ASTM TM2 Thermostatic Bimetal Strip with 1.13 Ω·mm²/m Resistivity and -70°C to 200°C Temperature Range
Price:
nigotiable
MOQ:
100kg
Delivery Time:
9-20 days
Brand:
TANKII
Product Description
ASTM TM2 Thermostatic Bimetal Strip Overview
ASTM TM2 thermostatic bimetal strip is engineered for applications requiring high thermal sensitivity and enhanced resistivity. This material features excellent thermal response characteristics while maintaining operational reliability across a wide temperature range.
Key Advantage: TB208/110 grade offers superior thermal sensitivity and higher resistivity, enabling improved instrument sensitivity, reduced component size, and increased force generation.
Material Composition
Layer Structure
| Grade | ASTM TM2 |
|---|---|
| High Expansion Layer | Mn75Ni15Cu10 |
| Low Expansion Layer | Ni36 |
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. |
| Mn75Ni15Cu10 | ≤0.05 | ≤0.5 | Bal. | ≤0.02 | ≤0.02 | 14~16 | - | 9~11 | ≤0.8 |
Physical Properties
| Property | Value |
|---|---|
| Density (g/cm³) | 7.7 |
| Electrical Resistivity at 20°C (Ω·mm²/m) | 1.13 ±5% |
| Thermal Conductivity, λ (W/(m·°C)) | 6 |
| Elastic Modulus, E (GPa) | 113~142 |
| Bending K (10⁻⁶ °C⁻¹, 20~135°C) | 20.8 |
| Temperature Bending Rate F (20~130°C, 10⁻⁶°C⁻¹) | 39.0% ±5% |
| Allowable Temperature (°C) | -70~200 |
| Linear Temperature (°C) | -20~150 |
Technical Features
- High thermal sensitivity for precise temperature response
- Enhanced resistivity of 1.13 Ω·mm²/m at 20°C
- Wide operating temperature range from -70°C to 200°C
- Dual-layer construction with Mn75Ni15Cu10 active layer and Ni36 passive layer
- Bending coefficient of 20.8×10⁻⁶ °C⁻¹ for reliable thermal deformation
Applications
ASTM TM2 thermostatic bimetal strip is primarily used as non-magnetic, non-matching ceramic sealing material in gyroscopes and other electric vacuum devices. The material's thermal deformation properties make it ideal for control systems and temperature sensors in precision measuring instruments.
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Company
Shanghai Tankii Alloy Material Co.,Ltd
Location
1900 Mudanjiang Road, Baoshan District, 201999, Shanghai, China
Contact Person
Martin Lee