ASTM TM2 Thermal bimetal strip bimetallic sheet Truflex P675R, Chace 7500,Telcon200

• Standard: ASTM, GB
• Certification: ISO
• Surface Treatment: Galvanized
• Technique: Cold Rolled
• Application: circuit breaker
• Stock: Not Stock
• Model NO.: ASTM TM2
• rigidity: -70~320
• features: Than bending is very high, high resistivity
• use: circuit breaker
• density: 7.7
• Allows the use of temperature range: -70~200ºC
• Elastic modulus is not less than: 113000
• Linear temperature range: 90~320
• resistivity: 1.12
• bending: 20.5
• Temperature curvature: 39.4%
• Transport Package: Wooden Case
• Specification: negotiable
• Trademark: tankii
• Origin: China
• HS Code: 7408229000
• Production Capacity: 3000 Tons/Year

Product Description

ASTM TM2 Thermal bimetal strip bimetallic sheet Truflex P675R, Chace 7500,Telcon200

Bimetal Strip ASTM TM2 Kan-thal 200  for Coffee heater switch

ASTM TM2 (Bimetallic strip)

(Common Name: Truflex P675R, Telcon200, Kan-thal 1200)

Bimetallic strip is used to convert a temperature change into mechanical displacement. The strip consists of two strips of different metals which expand at different rates as they are heated, usually steel and copper, or in some cases steel and brass. The strips are joined together throughout their length by riveting, brazing or welding. The different expansions force the flat strip to bend one way if heated, and in the opposite direction if cooled below its initial temperature. The metal with the higher coefficient of thermal expansion is on the outer side of the curve when the strip is heated and on the inner side when cooled

The sideways displacement of the strip is much larger than the small lengthways expansion in either of the two metals. This effect is used in a range of mechanical and electrical devices. In some applications the bimetal strip is used in the flat form. In others, it is wrapped into a coil for compactness. The greater length of the coiled version gives improved sensitivity.

Chemical composition(%)

Grade	C	Si	Mn	P	S	Ni	Cr	Cu	Fe
Ni36	≤0.05	≤0.3	≤0.6	≤0.02	≤0.02	35~37	-	-	Bal.

 

Grade	C	Si	Mn	P	S	Ni	Cr	Cu	Fe
Mn75Ni15Cu10	≤0.05	≤0.5	Bal.	≤0.02	≤0.02	14~16	-	9~11	≤0.8

Composition

Grade	ASTM TM2
High expansion layer	Mn75Ni15Cu10
Low expansion layer	Ni36

Typical Physical properties

Density (g/cm3)	7.7
Electrical resistivity at 20ºC(OMmm^2/m)	1.13 ±5%
Thermal conductivity, λ/ W/(m*ºC)	6
Elastic Modulus, E/ Gpa	113~142
Bending K / 10^-6 ºC^-1(20~135ºC)	20.8
Temperature bending rate F/(20~130ºC)10^-6ºC^-1	39.0%±5%
Allowable temperature (ºC)	-70~ 200
Linear temperature (ºC)	-20~ 150

Application: The material is mainly in automatic control devices and instrumentation (eg: exhaust thermometers, thermostats, voltage regulators, temperature relay, automatic protection switching, diaphragm meters, etc.) make temperature control, temperature compensation, current limit, temperature indicator and other heat-sensitive components.

Feature: The basic characteristics of Thermostat Bimetallic is bending deformation with temperature changes, resulting in a certain moment.

Thermostat Bimetallic Strip expansion coefficient is different from the two or more layers of metal or alloy along the entire contact surface firmly bonded, having a temperature-dependent shape change occurs thermosensitive functional composites. Wherein the higher expansion coefficient of the active layer is a layer called a low coefficient of expansion of the layer is named passive layer.

Style of supply

ASTM TM2 - Strip - Width= 5~120 mm; Thickness= 0.1~3mm