Bl2 Thermotatic Bimetal Strip for Thermal Control Switch

Product Description

BL2 thermal bimetal strip
A 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.
Diagram of a bimetallic strip showing how the difference in thermal expansion in the two metals leads to a much larger sideways displacement of the strip

Grade	BL2
High expansion layer	Ni20Mn6
Low expansion layer	Ni36

Description:
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
Ni20Mn6	≤0.05	0.15~0.3	5.5~6.5	≤0.02	≤0.02	19~21	-	-	Bal.

Physical properties
>Density (g/cm3): 8.1
> Allowable temperature (ºC): -70~ 350
Linear temperature (ºC): -20~ 180
>Electrical resistivity (μΩ*m): 0.8 ±5% (20ºC)
>Thermal conductivity ( W/m. ºC): 12
>Bending K / 10-6 ºC-1(20~135ºC): 15
> Elastic Modulus, E/GPa 147~177

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.

---

>> Stainless Steel White Sippy Cup 15 oz Skinny Sublimation Tumbler
>> 316 Stainless steel crisper 3pcs set Leak-Proof Large Bento salad container Stainless Steel Food Storage Container with lids
>> Expanding File with Handle, Heming and Button (E1117)
>> Shanding Excavator SD17b 1.6 Ton From China with Cheap Price Small Digger
>> ASTM D1693 Environmental Stress Cracking Tester uo to 95 Degree
>> Fast Food Lollipops Round Shape Glow Stick Fluorescent Lollipop
>> Semi Auto / Semi Automatic Plastic Water Bottle Molding Machine
>> with Good Goods Microcomputer Fully Automatic Unwinding and Cutting Machine Laundry Detergent Roll to Sheet Cutter
>> Taijia HT-225A Digital Display Schmidt Rebound Hammer Manual Concrete Test Hammer Supplier
>> Customizable FRP Rebar Production Line for Global Suppliers
>> Wholesale Customized Slippers Disposable Linen Slides Slippers for Women Men Indoor Outdoor Platform Slipper Washable Home Hotel Slippers EVA Sole Linen Indoor
>> Gym Equipment Dumbbell Sit up Bench for Sale Free Weights Foldable Bench
>> top ranking fishing tackle fishing rods on line order ship trade shop
>> Fit-20606-1-L40 Long Arm Compound Feed Heavy Duty Lockstitch Sewing Machine
>> Natural Mulberry Fruit Extract Powder for Antioxidant Support Drinking Powder
>> High Precision and Efficiency and Cheap Price Ty-300 Instrument CNC Lathe
>> Air Conditioner Machine Square Coil Duct Line 2 Blkma Factory
>> Factory Build Automatic Production Line Equipment Machine Air Conditioner Assembly Line Automatic
>> Composite Foam Panel for Making Whiteboard 600*450mm (Magnetic)
>> Sephcare high quality cosmetic pigment private label glitter eyeshadow