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Introduction
GH1140(GH140) is a solid solution strengthened iron-nickel-based superalloy, in addition to a large number of chromium, and with a small amount of tungsten, molybdenum, aluminum and titanium and other elements to strengthen the solid solution.GH1140has moderate heat strength, high plasticity, good thermal fatigue, organizational stability, and welding process performance. Suitable for the manufacture of work temperature 850℃ below the aero engine and gas turbine combustion chamber of the plate structure and other high-temperature components.
Specification:ASTM B622/B167/B163/B444
Chemical components(%)
Composition | C | Si | Mn | P | S | Cr | Ni | Mo | Al | Ti | Ce | W |
Min | 0.06 | \ | \ | \ | \ | 20.00 | 35.00 | 2.00 | 0.20 | 0.70 | \ | 1.40 |
Max | 0.12 | 0.80 | 0.70 | 0.025 | 0.015 | 23.00 | 40.00 | 2.50 | 0.60 | 1.20 | 0.05 | 1.80 |
Mechanical properties
Rigidity | Tensile strength | Yield strength | Elongation |
36-55HRC | ≥900MPa | ≥550MPa | ≥20% |
Physical properties
Density | Melting points | Specific heat | Magnetism | Resistivity | Thermal conductivity | Linear expansivity |
8.09g/cm3 | 1360-1430℃ | 400J/(Kg.℃） | \ | 1.07×10-6Ω·m (20℃) | 14.0W/(m.k)(100℃) | 13.5×10-6/K (20-1000℃) |
Specification:
Product type | Products | Dimension | Processes | Deliver Status |
Plates / Sheets | Plates / Sheets | 0.08-200mm(T)*W*L | Forging, hot rolling and cold rolling | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
Steel Bar | Round Bar, Flat Bar, Square Bar | Φ8-1200mm*L | Forging, hot rolling and cold rolling, Cast | Black, Rough Turning, Shot Blasting, |
Coil / Strip | Steel Coil /Steel Strip | 0.03-16.0x1200mm | Cold-Rolled & Hot-Rolled | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
Pipes / Tubes | Seamless Pipes/Tubes, Welded Pipes/Tubes | OD:6-219mm x WT:0.5-20.0mm | Hot extrusion, Cold Drawn, Welded | Annealed, Solution and Aging, Q+T, ACID-WASHED |
Advantages
(1)High temperature resistance:It can work stably for a long time in high temperature environments above 800°C, and has good high temperature strength and resistance to high temperature oxidation erosion.
(2)Corrosion resistance:GH140 can resist corrosion from various strong acids, strong alkali and salt solutions.
(3)Good processability:GH1140 is easy to hot process, cold process and weld, and can meet the manufacturing requirements of complex parts.
Applications
(1)Aviation field,GH140 can be used to manufacture high-temperature components such as engine combustion chambers and afterburners, as well as key load-bearing components such as turbine blades and turbine disks.
(2)Aerospace field,GH1140 alloy can be used to manufacture key components such as rocket engine nozzles and combustion chambers, which can withstand extreme environments such as high temperature and high stress.
(3)Petrochemical industry, this alloy can be used to manufacture high-temperature reactors, heat exchangers, pipelines and other equipment, and can withstand harsh conditions such as high temperature and strong corrosion.
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