Physical Properties
| Properties | Inconel* (NCF600) SNSI |
Pure Molybdenum SNSM |
Hastelloy* C-276 (NW0276) SNSH-C276 |
Hastelloy* C-22 (NW6022) SNSH-C22 |
Nickel (NW2201) SNSN |
Super Invar SNSIV |
Phosphor Bronze (C5191) SNSP |
Aluminum Alloy (A5056) SNSA |
|---|---|---|---|---|---|---|---|---|
| Specific Gravity | 8.42 | 10.2 | 8.89 | 8.61 | 8.89 | 8.15 | 8.83 | 2.64 |
| Longitudinal Elastic Modulus (GPa) | 207 | 327 | 205 | 209 | 206 | 132 | 105 | 71.7 |
| Thermal Conductivity (W/(m・K) | 16.7 | 142 | － | － | 79.5 | 10.47 | 67 | 112 |
| Linear Expansion Coefficient（K-1) | 13.4×10-6 | 5.1×10-6 | 11.2×10-6 | 12.4×10-6 | 13.4×10-6 | 0.69×10-6 | 18×10-6 | 24.1×10-6 |
| Electric Resistance (μΩ・m) | 1.0 | 0.058 | 1.3 | 1.2 | 0.085 | 0.77 | 0.13 | 0.064 |
- Values in chart are for reference only. They are not guaranteed values.
Chemical Resistance of Ceramic Screws
| Chemical Name | Temperature | Hour | Effect |
|---|---|---|---|
| 35% Hydrochloric Acid | Boiling | 30 minutes | ◎ |
| 70% Nitric Acid | Boiling | 30 minutes | ◎ |
| 98% Sulfuric Acid | Boiling | 30 minutes | ◎ |
| 90% Phosphoric Acid | Boiling | 30 minutes | 〇 |
| 60% Hydrofluoric Acid | 20℃ | 24 hours | △ |
| 10% Potassium Hydroxide | 80℃ | 7 Days | ◎ |
| Potassium Hydroxide | 500℃(Boiling) | 24 hours | △ |
| Sodium Hydroxide | 500℃(Boiling) | 24 hours | 〇 |
| Sodium Carbonate | 900℃(Boiling) | 24 hours | 〇 |
| Sodium Sulfate | 1000℃(Boiling) | 24 hours | ◎ |
| Potassium Fluoride | 90℃(Boiling) | 4 hours | × |
- ◎：No Corrosion
- 〇：Slight Corrosion
- △：Moderate Corrosion
- ×：Heavy Corrosion
- When tightening ceramic screws, use a torque
driver or torque wrench and do not exceed the
torsional torque.The recommended torque is
50% of the torsional torque.
| M | Torsional Torque (N・m) |
|---|---|
| M3 | 0.04 |
| M4 | 0.05 |
| M5 | 0.10 |
| M6 | 0.15 |
| M8 | 0.30 |
| M10 | 0.50 |
with performance conditions. Always carry out
tests under performance conditions similar to
actual conditions in advance.
Take care when handling these screws.
specifications such as ventilation holes,
dimensions, shapes, and cleanroom washing
are available. Please contact us for details.
