| Hot Rolled Steel (M20) |
275~370 |
|
| 1/4 hard (H01), 0.51≤t≤0.91 (B-Scale) |
340~405 |
(HR)
46~71 |
| 1/4 hard (H01), t＞0.91 (B-Scale) |
340~405 |
(HR)
48~73 |
| 1/4 hard (H01), 0.30≤t≤0.71 (Superficial 30T) |
340~405 |
(HR)
45~65 |
| 1/4 hard (H01), t＞0.711 (Superficial 30T) |
340~405 |
(HR)
47~67 |
| 1/2 Hard (H02), 0.51 ≤ t ≤ 0.91 (B-Scale) |
395~485 |
(HR)
67~81 |
| 1/2 Hard (H02), t > 0.91 (B-Scale) |
395~485 |
(HR)
69~83 |
| 1/2 Hard (H02), 0.30 ≤ t ≤ 0.71 (Superficial 30T) |
395~485 |
(HR)
63~69 |
| 1/2 Hard (H02), t > 0.711 (Superficial 30T) |
395~485 |
(HR)
65~72 |
| 3/4 hard (H03), 0.51≤t≤0.91 (B-Scale) |
430~510 |
(HR)
74~84 |
| 3/4 hard (H03), t＞0.91 (B-Scale) |
430~510 |
(HR)
76~86 |
| 3/4 hard (H03), 0.30≤t≤0.71 (Superficial 30T) |
430~510 |
(HR)
66~71 |
| 3/4 hard (H03), t＞0.711 (Superficial 30T) |
430~510 |
(HR)
68~73 |
| Hard (H04), 0.51 ≤ t ≤ 0.91 (B-Scale) |
485~565 |
(HR)
81~88 |
| Hard (H04), t > 0.91 (B-Scale) |
485~565 |
(HR)
83~90 |
| Hard (H04), 0.30 ≤ t ≤ 0.71 (Superficial 30T) |
485~565 |
(HR)
70~74 |
| Hard (H04), t > 0.711 (Superficial 30T) |
485~565 |
(HR)
72~76 |
| Superhard (H06), 0.51 ≤ t ≤ 0.91 (B-Scale) |
525~605 |
(HR)
86~92 |
| Superhard (H06), t > 0.91 (B-Scale) |
525~605 |
(HR)
88~94 |
| Superhard (H06), 0.30 ≤ t ≤ 0.71 (Superficial 30T) |
525~605 |
(HR)
71~75 |
| Superhard (H06), t > 0.711 (Superficial 30T) |
525~605 |
(HR)
73~77 |
| Spring (H08), 0.51 ≤ t ≤ 0.91 (B-Scale) |
580~650 |
(HR)
89~93 |
| Spring (H08), t > 0.91 (B-Scale) |
580~650 |
(HR)
91~95 |
| Spring (H08), 0.30 ≤ t ≤ 0.71 (Superficial 30T) |
580~650 |
(HR)
73~77 |
| Spring (H08), t > 0.711 (Superficial 30T) |
580~650 |
(HR)
74~78 |
