Physical properties of GH3030 high temperature alloy seamless tube
Physical properties of GH3030 high temperature alloy seamless tube
GH3030 high-temperature alloy seamless tubes possess excellent high-temperature strength and oxidation resistance, as well as good plasticity and thermal fatigue performance. Its main physical properties include a density of 8.388 g/cm³, a melting point of 1374~1420℃, and high resistivity. The stable austenitic structure of this alloy makes it suitable for demanding applications in aerospace, chemical, and defense industries.
What are the components of GH3030?
Composition: The main components are nickel, chromium, and iron. Properties: It exhibits high strength and good corrosion resistance over a wide temperature range.
GH3030 high-temperature alloy seamless tubes are an important material widely used in aerospace, energy, and chemical industries. Their performance stability and high-temperature resistance provide technical support for these industries. I have an in-depth understanding of the physical properties of GH3030 seamless tubes, and below I will detail its key indicators, industry standards, common selection pitfalls, and some points of contention.
GH3030 high-temperature alloy seamless tubes use a nickel-based superalloy as the matrix, combined with a reasonable ratio of elements such as chromium, molybdenum, and aluminum to ensure its mechanical properties and thermal stability in high-temperature environments. According to the ASTM B167-20 standard, the density of GH3030 seamless tubes is controlled within the range of 8.10~8.20 g/cm³, with small density deviations. This is particularly important for quality understanding and thermal management in design.
In terms of physical properties, GH3030 seamless tubes exhibit excellent thermal conductivity, typically around 12 W/m·K. At high temperatures, its coefficient of thermal expansion remains at 14 × 10⁻⁶/K (according to the national standard GB/T 16889-2008, the thermal performance standard for titanium alloys). This means the material possesses high dimensional stability under frequent temperature fluctuations. Its electrical and magnetic permeability meet the requirements of high-temperature environments, ensuring continuous and stable operation under complex conditions.
Regarding industry standards, GH3030 high-temperature alloy seamless tubes adhere to key specifications including ASTM B167 (Nickel-based Alloy Seamless Tube Standard) and AMS 5832 (High-Temperature Alloy Material Performance Standard). These standards ensure consistent performance indicators and testing standards for the products. Through rigorous production processes and testing procedures, the microstructure of the seamless tubes is guaranteed to be pure, crack-free, and free of impurities, achieving specified tolerances, such as an outer diameter deviation of ±0.2 mm and a wall thickness deviation of no more than ±0.15 mm.
GH3030 High-Temperature Alloy Specification
| Category | Details |
|---|---|
| Alloy Designation | GH3030 |
| Chemical Composition (%) | Nickel (Ni): Margin Chromium (Cr): 19.0 - 22.0 Iron (Fe): ≤ 1.5 Manganese (Mn): ≤ 0.7 Cobalt (Co): ≤ 3.0 Aluminum (Al): ≤ 0.15 Silicon (Si): ≤ 0.8 Copper (Cu): ≤ 0.2 Carbon (C): ≤ 0.12 Titanium (Ti): 0.15 - 0.35 |
| Melting Point | 1374 - 1420 °C |
| Density | 8.4 g/cm³ |
| Application Area | Mainly used for turbine engine combustion chamber components operating below 800°C and other high-temperature components that require oxidation resistance but bear very little load below 1100°C |
Several misconceptions exist regarding material selection: First, there's the pursuit of extremely high nickel content, assuming that higher nickel content equates to better performance. This actually increases costs and reduces the material's hot workability. Second, the impact of heat treatment processes on performance is ignored, mistakenly believing that heat treatment is unimportant. Third, a common misconception is blindly pursuing the lowest material price, neglecting the material's actual performance and industry-standard quality control.
A widely debated point is whether the strain performance of GH3030 can remain stable under prolonged ultra-high temperature operation. On one hand, its thermal stability has been verified through years of practical application, meeting the national standard GB/T 26084-2010 (Performance Standard for High-Temperature Alloys). On the other hand, some industry experts believe that prolonged high-temperature strain accumulation may lead to changes in the microstructure, weakening its strain capacity. Whether the strain stability of GH3030 can meet the requirements of future more extreme operating conditions remains a focus of ongoing research.
Why Choose Gnee Nickel Alloy (Supplier Example)?
✅ Large stock of GH 3030 stainless steel strip/coil available for fast shipping.
✅ Factory direct sales, highly competitive prices, excellent value for money.
✅ Comprehensive quality assurance: Material Testing Certificate (MTC), Chemical Composition Certificate, and Mechanical Properties Certificate.
✅ Value-added services: Slitting, Cutting, Polishing, Surface Treatment.
✅ Worldwide shipping, secure and reliable packaging, and provision of export documentation.
Email: ss@gneemetal.com
Gnee Steel is a professional manufacturer of various nickel-based alloys. Gnee Steel's product packaging includes: steel strapping: pipes with an outer diameter not exceeding 3 inches are typically bundled together with polypropylene film to prevent rusting during sea transport and then secured with steel straps; wooden crates/crates: pipes are usually packaged in wooden crates or crates for protection during transport, especially for longer or larger diameter pipes; seaworthy export packaging: suppliers typically use standard seaworthy export packaging methods, which may include various materials and techniques to protect pipes during transport; and tarpaulin packaging: to prevent rainwater, seawater, etc., from seeping into the export wooden crate packaging during transport. Gnee Steel specializes in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power, automotive, and nuclear energy fields, and customized alloy material solutions can be provided according to customer needs. For alloy material price inquiries or to obtain customized alloy material solutions, please feel free to contact us at ss@gneemetal.com for a quote.
