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Introduction
NiCr20Ti Alloy trade mark is Nimonic75, and W-Nr.2.4951 is an early developed solid solution strengthened superalloy with simple chemical composition, satisfactory thermal strength and high plasticity below 800°C, and good oxidation resistance, thermal fatigue, cold stamping and welding process performance.
Chemical components Chemical element composition content（%）
Composition | C | Si | Mn | Co | S | Cr | Ti | P | Fe |
Min | 0.08 | \ | \ | \ | \ | 18.00 | 0.20 | \ | \ |
Max | 0.15 | 1.00 | 1.00 | 5.00 | 0.02 | 12.00 | 0.60 | 0.03 | 5.00 |
Mechanical properties
Rigidity | Tensile strength | Yield strength | Elongation |
≤187HB | ≥690MPa | ≥345MPa | ≥40% |
Physical properties
Density | Melting points | Resistivity | Thermal conductivity | Linear expansivity |
8.1g/cm3 | ≥1350℃ | 1.09×10-6Ω·m(20℃) | 12.6W/(m.k)(100℃) | 11.4×10-6/K(20-100℃) |
Advantages
(1)NiCr20Ti has good corrosion resistance and performs well in high temperature, oxidizing and reducing environments.
(2)NiCr20Ti can resist the erosion of general corrosive media such as nitric acid, sulfuric acid, and hydrochloric acid, but will have certain corrosion in acid and alkaline media.
Applications
(1) Aerospace : NiCr20Ti is widely used in the , such as for manufacturing turbine blades, combustion chamber parts, etc. of jet engines.
(2)Shipbuilding,NiCr20Ti is used to manufacture high temperature and corrosion resistant parts.
(3)Chemical industry, it is used to manufacture high-temperature reaction equipment and corrosion-resistant pipe fittings, etc.
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