ASTM TM12 Thermal bimetal alloy strip

• Standard: GB
• Certification: ISO
• Surface Treatment: Galvanized
• Technique: Cold Rolled
• Application: circuit breaker
• Stock: Not Stock
• Model NO.: ASTM TM12
• features: Low thermal performance
• density: 8.3
• Allows the use of temperature range: -70~370ºC
• Elastic modulus is not less than: 1.76
• Linear temperature range: -20~150
• resistivity: 0.29
• bending: 13.5
• Temperature curvature: 25.4%
• The highest temperature: 480
• use: Thermal relay, circuit breaker, motor overload sat
• Transport Package: Wooden Case
• Specification: negotiable
• Trademark: tankii
• Origin: China
• HS Code: 7408229000
• Production Capacity: 3000 Tons/Year

Product Description

ASTM TM12 Thermal bimetal alloy strip

overview 
Thermal bimetal strip is by the different expansion coefficient of two or more than two layers of metal or metal solid combination, and along the entire interface varies with temperature and the thermal function of shape changes in composite materials.One of high expansion coefficient become active layer, low expansion coefficient becomes passive.When requirements with high resistivity, but heat sensitive resistance performance is essentially the same type of thermal bimetal series, can be added between the two layers of different thickness of middle layer as a shunt layer, is to achieve the purpose of control different resistivity.

The basic characteristic of the thermal bimetal is changing with temperature and temperature deformation, resulting in a certain moment.Many devices use this feature to convert heat energy into mechanical work to achieve automatic control.Thermal bimetal used for control system and temperature sensor in the measuring instrument.

Main features: Linear temperature range is higher, low thermal performance, can be used at high temperature.

shop sign		ASTM TM12
With brand
Composite layer alloybrand	High expansion layer	Ni22Cr3
	middle layer	Ni
	Low expansion layer	Ni36

 

Chemical composition

shop sign	Ni	Cr	Fe	Co	Cu	Zn	Mn	Si	C	S	P
									≤
Ni36	35.0~37.0	-	allowance	-	-	-	≤0.60	≤0.3	0.05	0.02	0.02
Ni	≥99.3	-	≤0.15	-	≥0.15		-	-	0.15	-	0.015
Ni22Cr3	21.0~23.0	2.0~4.0	allowance	-	-	-	0.3~0.6	0.15~0.30	0.25~0.35	0.02	0.02

performance

Than bending K(20~135ºC)			Temperature curvature F/(greenhouse ~ 130 ºC)	resistivity		Linear temperature / ºC	Allows the use of temperature / ºC	Density (g/cm after)
Nominal value	Allowable deviation			Standard values	Allowable deviation
	Level 1	Level  2
13.5	±5%	±10%	25.4%±5%	0.29	±10%	-20~150	-70~370	8.3