表面洛氏硬度计硬度标尺技术条件(表2-2)
日期:2025-04-25 21:47
浏览次数:1986
摘要:
表面洛氏硬度计硬度标尺技术条件(表2-2)
表面洛氏 | 硬度 | 压头类型 | 初试验力F0(N) | 主试验力F1(N) | 总试验力 | 适用范围 |
15N | HR15N | 120° | 29.42 | 117.7 | 147.1 | 70~94HR15N |
30N | HR30N | 264.8 | 294.2 | 42~86HR30N | ||
45N | HR45N | 411.9 | 441.3 | 20~77HR45N | ||
15T | HR15T | 1.5875mm | 29.42 | 117.7 | 147.1 | 67~93HR15T |
30T | HR30T | 264.8 | 294.2 | 29~82HR30T | ||
45T | HR45T | 411.9 | 441.3 | 10~72HR45T |