Type A Wire (Kanthal Nikothal 80 or Equivalent)

Composition: 80% Nickel, 20% Chromium
Specific Resistance: 655 Ohms / circ. mil foot @ 68°F / 20°C
Maximum continuous operating temperature: 2190°F / 1200°C (element temperature in air)
Melting Point: 1400°C / 2550°F
Density: (lbs/in3): 0.300
Specific Gravity: 8.41
Resistance Tolerance: 8 ga. through 23 ga. ±3%, 24 ga. through 36 ga. ±5%, 37 ga. through 43 ga. ±8%

Type C Wire (Kanthal Nikrothal 60 or Equivalent)

Composition: 60% Nickel, 16% Chromium, Fe balance
Specific Resistance: 668 Ohms / circ. mil foot @ 68°F / 20°C
Maximum continuous operating temperature: 2100°F / 1150°C (element temperature in air)
Melting Point: 1390°C / 2535°F
Density: (lbs/in3): 0.296
Specific Gravity: 8.25
Resistance Tolerance: 16 ga. through 23 ga. ±3%, 24 ga. through 36 ga. ±5%, 37 ga. through 44 ga. ±8%

Type C Ribbon (Kanthal Nikrothal 60 or Equivalent)

Composition: 60% Nickel, 16% Chromium, Fe balance
Specific Resistance: 524 Ohms / circ. mil foot @ 68°F / 20°C
Maximum continuous operating temperature: 2100°F / 1150°C (element temperature in air)
Melting Point: 1390°C / 2535°F
Density: (lbs/in3): 0.296
Specific Gravity: 8.25
Resistance Tolerance: ±5%

Type D Wire (Kanthal Wire or Equivalent)

Composition: 22% Chromium, 4.8% Aluminum, Fe balance
Specific Resistance: 812 Ohms / circ. mil foot @ 68°F / 20°C
Maximum continuous operating temperature: 2370°F / 1300°C (element temperature in air)
Melting Point: 1500°C / 2730°F
Density: (lbs/in3): 0.262
Resistance Tolerance: 17 ga. through 23 ga. ±3%, 24 ga. through 36 ga. ±5%, 37 ga. ±8%