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|
表面洛氏硬度标尺 |
硬度符号 |
压头类型 |
初试验力F0(N) |
主试验力F1(N) |
总试验力F0+ F1(N) |
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 |
|
29.42 |
117.7 |
147.1 |
67～93HR15T |
|
30T |
HR30T |
264.8 |
294.2 |
29～82HR30T |
||
|
45T |
HR45T |
411.9 |
441.3 |
10～72HR45T |
取自国家标准GB/T230.1-2004 注：力值单位9.8N=1kg)
