GH3030 High-Temperature Alloy Pipe (Ni-Cr-Fe Alloy) | Superior High-Temperature Stability & Oxidation Resistance

✓ Oxidation Resistance: Forms a stable Cr₂O₃ oxide layer at 1000°C (1832°F), reducing scaling by 90% vs. 310S stainless steel.

✓ Thermal Fatigue Mastery: Withstands 10,000+ thermal cycles between 20°C–950°C (68°F–1742°F) without cracking.

✓ Weldability: Low carbon content (<0.08%) minimizes carbide precipitation; compatible with ER310 filler for TIG/MIG welding.

✓ Precision Manufacturing: Seamless pipes with **±0.1mm wall thickness tolerance** and Ra ≤1.6μm internal finish for high-pressure systems.

GH3030 High-Temperature Alloy Pipe (Ni-Cr-Fe Alloy)

Engineered for aerospace, power generation, and industrial furnace applications, GH3030 high-temperature alloy pipe combines a nickel-chromium-iron matrix (Ni-76%, Cr-20%, Fe-1.5%) to deliver exceptional oxidation resistance, thermal fatigue strength, and creep resistance up to 1000°C (1832°F). Certified to GB/T 14992, AMS 5542, and ASTM B168, this alloy outperforms conventional stainless steels like 310S and 321 in cyclic high-temperature environments, offering 3x the lifespan in thermal cycling applications.

Sizes: OD 10mm–500mm × WT 1mm–30mm (seamless) / OD 500mm–1,200mm × WT 5mm–50mm (welded)
Length: 1m–12m standard (cut-to-length precision ±2mm)
Surface Finishes: Pickled, Electropolished (Ra ≤0.4μm), Sandblasted
Mechanical Properties (Room Temp): Yield Strength ≥250 MPa | Tensile Strength ≥600 MPa | Elongation ≥35% | Hardness ≤200 HBW

Parameter Category	Value/Description
Material Standard	GB/T 14992 (China), GB/T 15062 (Seamless Pipe)
Chemical Composition (%)	Ni ≥75, Cr 19–22, Fe ≤1.5, Ti 0.15–0.35, Al ≤0.15, C ≤0.08, Mn ≤0.40, Si ≤0.80, S ≤0.015, P ≤0.015
Tensile Strength (MPa)	≥685 (Annealed)
Yield Strength (MPa)	≥295 (Annealed)
Elongation (%)	≥30 (in 50mm gauge length)
High-Temperature Strength	– 800°C: Tensile Strength ≥245 MPa – 800°C: 100h Creep Rupture Strength ≥78 MPa
Hardness	Brinell (HBW): ≤200
Density (g/cm³)	8.4
Melting Range (°C)	1400–1450
Thermal Conductivity (W/m·K)	14.2 (at 20°C)
Thermal Expansion (10⁻⁶/°C)	16.5 (20–800°C)
Electrical Resistivity (Ω·m)	1.12 × 10⁻⁶ (at 20°C)
Elastic Modulus (GPa)	210
Oxidation Resistance	Excellent oxidation resistance up to 1000°C in air. Stable in continuous high-temperature service.
Corrosion Resistance	Resists carburization, sulfidation, and chlorine-containing environments at high temperatures.
Heat Treatment	Solution Treatment: 1050–1100°C followed by rapid cooling (air or water).
Surface Finishes	Seamless, Annealed, Pickled, Polished (Ra ≤0.8μm), or Cold-Drawn.
Pipe Dimensions	– Outer Diameter (OD): 10mm–500mm – Wall Thickness: 1mm–50mm – Length: 1000mm–12000mm (customizable).
Key Applications	Aerospace engine exhaust systems, industrial furnace piping, chemical processing equipment, heat exchanger tubes, and high-temperature gas transport systems.

GH3030 High-Temperature Alloy Pipe (Ni-Cr-Fe Alloy) Applications

Industry	Critical Use Cases	GH3030 Pipe Advantage
Aerospace	Jet engine exhaust ducts, afterburner liners	0.01mm oxidation depth after 500h at 1000°C (1832°F).
Power Generation	Superheater tubes, gas turbine manifolds	Resists thermal fatigue in 20°C–950°C cycles.
Industrial Furnace	Radiant tubes, annealing furnace piping	Withstands continuous operation at 950°C (1742°F).
Chemical Processing	HCl vapor transfer lines, pyrolysis reactors	Immune to HCl vapors at 800°C (1472°F).

GH3030 High-Temperature Alloy Pipe (Ni-Cr-Fe Alloy) Product Packaging

GH3030 High-Temperature Alloy Pipe (Ni-Cr-Fe Alloy) are engineered for aerospace turbines, nuclear reactors, and high-stress industrial applications (operating up to 1,300°C). To ensure dimensional accuracy and metallurgical integrity during global transit, we deploy aerospace-grade packaging systems and thermal-controlled logistics compliant with AMS 5662, NACE MR0175, and ISO 4955 standards.

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