Gnee Steel is a professional manufacturer of nickel-based alloys 718, Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. We specialize in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power, automotive, and nuclear energy industries, and we can provide customized alloy material solutions according to customer needs.
Haynes 230 vs Inconel 718 Alloys: What's the Difference?
Haynes 230 vs Inconel 718 Alloys: What's the Difference?
Both Haynes 230 and Inconel 718 are high-performance nickel-based superalloys, but their strengths lie in different areas: Haynes 230 offers excellent long-term thermal stability and oxidation resistance, up to 2100°F (1149°C); while Inconel 718 exhibits higher yield strength and tensile strength at lower but still relatively high temperatures (up to 1300°F or 700°C). Haynes 230 is often used in applications requiring extremely high heat resistance, while Inconel 718 is better suited for high-stress applications.
Is Inconel 718 difficult to machine?
Inconel 718 alloy is a commonly used material in the aerospace industry, possessing excellent strength and heat resistance-but these very properties make it extremely difficult to machine. Inconel 718 is prone to rapid work hardening, generating extremely high temperatures at the tool-workpiece interface, thus accelerating tool wear.
Haynes 230 Overview
Haynes 230 is a nickel-based superalloy renowned for its high-temperature strength, oxidation resistance, and durability. Its main components include nickel, chromium, tungsten, and molybdenum, with a small amount of lanthanum. This composition gives it excellent stability and performance in extreme environments, particularly at temperatures up to 2100°F (1149°C).
Inconel 718 Overview
Inconel 718 is another important nickel-chromium superalloy, notably characterized by its high content of iron, niobium, and molybdenum. It also contains small amounts of titanium and aluminum, which enhance its mechanical properties as well as its oxidation and corrosion resistance. Inconel 718 is widely used in applications requiring high strength and durability at high temperatures, although its operating temperature is slightly lower than that of Haynes 230.
Haynes 230 vs Inconel 718 Alloys
Comparison of the chemical composition of Haynes 230 and Inconel 718 Alloys
| Element | Haynes 230 (Approximate Percentage) | Inconel 718 (Approximate Percentage) |
|---|---|---|
| Nickel (Ni) | 58-60% | 50-55% |
| Chromium (Cr) | 20-22% | 18-21% |
| Tungsten (W) | 14-16% | Trace amounts |
| Molybdenum (Mo) | 1-2% | 2.8-3.3% |
| Iron (Fe) | Minor amounts | 18-20% |
| Niobium (Nb) | Trace amounts | 4.75-5.5% |
| Lanthanum (La) | Present | Not specified |
| Titanium (Ti) | Not specified | 0.65-1.15% |
| Aluminum (Al) | Not specified | 0.20-0.80% |
Mechanical Properties Comparison of Haynes 230 and Inconel 718
| Property | Haynes 230 | Inconel 718 |
|---|---|---|
| Density | 8.97 g/cm³ | 8.19 g/cm³ |
| Melting Range | 1323-1371 °C | 1260-1336 °C |
| Tensile Strength (RT) | 785 MPa (min) | 1240 MPa (min) |
| Yield Strength (0.2% offset, RT) | 310 MPa (min) | 1035 MPa (min) |
| Elongation (RT) | 40% (min) | 12% (min) |
| Hardness (RT, typical) | 90 HRB | 36 HRC |
High-Temperature Performance of Haynes 230 and Inconel 718
One of the key factors in evaluating high-temperature performance is a material's ability to maintain strength at high temperatures.
Haynes 230
Haynes 230 has a high melting point of approximately 2200°C, thus performing excellently in extreme high-temperature environments. Due to its high chromium and tungsten content, this alloy maintains good oxidation resistance at temperatures up to 2100°F (1150°C), making it ideal for industrial furnaces, gas turbines, and other high-temperature environments requiring extremely high long-term stability.
Inconel 718
Inconel 718 has a lower melting point of approximately 1300°C, but maintains good performance at moderately high temperatures (typically up to 1800°F (982°C)). It is particularly suitable for applications where temperatures do not exceed this range. This alloy also performs exceptionally well at lower temperatures (below 500°F or 260°C), providing excellent strength and oxidation resistance for applications requiring continuous exposure to moderately high temperatures.
Comparison of Oxidation Resistance of Haynes 230 and Inconel 718
Oxidation resistance determines a material's ability to resist corrosive environments at high temperatures.
Haynes 230
Haynes 230 exhibits excellent oxidation resistance in highly oxidizing environments, such as industrial furnaces and exhaust systems. The stable oxide layer that forms on the surface of Haynes 230 protects the underlying metal from further oxidation. This property is particularly advantageous for applications requiring long-term exposure to high temperatures and oxidizing atmospheres.
Inconel 718
Inconel 718 also possesses excellent oxidation resistance, but it is more suitable for environments containing corrosive chemicals such as chloride ions, sulfuric acid, and nitric acid. The high chromium and nickel content of Inconel 718 makes it a preferred material for chemical processing and marine industries, where both high strength and resistance to strong chemical corrosion are required.
Comparison of Haynes 230 and Inconel 718 performance:
Creep resistance: Haynes 230 typically exhibits excellent long-term creep rupture strength at temperatures above 1200°F (649°C).
Weldability: Both have good weldability, but Haynes 230 is renowned for its outstanding long-term structural stability after high-temperature exposure.
Applications of Haynes 230 and Inconel 718
Haynes 230: Gas turbine components, combustion chambers, nitriding fixtures, and high-temperature furnaces.
Inconel 718: Aerospace engine components, gas turbines, rocket engines, and nuclear reactors.
Gnee Steel also supplies custom Inconel 718 products in various sizes and specifications. Please send us your drawings for a quote!
Gnee Steel is a professional manufacturer of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. We specialize in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power, automotive, and nuclear energy industries, and we can provide customized alloy material solutions according to customer needs. For alloy material price inquiries or to request customized alloy material solutions, please feel free to contact us at ru@gneesteelgroup.com for a quote.