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ohmalloy insulated heater wire

Resistance Wire in NiCr

Nichrome generally refers to any alloy of nickel, chromium, and often iron and/or other elements or substances. Nichrome alloys are typically used in resistance wire.

Nichrome wire can be used in the explosives and fireworks industry as a bridgewire in electric ignition systems, such as electric matches and model rocket igniters, Industrial and hobby hot-wire foam cutters.

Nichrome wire also is commonly used in ceramic as an internal support structure to help some elements of clay sculptures hold their shape while they are still soft. Nichrome wire is used for its ability to withstand the high temperatures that occur when clay work is fired in a kiln.

OHMALLOY’S NiCr80/20 can ensure the nickel content more than 76.5% for all wire. Any customer who request the Nickel content more than 78%, we also can make it specially for all.

OHMALLOY can provide the nichrome alloy in the form of flat wire, round wire. The grade of nichrome alloy is as follows:


Alloy material

Chemical composition %

C

P

S

Mn

Si

Cr

Ni

Al

Fe

others

Max(≤)

Ohmalloy 109(NiCr80/20)

0.08

0.02

0.015

0.6

0.75~1.60

20.0~23.0

Rest

≤0.50

≤1.0

Ohmalloy 118(NiCr70/30)

0.08

0.02

0.015

0.6

0.75~1.60

28.0~31.0

Rest

≤0.50

≤1.0

Ohmalloy 112(NiCr60/15)

0.08

0.02

0.015

0.6

0.75~1.60

15.0~17.0

55.0~61.0

≤0.50

Rest

Ohmalloy 104A (NiCr35/20 )

0.08

0.02

0.015

1

1.00~3.00

18.0~21.0

34.5~36.0

Rest

Ohmalloy 104B (NiCr35/20)

0.08

0.02

0.015

1

1.00~2.00

18.0~21.0

30.0~31.5

Rest


Round wire

0.010-12 mm
Other sizes are available on request.

Ribbon (flat wire)

Thickness: 0.023-1.0mm

Width: 0.038-6 mm

Width/thickess ratio max 40, depending on alloy and tolerance

Other sizes are available on request.

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