Tk15120 Precision Alloy Strips Thermal Bimetal Strip For Fire Alarms
Precise alloy strips Thermal bimetal strip 5j15120(5j14)
Main features: high heat sensitive properties and high resistivity, but lower elastic modulus and allowed stress, can increase the sensitivity of the instrument, smaller size and increase the reaction.
| shop sign | 5j15120 | |
| With brand | 5j14 | |
| Composite layer alloybrand |
High expansion layer | Mn75Ni15Cu10(Mn72Ni10Cu18) |
| middle layer | -------- | |
| Low expansion layer | Ni45Cr6 | |
Chemical composition
| shop sign | Ni | Cr | Fe | Cu | Mn | Si | C | S | P |
| ≤ | |||||||||
| Ni45Cr6 | 44.0~45.0 | 5.0~6.5 | allowance | - | 0.3~0.6 | 0.15~0.3 | 0.05 | 0.02 | 0.02 |
| Mn72Ni10Cu18 | 8.0~11.0 | - | ≤0.8 | 17.0~19.0 | Bal | ≤0.5 | 0.05 | 0.03 | 0.02 |
| Mn75Ni15Cu10 | 14.0~16.0 | - | ≤0.8 | 9.0~11.0 | Bal | ≤0.5 | 0.05 | 0.02 | 0.03 |
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 | |||||||
| 15.3 | ±5% | ±5% | 28.5%±5% | 1.25 | ±5% | -20~200 | -70~200 | 7.6 |
| Modulus of elasticity E/GPa |
Hardness (HV) | Tensile strength MPa |
Allow stress MPa | ||
| High expansion layer | Low expansion layer | minimum | biggest | ||
| 123~162 | 190~240 | 205~260 | 736~834 | 147 | 294 |
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.
Shanghai Tankii Alloy Material Co., Ltd. specialized in production of thermocouple wire, thermocouple cable, thermocouple connector, and other thermocouple products.
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