nuclear reactors, aerospace engine components, petrochemical equipment, and heat treatment furnaces. Its physical properties include a density of 8.43 g/cm³, a melting point of 1370-1430℃, a yield strength of 240 MPa, and a tensile strength of 550 MPa, making it suitable for manufacturing oxidation-resistant parts that withstand low loads below 1100℃.
Chemical Composition Comparison: EN 1.1170 Steel vs Nickel 600
| Element | EN 1.1170 (C35) Steel | Nickel 600 (UNS N06600) |
|---|---|---|
| Iron (Fe) | Balance (≥ 98%) | 6.0 – 10.0 % |
| Nickel (Ni) | ≤ 0.40 % | ≥ 72.0 % |
| Chromium (Cr) | ≤ 0.40 % | 14.0 – 17.0 % |
| Carbon (C) | 0.32 – 0.39 % | ≤ 0.15 % |
| Manganese (Mn) | 0.50 – 0.80 % | ≤ 1.0 % |
| Silicon (Si) | 0.15 – 0.40 % | ≤ 0.50 % |
| Sulfur (S) | ≤ 0.035 % | ≤ 0.015 % |
| Phosphorus (P) | ≤ 0.035 % | – |
| Copper (Cu) | ≤ 0.40 % | ≤ 0.50 % |
| Aluminum (Al) | – | ≤ 0.30 % (typical) |
| Titanium (Ti) | – | ≤ 0.30 % (typical) |
| Molybdenum (Mo) | ≤ 0.10 % | – |
| Vanadium (V) | – | – |
| Cobalt (Co) | – | – |
| Other Elements | – | ≤ 0.30 % |
Strength Comparison: EN 1.1170 Steel vs Nickel 600
| Property | EN 1.1170 (C35) Steel | Nickel 600 (UNS N06600) |
|---|---|---|
| Tensile Strength (Room Temp) | 490 – 640 MPa | 550 – 690 MPa |
| Yield Strength (0.2% Offset, Room Temp) | 285 – 440 MPa | 240 – 350 MPa |
| Elongation | ≥ 18 % | ≥ 30 % |
| Reduction in Area | ≈ 45 % | ≈ 45 – 55 % |
| Hardness (Annealed/Normalized) | 150 – 190 HB | 65 – 90 HRB |
| Modulus of Elasticity | 210 GPa | 207 GPa |
| Fatigue Strength (Rotating Beam) | 230 – 280 MPa | 270 – 310 MPa |
| Shear Strength | ≈ 300 – 380 MPa | ≈ 520 MPa |
| Impact Toughness (Charpy V-Notch, Room Temp) | 25 – 40 J | > 100 J |
| High-Temperature Tensile Strength (600°C) | ≈ 120 MPa | ≈ 350 MPa |
| High-Temperature Yield Strength (600°C) | ≈ 70 MPa | ≈ 180 MPa |
| Creep Rupture Strength (700°C, 1000h) | Not applicable (rapid oxidation) | ≈ 60 MPa |
| Maximum Service Temperature (Continuous) | ≈ 400 °C | ≈ 1095 °C |
| Minimum Service Temperature | ≈ -20 °C | ≈ -250 °C |
| Thermal Expansion Coefficient (20–100°C) | 11.5 μm/m·°C | 13.3 μm/m·°C |
| Thermal Conductivity (100°C) | 48 – 52 W/m·K | 14.8 W/m·K |
| Specific Heat Capacity (20°C) | 470 – 490 J/kg·K | 460 J/kg·K |
| Density | 7.85 g/cm³ | 8.47 g/cm³ |
| Poisson's Ratio | 0.29 | 0.29 |
| Work Hardening Coefficient | Moderate | High |
| Machinability (% vs. Free-Cutting Steel) | 60 – 70 % | 40 % |
| Feature | EN 1.1170 Steel | Nickel Alloy 600 |
|---|---|---|
| Material Classification | Non-alloy steel (iron-based) | Nickel alloy |
| Primary Elements | Primarily iron with carbon and manganese (28Mn6) | Nickel (72% minimum), chromium (14-17%), iron (6-10%) |
| Corrosion Resistance | Standard corrosion resistance | Excellent resistance to general corrosion and oxidation, especially at high temperatures up to 2000°F (1093°C) |
| Heat Resistance | Standard heat resistance | High-temperature strength and good heat resistance |
| Strength | Standard mechanical properties for a carbon steel | High strength and workability |
| Magnetic Properties | Typically magnetic | Nonmagnetic |
| Hardening | Hardened by cold working | Not hardenable by heat treatment; strengthened by cold working |
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