OHMALLOY have 20 years in producing the thermocouple alloy wire. In order to ensure the quality of our thermocouple wire, we have the product undergo smelting in a vacuum furnace, argon & hydrogen annealing and continuous wire drawing, among other processes.
For the diameter large than 1.2mm, we usually provide the Oxidized status wire. And for the diameter less than 1.2mm, we can offer bright wire packed on spool such as DIN80, 125, 160, 200.
Before sending out, we test each batch of thermocouple bare wire and will issue the report for each spool or coil of wire.
OHMALLOY’s type K wire has long time stability at high temperature such as 1000 Degree C and the quality was accepted by many customers who is in area space industry, nuclear power industry.
OHMALLOY can also supply the thermocouple alloy wire in cheap cost for making extension cable. OHMALLOY have a lot of advantage in reducing the cost while ensuring the quality of the extension alloy wire as we had large quantity order for that.
Thermocouple type and alloy material:
Name and code of alloy wires | Diameter of wires (mm) | Maximum temperature ℃ | |||||
Positive | Negative | ||||||
Name | Code | Name | Code | Long-time | Short-time | ||
NiCr10 (Chromel) | KP | NiSi3 /(Alumel) (China standard) | KN | Φ0.3 | 700 | 800 | |
Φ0.5 | 800 | 900 | |||||
Φ0.8 Φ1.0 | 900 | 1000 | |||||
NiAl/(Alumel) (IEC standard) | KN | ||||||
Φ1.2 Φ1.6 | 1000 | 1100 | |||||
Φ2.0 Φ2.5 | 1100 | 1200 | |||||
NiCr14.2Si | NP | NiSi4 | NN | Φ3.2 | 1200 | 1300 | |
NiCr10 (Chromel) | EP | CuNi45 (Constantan) | EN | Φ0.3 Φ0.5 | 350 | 450 | |
Φ0.8 Φ1.0 Φ1.2 | 450 | 550 | |||||
Φ1.6 Φ2.0 | 550 | 650 | |||||
Φ2.5 | 650 | 750 | |||||
Φ3.2 | 750 | 900 | |||||
Fe | JP | CuNi45 (Constantan) | JN | Φ0.3 Φ0.5 | 300 | 400 | |
Φ0.8 Φ1.0 Φ1.2 | 400 | 500 | |||||
Φ1.6 Φ2.0 | 500 | 600 | |||||
Φ2.5 Φ3.2 | 600 | 750 | |||||
Cu | TP | CuNi45 (Constantan) | TN | Φ0.2 Φ0.3 | 150 | 200 | |
Φ0.5 Φ0.8 | 200 | 250 | |||||
Φ1.0 Φ1.2 | 250 | 300 | |||||
Φ1.6 Φ2.0 | 300 | 350 |
Thermocouple wire electromotive force (EMF) Tolerance:
Thermocouple Type | Grade | Temperature range ℃ | Electromotive force (EMF) Tolerance | |
IEC (EN)60584 | ASTM E230 | |||
Type K & Type N | Ⅰ | -40~1100 | ±1.5℃ or ±0.4%t | ±1.1℃ or ±0.4% |
Ⅱ | -40~1300 | ±2.5℃ or ±0.75%t | ±2.2℃ or ±0.75% | |
Type E | Ⅰ | -40~1100 | ±1.5℃ or ±0.4%t | ±1.0℃ or ±0.4% |
Ⅱ | -40~1300 | ±2.5℃ or ±0.75%t | ±1.7℃ or ±0.5% | |
Type J | Ⅰ | -40~750 | ±1.5℃ or ±0.4%t | ±1.1℃ or ±0.4% |
Ⅱ | -40~750 | ±2.5℃ or ±0.75%t | ±2.2℃ or ±0.75% | |
Type T | Ⅰ | -40~350 | ±0.5℃ or ±0.4%t | ±0.5℃ or ±0.4% |
Ⅱ | -40~350 | ±1.0℃ or ±0.75%t | ±1.0℃ or ±0.75% |
OHMALLOY have 20 years in producing the thermocouple alloy wire. In order to ensure the quality of our thermocouple wire, we have the product undergo smelting in a vacuum furnace, argon & hydrogen annealing and continuous wire drawing, among other processes.
For the diameter large than 1.2mm, we usually provide the Oxidized status wire. And for the diameter less than 1.2mm, we can offer bright wire packed on spool such as DIN80, 125, 160, 200.
Before sending out, we test each batch of thermocouple bare wire and will issue the report for each spool or coil of wire.
OHMALLOY’s type K wire has long time stability at high temperature such as 1000 Degree C and the quality was accepted by many customers who is in area space industry, nuclear power industry.
OHMALLOY can also supply the thermocouple alloy wire in cheap cost for making extension cable. OHMALLOY have a lot of advantage in reducing the cost while ensuring the quality of the extension alloy wire as we had large quantity order for that.
Thermocouple type and alloy material:
Name and code of alloy wires | Diameter of wires (mm) | Maximum temperature ℃ | |||||
Positive | Negative | ||||||
Name | Code | Name | Code | Long-time | Short-time | ||
NiCr10 (Chromel) | KP | NiSi3 /(Alumel) (China standard) | KN | Φ0.3 | 700 | 800 | |
Φ0.5 | 800 | 900 | |||||
Φ0.8 Φ1.0 | 900 | 1000 | |||||
NiAl/(Alumel) (IEC standard) | KN | ||||||
Φ1.2 Φ1.6 | 1000 | 1100 | |||||
Φ2.0 Φ2.5 | 1100 | 1200 | |||||
NiCr14.2Si | NP | NiSi4 | NN | Φ3.2 | 1200 | 1300 | |
NiCr10 (Chromel) | EP | CuNi45 (Constantan) | EN | Φ0.3 Φ0.5 | 350 | 450 | |
Φ0.8 Φ1.0 Φ1.2 | 450 | 550 | |||||
Φ1.6 Φ2.0 | 550 | 650 | |||||
Φ2.5 | 650 | 750 | |||||
Φ3.2 | 750 | 900 | |||||
Fe | JP | CuNi45 (Constantan) | JN | Φ0.3 Φ0.5 | 300 | 400 | |
Φ0.8 Φ1.0 Φ1.2 | 400 | 500 | |||||
Φ1.6 Φ2.0 | 500 | 600 | |||||
Φ2.5 Φ3.2 | 600 | 750 | |||||
Cu | TP | CuNi45 (Constantan) | TN | Φ0.2 Φ0.3 | 150 | 200 | |
Φ0.5 Φ0.8 | 200 | 250 | |||||
Φ1.0 Φ1.2 | 250 | 300 | |||||
Φ1.6 Φ2.0 | 300 | 350 |
Thermocouple wire electromotive force (EMF) Tolerance:
Thermocouple Type | Grade | Temperature range ℃ | Electromotive force (EMF) Tolerance | |
IEC (EN)60584 | ASTM E230 | |||
Type K & Type N | Ⅰ | -40~1100 | ±1.5℃ or ±0.4%t | ±1.1℃ or ±0.4% |
Ⅱ | -40~1300 | ±2.5℃ or ±0.75%t | ±2.2℃ or ±0.75% | |
Type E | Ⅰ | -40~1100 | ±1.5℃ or ±0.4%t | ±1.0℃ or ±0.4% |
Ⅱ | -40~1300 | ±2.5℃ or ±0.75%t | ±1.7℃ or ±0.5% | |
Type J | Ⅰ | -40~750 | ±1.5℃ or ±0.4%t | ±1.1℃ or ±0.4% |
Ⅱ | -40~750 | ±2.5℃ or ±0.75%t | ±2.2℃ or ±0.75% | |
Type T | Ⅰ | -40~350 | ±0.5℃ or ±0.4%t | ±0.5℃ or ±0.4% |
Ⅱ | -40~350 | ±1.0℃ or ±0.75%t | ±1.0℃ or ±0.75% |