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18MnMoNi5-5簡介

牌號 18MnMoNi5-5
歐標鋼號 1.6308
對應(yīng)標準 EN 10222-2-2017
壓力用途用鋼制鍛件 第2部分 具有高溫特性的鐵素體和馬氏體鋼
Steel Forgings for Pressure Purposes. Part 2:Ferritic and Martensitic Steels with Specified Elevated Temperature Properties
歸類 合金鋼
18MnMoNi5-5 化學(xué)元素成分含量(%)
成分 C Si Mn P S Ni Mo V
最小值 - - 1.15 - - 0.5 0.45 -
最大值 0.2 0.4 1.55 0.025 0.01 0.8 0.55 0.03
碳當量計算
18MnMoNi5-5 機械性能
厚度
t
mm		 抗拉強度
σb
Mpa 		屈服點
σs
Mpa 		斷后伸長率或延伸率
δ
% 		沖擊吸收能量
KV2
J
t≤200 550~670 ≥400 ≥20 I：≥56，tr/t：≥40
① I = longitudinal to main forging directions；tr = transverse to main forging directions；t = tangential.
② Maximum room temperature for the impact test is 20 °C. By option, impact testing may be carried out at 0°C, with the condition to fulfil the impact values as stated in this table.
③ Until the yield point criteria are harmonized in the various national codes, determination of ReH may be replaced by determination of Rp0.2. In this case Rp0.2 values are 10 MPa lower for ReH values up to 355 MPa and 15 MPa lower for ReH values greater than 355 MPa.

  • 熱處理制度（僅供參考）

    QT= quenched and tempered. a = air; f = furnaced; w = water or water based medium.

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