牌號(hào) | 20MnB4 |
歐標(biāo)鋼號(hào) | 1.5525 |
對(duì)應(yīng)標(biāo)準(zhǔn) | EN 10269-2013
規(guī)定高溫和/或低溫性能的緊固件用鋼和鎳合金 Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties |
歸類(lèi) | 碳鋼 |
標(biāo)簽 | 調(diào)質(zhì)型鋼 |
密度 | 7.85 g/cm3 |
Material designation | Heat treatment condition | Diameter d/mm | Minimum impact energy KV2inJ(ISO-V test piece) at a test temperature in°C of: | ||||||||||||||||
Name | Number | -270 | -196 | -160 | -140 | -120 | -110 | -100 | -90 | -80 | -70 | -60 | -50 | -40 | -20 | 0 | +20 | ||
20MnB4 | 1.5525 | +QT | d≤16 | 27 | 40 | 40 | 40 |
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