| Material Symbol  | 
                Sheath Material  | 
                Melting Point(°F)  | 
                Max Temp; In Air(°F)  | 
                Atmosphere* | 
|---|---|---|---|---|
| H | 304 SS | 2550 | 1650 | ORNV | 
| J | 310 SS | 2550 | 2100 | ORNV | 
| L | 316L SS | 2550 | 1650 | ORNV | 
| O | 446 SS | 2700 | 2100 | ORNV | 
| M | Inconel 600 | 2500 | 2100 | ONV | 
| P | Inconel 702 | 2620 | 1500 | ONV | 
| Q | Platinum | 3216 | 3000 | ON | 
| R | Molybdenum | 4750 | 1000 | VNR | 
| T | Titanium | 3300 | 600 | V | 
| V | STABALOY | 2552 | 2220 | ORNV | 
*KEY
O=Oxidizing, R=Reducing, N=Neutral, V=Vacuum
| Suggested Upper Limit for Outside Diameter (Single Element) °C (°F) | ||||||
|---|---|---|---|---|---|---|
| Sheath | Thermocouple Type | |||||
| In | mm | T | J | E | K | N | 
| 1/25" | 1.0 | 260° (500°) | 260° (500°) | 300° (570°) | 700° (1290°) | 2700° (1290°) | 
| 1/16" | 1.6 | 260° (500°) | 440° (825°) | 510° (950°) | 920° (1690°) | 920° (1690°) | 
| 1/8" | 3.2 | 315° (600°) | 520° (970°) | 650° (1200°) | 1070° (1950°) | 1070° (1950°) | 
| 3/16" | 4.8 | 370° (700°) | 620° (1150°) | 730° (1350°) | 1150° (2100°) | 1150° (2100°) | 
| 1/4" | 6.3 | 370° (700°) | 720° (1330°) | 820° (1510°) | 1150° (2100°) | 1150° (2100°) | 
| 3/8" | 9.5 | 370° (700°) | 720° (1330°) | 820° (1510°) | 1150° (2100°) | 1150° (2100°) |