ASTM TM1 Bimetal Strip 5j1480 Tb 140/80 Thermal Bimetal Strip

• Standard: ASTM, GB, DIN
• Certification: ISO
• Surface Treatment: Galvanized
• Technique: Cold Rolled
• Stock: Stock
• Use: Electrical Appliances Product Temperature Control
• Model NO.: 5J1480
• Packing: Standard
• Features: Linear Temperature Can Reach 350 ºC
• Allows The Use of Temperature Range: -70~370ºC
• Elastic Modulus Is Not Less Than: 1.97
• Linear Temperature Range: -20~150
• Resistivity: 0.16
• Density: 8.58
• Temperature Curvature: 8.28%
• The Highest Temperature: 370
• Transport Package: Wooden Case or Cartons
• Specification: Discuss
• Trademark: HUONA
• Origin: Shanghai
• HS Code: 72269990
• Production Capacity: 500 Ton/Month

Product Description

5j1480 Thermal bimetal strip Ni22Cr3/Ni36 TB140/80 ASTM TM1

A bimetal or thermostatic metal is a sheet or strip of two or more composite materials having different coefficients of linear thermal expansion bonded by riveting, brazing or welding. The material with the larger coefficient of thermal expansion (CTE) is considered as the active component, and that of smaller CTE is the passive component. The active component usually has alloys containing iron, manganese, nickel, or chrome in varying amounts. Whereas on the passive side, invar is often chosen, an iron-nickel alloy containing 36% nickel. Some bimetals include a third layer of copper or nickel in between the active and passive sides in order to increase thermal conductivity and decrease the material's electrical resistivity.

Bimetals work with the propensity of metals to expand when heated, and contract when cooled. The resulting change of curvature, or bending, in response to temperature change, is a fundamental property of all thermostatic bimetals. In effect, the temperature change is converted into mechanical displacement. The behaviour of bimetals is predictable and repeatable. The components used for bimetals are selected for their temperature characteristics as well as their thermal conductivity, stability, strength, workability, and electrical properties.

 

shop sign		5j1480
With brand		5j18
Composite layer alloybrand	High expansion layer	Ni22Cr3
	middle layer	--------
	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	-	-	-	≤0.6	≤0.3	0.05	0.02	0.02
Ni22Cr3	21.0~23.0	2.0~4.0	allowance	-	-	-	0.3~0.6	0.15~0.3	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
14.3	±5%	±7%	26.2%±5%	0.8	±5%	-20~180	-70~350	8.2

 

Modulus of elasticity E/GPa	Hardness (HV)		Tensile strength MPa	Allow stress MPa
	High expansion layer	Low expansion layer		minimum	biggest
147~177	270~340	200~255	785~883	196	343