Characteristics: (1) mirror polishing performance is very good. Very few impurities. (2) electrical processing performance is very good. (3) welding performance is very good. (4) does not require heat treatment for direct manufacturing mold. (5) The material hardness HRC36 ~ 45. Use: household goods transparent thin scales, gear, lamp, the camera body front panel audio ashtray cover the cleaner body, transparent panel connectors. Household furniture cleaning tank, bowl, file cabinet, card, pens, kitchen utensils, toothbrushes, toilet utensils, toys, computers transparent cover, the keyboard, the camera body, the lens barrel, the spread of the phone body factory state: Pre-hardened HB370- 400 quenching hardness: HRC52 main purposes: high glossy, high-precision plastic mold. Features Applications: Good high purity, high degree of mirror, polished performance, excellent anti-rust anti-acid ability, heat treatment variant is suitable for small mirror mold, quenching acidity high defense, can not guarantee the cooling pipe corrosion, for PCV, PP. , EP, PC, PMMA plastic, food industrial machinery parts.