Alleima® TD is a nickel-chromium alloy characterized by:
- Excellent resistance to high temperature corrosion, particularly in oxidizing conditions
- Good strength at high temperatures
This alloy is suitable for a wide range of applications where resistance to both heat and corrosion are requirements.
Chemical composition (nominal)
| C | Si | Mo | Mn | P | S | Fe | Cr | Ni |
|---|---|---|---|---|---|---|---|---|
| <0.02 | 1.4 | 3 | <0.05 | <0.01 | <0.005 | <1.0 | 22 | Balance |
Others: REM
Applications
Alleima® TD is designed and developed for Mineral Insulating Cable applications (MIC). Its high temperature corrosion resistance makes this Nickel-Chromium alloy suitable for temperatures up to 1250 °C for thermocouple protection tubes.
Forms of supply
Alleima® TD seamless nickel alloy tubing is supplied bright annealed in the outside diameter 26.67 mm (1.050 in. OD; 0.824 in. ID) and wall-thickness 2.87 mm (0.113 in.), ¾ SCH 40.
Tolerances
| Size OD, mm |
Tolerances OD, mm |
Wall Thickness % |
| 26.67 | 0.3 | +/- 10 |
Please contact Alleima for more information regarding other dimensions and finishes.
Mechanical properties
At 20°C (68°F)
Metric units
| Proof strength | Tensile Strength | Elongation | Hardness HRB |
||
| Rp0.2a | Rm | A2” | |||
| MPa | ksi | MPa | ksi | % | Approx. |
| >310 | >30 | >600 | >87 | >40 | 85-90 |
1 MPa = 1 N/mm2
1) Rp0.2 corresponds to 0.2% offset yield strength.
Physical properties
Density, at 20°C; 68°F; 8.33 g/cm3, 0.30 lb/in3
Thermal conductivity
Metric units, x10-6/°C
| Temperature, °C | W/(m °C) | Temperature, °F | Btu/(ft h°F) |
| 23 | 11,0 | 73 | 6,5 |
| 100 | 12,5 | 200 | 7,0 |
| 200 | 14,5 | 400 | 8,5 |
| 300 | 16,0 | 600 | 9,5 |
| 400 | 18,0 | 800 | 10,5 |
| 500 | 19,5 | 1000 | 12,0 |
| 600 | 25,0 | 1200 | 15,0 |
| 700 | 27,5 | 1400 | 16,0 |
| 800 | 28,5 | 1600 | 16,5 |
| 900 | 29,5 | 1800 | 18,5 |
| 1000 | 32,5 | 2000 | 20,0 |
| 1100 | 34,5 | ||
| 1200 | 38,0 |
Specific heat capacity
| Temperature, °C | J/(kg °C) | Temperature, °F | Btu/(lb °F) |
| 23 | 445 | 73 | 0,105 |
| 100 | 465 | 200 | 0,110 |
| 200 | 485 | 400 | 0,115 |
| 300 | 505 | 600 | 0,120 |
| 400 | 520 | 800 | 0,125 |
| 500 | 535 | 1000 | 0,130 |
| 600 | 630 | 1200 | 0,150 |
| 700 | 635 | 1400 | 0,155 |
| 800 | 655 | 1600 | 0,160 |
| 900 | 680 | 1800 | 0,170 |
| 1000 | 720 | 2000 | 0,175 |
| 1100 | 740 | ||
| 1200 | 785 |
Thermal expansion
Metric units, x10-6/°C
| Temperature, °C | Per °C | Temperature, °F | Per °F |
| 30-100 | 12.5 | 86-200 | 7.0 |
| 30-200 | 13.5 | 86-400 | 7.5 |
| 30-300 | 14.0 | 86-600 | 7.5 |
| 30-400 | 14.0 | 86-800 | 8.0 |
| 30-500 | 14.0 | 86-1000 | 8.0 |
| 30-600 | 15.0 | 86-1200 | 8.5 |
| 30-700 | 15.5 | 86-1400 | 9.0 |
| 30-800 | 16.0 | 86-1600 | 9.0 |
| 30-900 | 16.5 | 86-1800 | 9.5 |
| 30-1000 | 17.0 | 86-2000 | 9.5 |
| 30-1100 | 17.5 | - | - |
| 30-1200 | 18.0 | - | - |
Resistivity
| Temperature, °C | μΩm | Temperature, °F | ΩCirc.mil/feet. |
| 20 | 1.19 | 68 | 715 |
| 100 | 1.25 | 200 | 750 |
| 200 | 1.26 | 400 | 761 |
| 300 | 1.28 | 600 | 770 |
| 400 | 1.30 | 800 | 784 |
| 500 | 1.32 | 1000 | 794 |
| 600 | 1.29 | 1200 | 776 |
| 700 | 1.27 | 1400 | 766 |
| 800 | 1.27 | 1600 | 765 |
| 900 | 1.23 | 1800 | 743 |
| 1000 | 1.22 | 2000 | 732 |
| 1100 | 1.20 |
Modulus of elasticity, x103, annealed condition
| Temperature, °C | MPa | Temperature, °F | ksi |
| 20 | 184 | 75 | 26.7 |
| 100 | 182 | 200 | 26.4 |
| 200 | 176 | 400 | 25.6 |
| 300 | 171 | 600 | 24.7 |
| 400 | 166 | 800 | 23.9 |
| 500 | 159 | 1000 | 22.7 |
| 600 | 151 | 1200 | 21.5 |
| 700 | 144 | 1400 | 20.4 |
| 800 | 138 | 1600 | 19.3 |
| 900 | 130 | 1800 | 17.5 |
| 1000 | 117 | 2000 | 15.1 |
| 1100 | 103 | 2200 | 14.1 |
| 1200 | 97 |
Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Alleima materials.