分类： 金属材料

{“meta”:{“title”:”【440C不锈钢】CNC加工性能参数 – 制造测试验证”,”description”:”440C不锈钢CNC加工性能中等，适合三轴/五轴加工”,”keywords”:”440C不锈钢,不锈钢,CNC加工,三轴,五轴,切削参数”},”material_name”:”440C不锈钢”,”category_id”:”7″,”category_name”:”金属材料”,”grade_standard”:”ASTM A276″,”foreign_equivalent”:”GB 9Cr18″,”material_type”:”不锈钢”,”density”:”7.75 g/cm³”,”chemical_composition”:{“C”:”0.95-1.20%”,”Mn”:”<1.00%","Si":"<1.00%","Cr":"16.00-18.00%","Mo":"<0.75%"},"physical_properties":{"hardness":"250-300 HB（退火）","thermal_conductivity":"24.0 W/m·K","specific_heat":"460 J/kg·K","thermal_expansion":"10.0×10⁻⁶/°C"},"mechanical_properties":{"tensile_strength":"700-900 MPa","yield_strength":"400-600 MPa","elongation":"10-15%","reduction_of_area":"30-40%","impact_strength":"≥20 J/cm²"},"cnc_process_character":"中等","3axis_5axis_adapt":"适合","deformation_risk":"低","stickiness":"否","machining_notes":"440C不锈钢是高碳马氏体不锈钢，硬度高，耐磨性好，加工难度较大","cutting_parameters":{"turning":{"speed":"40-80 m/min","feed":"0.05-0.08 mm/rev","depth":"0.8-1.5 mm"},"milling":{"speed":"30-60 m/min","feed":"0.05-0.08 mm/z","depth":"1-2 mm"},"drilling":{"speed":"30-50 m/min","feed":"0.04-0.06 mm/rev","depth":"通孔"},"tapping":{"speed":"8-15 m/min","tap_size":"M3-M8"}},"tool_recommend":{"turning":"硬质合金","milling":"硬质合金立铣刀","drilling":"硬质合金钻头"},"coolant_recommend":"极压乳化液或合成切削液","heat_treatment":["退火","淬火","回火"],"surface_treatment":["抛光","发黑"],"suitable_application":["刀具","轴承","阀门","精密零件"],"not_suitable":["焊接","高温场合"],"material_features":["硬度高","耐磨性好","耐腐蚀性好","可热处理"],"faq":[{"q":"440C不锈钢适合CNC加工吗？","a":"440C不锈钢的CNC加工性能为中等，适合三轴/五轴加工。"},{"q":"440C不锈钢是什么材料？","a":"440C不锈钢是高碳马氏体不锈钢，具有良好的耐磨性。"},{"q":"440C不锈钢主要用于什么场合？","a":"主要用于刀具、轴承、阀门和精密零件等。"},{"q":"440C不锈钢和304不锈钢有什么区别？","a":"440C硬度更高且更耐磨，304耐腐蚀性更好且更易加工。"},{"q":"440C不锈钢加工时需要注意什么？","a":"使用硬质合金刀具，控制切削温度，避免加工硬化。"}],"cta":"如需了解440C不锈钢的CNC加工报价或工艺咨询，请联系智制工坊技术团队。","internal_links":{"related_materials":["420不锈钢","D2模具钢"],"related_process":["抛光"]}}