Introducing some trivia about springs! Our company uses SUS631-CP material instead of O material.
The JIS standard heat treatment symbol for SUS631-CSP includes four types: O material for solution heat treatment finish, and 1/2H, 3/4H, and H for cold-rolled finish. However, due to the lack of availability of O material, our company uses SUS631-CP material instead. The chemical composition and mechanical properties of SUS631-CP and SUS631-CSPO materials are the same, but there are differences in plate thickness tolerance and manufacturing processes. The characteristic of SUS631, similar to wire, is that its tensile strength and hardness increase due to precipitation hardening heat treatment (because the added aluminum precipitates), but the conditions differ from those of wire (air-cooled after heating at 470±10°C for 1 hour). For more details, please refer to the related links. 【SUS631-CSP Heat Treatment Conditions】 ■Heat Treatment Name: CH ・Air-cooled after heating at 470±10°C for 1 hour *For more details, please refer to the PDF document or feel free to contact us.
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【SUS631-CP Heat Treatment Conditions】 ■Heat Treatment Name: RH950 Fahrenheit 950 ≈ Celsius 510 - Hold at 955±10°C for 10 minutes, then air cool to room temperature, cool to -73±6°C within 24 hours and hold for 8 hours, then hold at 510±10°C for 60 minutes and air cool. ■Heat Treatment Name: TH1050 Fahrenheit 1050 ≈ Celsius 565 - Hold at 760±15°C for 90 minutes, cool to below 15°C within 1 hour and hold for 30 minutes, then hold at 565±10°C for 90 minutes and air cool. *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Sugawara Corporation actively responds to customer needs so that customers can place orders with peace of mind and trust. We create high-quality products using the latest technology, provide maximum satisfaction to global customers, and enhance Sugawara's reliability by continuously delivering high quality. Through our products in highly public utility sectors such as power systems, transportation systems, and urban development systems, we contribute to society.