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18Cr2Ni4WA屬于高強度中合金滲碳鋼。要使C化物及奧氏體含量不超標可采用滲碳后高溫回火900~920℃滲碳，600~650回火，深冷處理，油淬后的硬度也就是48左右，想要達到HRC58-63，必須要進行表面滲碳。
18Cr2Ni4WA鋼常用合金滲碳鋼,強度，韌性高，淬透性良好，也可在不滲碳而調質的情況下使用，一般用做截面較大，載荷較高且韌性良好，缺口敏感性低的重要零件。18Cr2Ni4WA belongs to high strength medium alloy carburizing steel. To make C materialized and austenite content does not exceed the standard can adopt carburizing after high temperature tempering 900~920 DEG C carburizing, 600-650 tempering, cryogenic treatment, after oil quenching hardness also is 48%, want to achieve HRC58-63, must to the carburizing surface.
18Cr2Ni4WA Steel commonly used alloy carburizing steel, strength, high toughness, quenching of good, also can be in carburization and quenching and tempering, the general use of do larger sections and higher load and good toughness and low notch sensitivity of important parts.18Cr2Ni4WA屬于高強度中合金滲碳鋼。要使C化物及奧氏體含量不超標可采用滲碳后高溫回火900~920℃滲碳，600~650回火，深冷處理，油淬后的硬度也就是48左右，想要達到HRC58-63，必須要進行表面滲碳。
18Cr2Ni4WA鋼常用合金滲碳鋼,強度,韌性高,淬透性良好,也可在不滲碳而調質的情況下使用,一般用做截面較大,載荷較高且韌性良好,缺口敏感性低的重要零件。
化學成份
碳 C ：0.13～0.19
硅 Si：0.17～0.37
錳 Mn：0.30～0.60
硫 S ：允許殘余含量≤0.025
磷 P ：允許殘余含量≤0.025
鉻 Cr：1.35～1.65
鎳 Ni：4.00～4.50
銅 Cu：允許殘余含量≤0.025
鎢 W ：0.80～1.20

18Cr2Ni4WA belongs to high strength medium alloy carburizing steel. To make C materialized and austenite content does not exceed the standard can adopt carburizing after high temperature tempering 900~920 DEG C carburizing, 600-650 tempering, cryogenic treatment, after oil quenching hardness also is 48%, want to achieve HRC58-63, must to the carburizing surface.
18Cr2Ni4WA Steel commonly used alloy carburizing steel, strength, high toughness, quenching of good, also can be in carburization and quenching and tempering, the general use of do larger sections and higher load and good toughness and low notch sensitivity of important parts.
chemical composition
Carbon:0.13 C ~ 0.19
Silicon Si:0.17 ~ 0.37
Mn Mn:0.30 ~ 0.60
S: allow residual sulfur content less than 0.025
P P: allow residual content less than 0.025
Chrome Cr:1.35 ~ 1.65
Ni Ni:4.00 ~ 4.50
Cu: allow residual copper content is less than 0.025
Tungsten:0.80 W ~ 1.20