Low Thermal Expansion Alloy and High-Purity / High-Corrosion-Resistance Stainless Steel
Front-end Process
Manufacturing and Sales of Low Thermal Expansion Alloys High-Purity / High-Corrosion-Resistance Stainless Steel
- Supports small-lot production (300 kg to 2 tons)
- Recyclability through collection and remelting of discarded molds and other customer materials
Handled by: Nippon Koshuha Steel Co., Ltd.
Product Lineup
Low Thermal Expansion Alloy
- Used in equipment such as lithography systems
| Steel Grade Name by Nippon Koshuha Steel Co., Ltd. | Equivalent Steel Grade | Main Components | Example of Manufacturing Size | Physical Properties |
|---|---|---|---|---|
| Rolled Round Bar | Thermal Expansion Coefficient～100℃ （×10-6/℃） |
|||
| KTAIN | Invar | 36Ni-Fe | Φ20～120 | 0.5～2.0 |
| KTASI | Super Invar | 32Ni-4Co-Fe | 0.01～0.5 |
- *Wire rods also manufacturable
High-Hardness Martensitic Stainless Steel
- Used in linear motion bearings incorporated into semiconductor manufacturing equipment
- Adopted by major linear guide manufacturers
| Steel Grade Name by Nippon Koshuha Steel Co., Ltd. | Main Components | Example of Manufacturing Size | Features |
|---|---|---|---|
| Rolled Wire Rod | |||
| SMX70 | 0.6%C-13%Cr | Φ5.5～24 |
|
- ※Bar steel also manufacturable
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