体彩20选5开奖结果走势图: NHY Metals Co., Ltd.

Electrical resistance alloys are widely applied in electrical heaters, particularly NiCr. Nichrome is nickel and chromium alloy which is commonly used in production of resistance wire because of its high resistivity and stable anti-oxidation properties at temperatures up to 1250°C that’s why resistance wires are well-suited for service in extreme environments where they are subjected to pressure and heat. Our strength is making wires, strips, ribbon and foil, including NiCr alloys and Fe-Cr-Al alloys.

Main Grades

NiCr 80 20 (UNS N06003 / 2.4869) – industrial furnaces (upto 1200°C), electric cooking equipment, precision resistors.

NiCr 70 30 (UNS N06008 / 2.4658) – industrial furnaces (upto 1250°C) with alternating oxidizing/reducing atmosphere, precision resistors.

NiCr 60 15 (UNS N06004 / 2.4767) – industrial furnaces (upto 1150°C), electrically heated equipment, high-resistance and potentiometer resistors.

NiCr 30 20 (1.4860) – industrial furnaces (upto 1050°C), electrically heated equipment, high-resistance and potentiometer resistors. Product forms

Product Size, mm Condition of supply
wire 0.1 – 12.0 bright annealed, oxidized
bar 5.0 – 60.0 hot finished, cold finished, peeled, bright turned, bright annealed
strip Thickness 2.5 – 5.0 Width 20 – 100 cold finished, bright annealed
stranded wire 2.5 – 3.0 hard, annealed

 

Chemical composition

Alloy C, max Mn, max Si Cr Cu Fe, max Ni, min
NiCr 80 20 0.15 1.0 0.5-2.0 19.0-21.0 0.50 1.0 76.0
NiCr 70 30 0.10 1.00 0.5-2.0 29.0-32.0 0.5 5.0 60.0
NiCr 60 15 0.15 2.0 0.5-2.0 14.0-19.0 0.5 19.0-25.0 59.0
NiCr 30 20 0.1 1 1.8-3.0 18.0-22.0 0.5 balance 28

 

Physical properties

Alloy Specific Resistant (Electrical Resistivity), (μΩ-mm) Density (g/cm3) Linear Expansion Coeff. Bet RT & 1000C (10-6/K) Maximum Operating Temperature of Element (°C)(in air)
NiCr 80 20 1.09 8.4 17 1200
NiCr 70 30 1.18 8.2 17 1250
NiCr 60 15 1.12 8.2 17 1100
NiCr 30 20 1.04 7.9 17 1050

 

Mechanical properties

Alloy Tensile Strength Min - Max (MPa) Elongation, % (L0=100mm)
NiCr 80 20 700-900 25-35
NiCr 70 30 750-950 25-35
NiCr 60 15 700-850 25-35
NiCr 30 20 650-800 25-35

 

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