Low thermal expansion cast iron and cast steel 'Hino GD Invar' with excellent castability and machinability.
Stable supply available from one unit to large lots! We have a track record of delivery in various industrial machinery such as semiconductor manufacturing equipment, machine tools, precision measuring instruments, and vacuum pumps.
The "Hino GD Invar" is a low thermal expansion material that achieves stable low thermal expansion, castability, and machinability through the optimization of alloy components and heat treatment. It has a proven track record in various industrial machines, including semiconductor manufacturing equipment, machine tools, precision measuring instruments, and vacuum pumps. 【Features】 ■ Linear Expansion Coefficient It has a low thermal expansion coefficient of α = 1.0 to 3.5 ppm/K (average from 20 to 50°C). ■ Castability By optimizing the alloy structure, it excels in suppressing casting defects compared to typical low thermal expansion cast iron. ⇒ It is suitable for parts with complex shapes or those prone to casting defects. ■ Machinability It offers superior machinability compared to typical low thermal expansion cast iron and difficult-to-machine materials like Invar. ⇒ It is suitable for precision machined products that require high accuracy. ■ Compatible with sand casting and lost-wax manufacturing processes ⇒ It enables stable supply regardless of size or lot with appropriate manufacturing processes. *Development of new materials and customization of materials according to customer requests are possible! Please feel free to contact us.
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basic information
【Lineup and Features】 ■EG3 <FC Series> - Coefficient of linear expansion: α = 2.5–3.5 ppm/K (average 20–50°C) - FC series material - Suitable for components requiring damping due to high attenuation - Excellent machinability ■ED3 <FCD Series> - Coefficient of linear expansion: α = 2.5–3.5 ppm/K (average 20–50°C) - FCD series material with increased C, finely dispersed - Improved castability and machinability for thin-walled and complex shapes - Control of sphericity with trace elements to suppress casting defects in thick sections ■ED2 <FCD Series> - Coefficient of linear expansion: α = 1.0–2.0 ppm/K (average 20–50°C) - Based on ED3, reduced C and Si, achieving low expansion comparable to Invar through melt treatment and heat treatment *For more details, please refer to the PDF document or feel free to contact us.*
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Applications/Examples of results
【Usage Examples】 ■ED2: Semiconductor manufacturing equipment (fixed holders, etc.), machine tools (spindles, etc.), FA equipment, etc. ■ED3: Vacuum pumps, semiconductor manufacturing equipment (fixed holders, etc.), precision measuring instruments (calibration equipment, etc.) ■EG3: Machine tools (tables, etc.), precision measuring instruments (calibration equipment, etc.) *For more details, please refer to the PDF document or feel free to contact us.
Line up（4）
| Model number | overview |
|---|---|
| ED1 (Ultra Low Expansion) | Linear expansion coefficient: approximately 1.0 ppm/K, Young's modulus: 100~120 GPa, tensile strength: 400~500 MPa, elongation: 20~30%, hardness: 100~120 HB. |
| ED2 (extremely low expansion) | Linear expansion coefficient: approximately 2.0 ppm/K, Young's modulus: 100~120 GPa, tensile strength: 400~500 MPa, elongation: 10~20%, hardness: 150~170 HB. |
| ED3 (Low Expansion) | Linear expansion coefficient: 2.5~3.5 ppm/K, Young's modulus: 120~130 GPa, tensile strength: 400~500 MPa, elongation: 10~20%, hardness: 130~170 HB |
| EG3 (Low Expansion / High Damping) | Linear expansion coefficient: 2.5~3.5 ppm/K, Young's modulus: 80~90 GPa, tensile strength: 100~200 MPa, elongation: -, hardness: 90~130 HB |
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Company information
Hinode Holdings is a professional casting group comprising experts in cast iron, cast steel, aluminum casting, machining, and logistics. Using the collective strength of our group, we solve challenges across design, development, production, and procurement, such as "weight reduction and vibration suppression of equipment parts," "precision machining," and "complexities in supplier management and ordering." From the development stage of equipment to VA/VE for mass-produced machines, leave it to Hinode. ■ Target Industries Semiconductor and electronic component manufacturing equipment (Frames, bases, chambers, vacuum pumps, precision parts made of low thermal expansion cast iron, etc.) Machine tools (Beds, columns, and beams made of cast iron or mineral casting) Industrial robots (Bases, casings, and arms) Transportation equipment and construction machinery (Engines, drivetrains, hydraulic parts, and undercarriage components) Shipbuilding and marine equipment (Sheaves, casings) ■ Target Processes / Materials Processes: Material development & selection, structural design, prototyping, mass production, machining, assembly, quality control, global procurement, and domestic/international logistics. Materials: Cast iron (FC/FCD), aluminum casting, cast steel, stainless cast steel, low thermal expansion materials, heat-resistant cast steel, wear-resistant materials, mineral casting, and others.
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