Heater Ribbon
Resistance Ribbon Type - A | Resistance Ribbon Type - C
Heater Ribbon
Nichrome Ribbon Types
The Arklay S. Richards Co., Inc. offers two types of resistance heating ribbon. The Richards NRA or Type A resistance heating ribbon is composed of 80% Nickel and 20% Chromium. The Type A has a lower temperature coefficient of resistance when compared to the Type C resistance ribbon. The Type A resistance ribbon has a usable temperature range up to 1150°C or 2100°F.
Composition
Richards NRC or Type C resistance heating ribbon is composed of 60% Nickel, 16% Chromium, and the balance of 24% Iron. Type C ribbon has a usable temperature range up to 1000°C or 1850°F. It also has a higher coefficient of resistance when compared to the Type A. Both types of ribbon have excellent corrosion resistance.
Applications
The Type C ribbon is very useful in applications where a high resistance is required within a limited space. In heating and technical applications, the Type A ribbon is most commonly used. The Type A and Type C resistance ribbon are both offered in large or small spool sizes.
Specifications
- Type A and Type C Alloys
- High Electrical Resistance
- Excellent Corrosion Resistance
- Available in thicknesses from .002" to .102"
- Available in widths from 1/64" to 1.0"
Resistance Table for Type A Ribbon
Nichrome A Ribbon Part Number Example: Part number is NRA then Code 1 then Code 2 NRA0424 has Code 1 as number 04 (thickness of .072") and code 2 has number 24 or (width of 3/8")
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Resistance Table for Type C Ribbon
Nichrome C Ribbon Part Number Example: Part number is NRA then Code 1 then Code 2 NRC0424 has Code 1 as number 04 (thickness of .072") and code 2 has number 24 or (width of 3/8")
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Accessories and Related Products
Resistance Heater Ribbon Specifications
| Heater Ribbon Type | Resistivity Ohms/Sq Mil Foot | Density |
| Type A | 510 Ohms/Square mil foot at 68°F | .3039 Lbs/Ci |
| Type C | 530 Ohms/Square mil foot at 68°F | .2979 Lbs/Ci |