牌號(hào) | 20MoCrS4 |
對(duì)應(yīng)標(biāo)準(zhǔn) | ISO 4954-1-2024
冷鐓及冷擠壓鋼交貨技術(shù)條件 第1部分:非合金及合金鋼 Steels for cold heading and cold extruding - Technical delivery conditions - Part1: Non-alloy and alloy steels |
歸類 | 合金鋼 |
牌號(hào) | 淬透性帶 符號(hào) | 奧氏體化 溫度 | 范圍 | 離開(kāi)淬火端下列距離(mm)處的HRC | ||||||||||||
1.5 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 20 | 25 | 30 | 35 | 40 | ||||
20MoCrS4
| +H | 910 | max. | 49 | 47 | 44 | 41 | 38 | 35 | 33 | 31 | 28 | 26 | 25 | 24 | 24 |
min. | 41 | 37 | 31 | 27 | 24 | 22 | ||||||||||
+HH | max. | 49 | 47 | 44 | 41 | 38 | 35 | 33 | 31 | 28 | 26 | 25 | 24 | 24 | ||
min. | 44 | 40 | 35 | 32 | 29 | 26 | 24 | 22 | ||||||||
+HL | max. | 46 | 44 | 40 | 36 | 33 | 31 | 29 | 27 | 24 | 22 | 21 | 20 | 20 | ||
min. | 41 | 37 | 31 | 27 | 24 | 22 |