NiCr Alloy

Cr30Ni70 is a nickel-chromium alloy recognized for its excellent oxidation resistance, high thermal strength, and stable performance under high-temperature conditions. With a low positive temperature coefficient, it maintains superior plasticity, cold stamping properties, and welding performance at room temperature. After undergoing solution treatment, the alloy forms a stable single-phase austenitic structure, ensuring consistent operation throughout its service life.

• Wire 0.05-7.5
• Rod 8-50
• Flat Wire (0.05-0.35)*(0.5-6.0)
• Strip/Foil (0.5-2.5)*(5-40)

• Nickel (Ni): Rest
• Chromium (Cr): 28.0-31.0
• Iron (Fe): ≤1.0

• Grade: Cr30Ni70
• Max. Service Temperature (°C): 1250
• Melting Point (°C): 1380
• Density (g/cm³): 8.1
• Resistivity at 20℃ (μΩ•m): 1.18±0.05
• Elongation at Rupture (%): ≥20
• Specific Heat (J/g.℃): 0.461
• Thermal Conductivity (KJ/m.h.ºC): 45.2
• Coefficient of Lines Expansion (α×10⁻⁶/20~1000ºC): 17
• Micrographic Structure: Austenite
• Magnetic Properties: Non-magnetic