1. Patented Drawn Spring Steel Wire
Two types are compared: SH (type C) and DH (type D). Both are suitable for high static and medium dynamic conditions, with a maximum temperature of 80°C. They are standardized under EN 10270-1 and have equivalents in various international standards including NFA, ASTM, and JIS.

2. Oil Tempered Valve Spring Steel Wire
These materials are designed for high dynamic conditions with a maximum temperature range of 250°C to 300°C. They are standardized under EN 10270-2 and have equivalents in international standards such as ASTM and JIS.

3. Rust-Proof Spring Steel
Several types are listed, each with different corrosion resistance and temperature limits ranging from 250°C to 350°C. They are standardized under EN 10270-3 and EN 10088-3, with equivalents in international standards like ASTM, JIS, and BS. Applications include corrosion-resistant springs, non-magnetic springs, and springs for use in seawater.

4. Non-Magnetic Springs
Materials such as brass wire, phosphorous bronze, and copper beryllium are included, with maximum temperatures ranging from 100°C to 200°C. These are standardized under EN 12166 and have equivalents in international standards.

5. High-Temperature and Corrosive Environment Springs
Materials like Hastelloy C4, Inconel X750, Nimonic 90, and Duratherm are designed for extreme conditions, with maximum temperatures ranging from 450°C to 650°C. These materials are suitable for high-temperature areas and extremely corrosive atmospheres.

Key Parameters
The document provides a detailed comparison of material codes, maximum temperature limits, and their applications across different international standards, highlighting the versatility and specific use cases of each material type.