Learn about GH3030 high-temperature alloy round bars for engines
GH3030 bar is a nickel-chromium-based superalloy bar commonly used in engine components such as combustion chambers and turbine blades. It exhibits high thermal strength, oxidation resistance, and good mechanical properties below 800°C. Its main properties include high-temperature strength, oxidation resistance, thermal fatigue resistance, and good weldability, making it suitable for applications requiring extremely high high-temperature durability.
Are stainless steel high-temperature alloys?
Austenitic stainless steel (e.g., 304 and 316): Can operate at temperatures up to approximately 870°C (1600°F), suitable for high-temperature applications. Ferritic stainless steel (e.g., 430): Typically operates below 815°C (1500°F). Martensitic stainless steel (e.g., 410): Maximum operating temperature is approximately 600°C (1112°F).
1. Overview
GH3030 bars are NCr-based solid solution strengthened wrought superalloys, used at temperatures below 800℃. The alloy possesses good high-temperature strength and high plasticity, as well as resistance to thermal fatigue and oxidation, and exhibits good cold stamping and welding properties. After solidification treatment, the alloy is a single-phase austenitic structure with stable microstructure during use. It is mainly used for turbine engine combustion chamber components operating below 800℃, and for high-temperature parts requiring oxidation resistance but bearing low loads below 1100℃. Main products include cold-rolled sheets, bars, rings, wires, and tubes.
2. Application Overview and Characteristics
GH3030 alloy bars have been used to manufacture components such as aero-engine combustion chambers, afterburners, and casing mounting edges. The alloy has excellent weldability and can be subjected to argon arc welding, spot welding, seam welding, or brazing. If the solidification temperature is too low during production, residual carbides may remain, forming old grain boundaries.
GH3030 High Temperature Nickel Alloy Bar Chemical Compositions
| C | Cr | Ni | Ti | Al | Fe | Mn | Si | P | S | Cu |
| ≤0.12 | 19.0-22.0 | Bal. | 0.15-0.35 | ≤0.15 | ≤1.5 | ≤0.7 | ≤0.8 | ≤0.02 | ≤0.02 | ≤0.20 |
GH30 High Temperature Bar Mechanical Properties
| Element | Yield Strength (0.2%Offset) | Melting Point | Density | Tensile Strength | Elongation |
| GH3030 | MPa – | 1420 °C | 8.4 g/cm3 | MPa – 785 | Min 35 % |
GH3030 Alloy Mechanical Properties According to Various Standards
| Standard Number | Product Form | Heat Treatment | 20°C Tensile Strength (σb, MPa) | 20°C Elongation (δ5, %) | 700°C Tensile Strength (σb, MPa) | 700°C Elongation (δ5, %) |
|---|---|---|---|---|---|---|
| GB/T 14995, GB/T 14996 GJB 1952A, GJB 3317A |
Hot Rolled Sheet, Cold Rolled Sheet | (980~1020)°C / AC | 685 | 30 | 295 | 30 |
| GJB 3318 | Cold Rolled Strip | (980~1020)°C / AC | 685 | 30 | - | - |
| GJB 3165A | Hot Rolled & Forged Bar | - | - | - | - | - |
| GJB 2611, GB/T 14994 | Cold Drawn Bar | (980~1020)°C / WQ or AC | 685 | 30 | - | - |
| GJB 3167A | Cold Drawn Wire | (980~1020)°C / WQ or AC | ≤ 785 | 30 | - | - |
| GJB 2297A | Cold Drawn Tube | (980~1020)°C / WQ | 635 | 35 | 295 | 30 |
| GB/T 15062 | Tubing | (980~1020)°C / WQ | 590 | 35 | - | - |
| GJB 3020A | Ring Blank | (980~1020)°C / AC | 635 | 30 | - | 30 |
GH30 High Temperature Bar Application Areas
Aerospace: High-temperature components for jet engines, such as combustion chambers and turbine blades.
Energy: Components for nuclear and petrochemical equipment, such as reactors, heat exchangers, and furnace tubes.
Chemical Industry: Corrosion-resistant equipment and high-temperature reactors.
Electronics Industry: High-temperature resistors and thermocouples.
Why Choose Gnee Nickel Alloys (Supplier Example)?
✅ Large stock of GH 3030 stainless steel strip/coil/bar, fast shipping.
✅ Factory direct sales, highly competitive prices, excellent value for money.
✅ Comprehensive quality assurance: Material Testing Certificate (MTC), chemical composition certificate, and mechanical property certificate.
✅ Value-added services: slitting, cutting, polishing, surface treatment.
✅ Worldwide shipping, secure and reliable packaging, and provision of export-required documents.
Email: ss@gneemetal.com
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 ss@gneemetal.com for a quote.
