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个人中心收藏查看我的收藏0有用+10播报讨论上传视频合金结构钢，具有高温热强性能是一种合金结构钢，其特点在于热强性能较高，在500℃及550℃下长时间保温仍能保持良好的塑性和组织稳定性。该钢种适用于535℃以下的汽轮机整锻转子、叶轮及525℃以下的紧固件、套筒等高温部件，但存在浇铸及锻造工艺性能较差的问题，易出现表面开裂和裂纹 [1]。此外，可通过热轧或锻制工艺加工为棒材、圆钢等冶金钢材，规格范围覆盖20mm至Φ350mm，质量等级为A级 [2]。抗拉强度637MPa [1]
屈服强度490MPa [1]
工艺类别热轧/锻制 [2]
用途类别优特钢 [2]
质量等级A级 [2]
供货形态棒材、板材 [2]

目录
1物理性能2化学成分3应用领域4工艺特性
物理性能
播报编辑在常温下的力学性能表现稳定，具体包括：1.抗拉强度：637MPa；2.屈服强度：490MPa；3.塑性指标：伸长率16%（部分规格14%）、断面收缩率40%（部分规格35%）；4.韧性指标：冲击韧性值49J/cm²（部分规格39J/cm²） [1]。
化学成分
播报编辑其化学成分范围为：碳（C）：0.22%～0.32%；硅（Si）：0.30%～0.50%；锰（Mn）：0.50%～0.80%；铬（Cr）：1.50%～1.80%；钼（Mo）：0.60%～0.80%；钒（V）：0.20%～0.30%；硫（S）：≤0.018%；磷（P）：≤0.015%；其他元素（镍、铜等）含量均低于0.30% [1]。
应用领域
播报编辑主要用于制造以下高温部件：1.能源领域：汽轮机整锻转子、叶轮；2.机械领域：紧固件、套筒、主汽阀活塞环；3.加工材料：棒材及圆钢，可满足不同规格需求 [1-2]。
工艺特性
播报编辑该钢材的工艺性能存在以下特点：1.氮化处理适用性：可通过氮化处理提升表面性能；2.加工缺陷：锻造时易产生裂纹，浇铸过程中表面易开裂 [1]；3.规格范围：产品直径或厚度覆盖20mm至350mm [2]。新手上路成长任务编辑入门编辑规则本人编辑我有疑问内容质疑在线客服官方贴吧意见反馈投诉建议举报不良信息未通过词条申诉投诉侵权信息封禁查询与解封©2025 Baidu 使用百度前必读 | 百科协议 | 隐私政策 | 百度百科合作平台 | 京ICP证030173号 京公网安备11000002000001号window.PAGE_DATA= 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27Cr2MoV 27Cr2MoV热强性能较高，在500℃及550℃下长时间保温仍有良好的塑性，组织稳定性较好，室温冲击值变化很小。特性及适用范围27Cr2MoV热强性能较高，在500℃及550℃下长时间保温仍有良好的塑性，组织稳定性较好，室温冲击值变化很小。27Cr2MoV浇铸及锻造工艺性能较差，表面易开裂，锻造易出现裂纹。可进行氮化处理。27Cr2MoV用作535℃以下的汽轮机整锻转子和叶轮，也可用作525℃以下工作的紧固件、套筒、主汽阀活塞环。化学成份碳 C：0.22～0.32硅 Si：0.30～0.50锰 Mn：0.50～0.80硫 S：≤0.018磷 P：≤0.015铬 Cr：1.50～1.80镍 Ni：≤0.30铜 Cu：≤0.20钒 V：0.20～0.30钼 Mo：0.60～0.80力学性能抗拉强度 σb(MPa)：637屈服强度 σs(MPa)：490伸长率 δ5(%)：1)16;2)14断面收缩率 ψ(%)：1)40;2)35冲击韧性值 αkv(Jcm2)：1)49;2)39试样尺寸：取样部位：1)轴端纵向;2)本体径