Cu-CuNi (constantan) Thermocouple (Type T) Alloy Class 1 Accuracy

• Customization: Available
• Application: Aviation, Electronics, Industrial, Medical, Chemical
• Standard: JIS, GB, DIN, ASTM, AISI
• Model NO.: T
• Purity: CuNi45
• Alloy: Alloy
• Type: Nickel Wire
• Chemical Compositon: 55%Cu and 45%Ni
• Temperature Range: -200~1200
• Samples: Available
• Types: Any Type Available
• Grade: I/II/III
• Transport Package: Roll/Wooden Case/or Other
• Specification: Customized
• Trademark: UALLOY
• Origin: Zhejiang China
• HS Code: 75052200
• Production Capacity: a Ton/Week

Product Description

Cu-CuNi(constantan) thermocouple (Type T) alloy Class 1 Accuracy 

1. Description
Type T thermocouple wire is composed of a copper (+) wire versus a nickel-45% copper (-) wire. The Type of thermocouple is frequently referred to as copper-constantan. This type of thermocouple can be used in oxidizing, reducing, or inert atmospheres with a service temperature range between -200°C and 370°C (-330°F to 700°F). The high temperature use of this thermocouple is also limited due to rapid oxidation of the copper element. The Type T thermocouple is one of the few thermocouples which have established limits of error for use in subzero and cryogenic applications. This is possible due to the Type T's superior corrosion resistance in moist environments.

2. Chemical Content(%)

Type T	Ni	Cu
+Copper (TP)	--	100
-Constantan (TN)	45	55

3. Physical Properties

Type T	Copper (TP)	Constantan (TN)
Density/(g/cm^3)	8.9	8.8
Resistivity at 20ºC/(uΩ·cm)	1.71	49.0
Tensile Strength/(MPa)	>=196	>=390

4. Working Temperature of thermocouple wire

Diameter/mm	Long time Working temperature /ºC	Short period Working temperature /ºC
0.2, 0.3	150	200
0.5, 0.8	200	250
1.0,  1.2	250	300
1.6,  2.0	300	350

5. Type and Grade of thermocouple bare wire

Thermocouple Type	Grade	Temperature Range(°C)	Allowable Deviation
type K and type N	I	-40-1100	±1.5°C or±0.4%t
	II	-40-1300	±2.5°C or ±0.75%t
	III	-200-40	±2.5°C or ±1.5%t
type E	I	-40-1100	±1.5°C or ±0.4%t
	II	-40-1300	±2.5°C or ±0.75%t
	III	-200-40	±2.5°C or±1.5%t
type J	I	-40-750	±1.5°C or ±0.4%t
	II	-40-750	±2.5°C or ±0.75%t
type T	I	-40-350	±0.5°C or± 0.4%t
	II	-40-350	±1.0°C or± 0.75%t
	III	-200-40	±1.0°C or± 1.5%t
NiCr-AuFe0.07	I	-270-0	±0.5°C
	II		±1.0°C

6. Specification of thermocouple bare wire

Positive		Negative		Diameter(mm)	Maximum Temperature(°C)
name	code	name	code		long-time using	short-time using
NiCr10(Chromel)	KP	NiSi3(Alumel)	KN	Φ0.3	700	800
				Φ0.5	800	900
				Φ0.8  Φ1.0	900	1000
				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(Copel)	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(Iron)	JP	CuNi45(Copel)	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(Copper)	TP	CuNi45(Copel)	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