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440C 不锈钢出口海运 | |||||
作者:佚名 国际海运来源:本站原创 点击数: 更新时间:2016/5/9 | |||||
440C 不锈钢 · S44004
Type Analysis /化学成份 Carbon 碳 0.95 to 1.2 % Manganese (Max)锰(不超过) 1.0 % Phosphorus (Max)磷(不超过) 0.0400 % Sulfur (Max)硫(不超过) 0.0300 % Silicon (Max)硅(不超过) 1.0 % Chromium 铬 16.0 to 18.0 % Molybdenum (Max)钼(不超过) 0.75 % Iron 铁 Balance余量
Description/描述 Stainless Type 440C is a high-carbon chromium steel designed to provide stainless properties with maximum hardness. It has been used primarily as a bearing steel, and is used in the hardened plus tempered condition. When heat-treated, Type 440C attains the highest hardness of any stainless steel (about Rockwell C 60). 440C含碳量高,具有不锈性能和最高的硬度。首选用途是轴承制造,是硬化加上回火状态。当热处理后,440C具有所有不锈钢中最高的硬度(约HRC60) Applications/用途 This stainless steel principally has been used in bearing assemblies, including bearing balls and races. In addition, it should be considered for cutlery, needle valves, ball check valves, valve seats, pump parts, ball studs, bushings, and wear-resistant textile components. 首选应用是轴承结构,包括滚珠和轴套。还有,它也能用来做刀具、针形阀、球型止回阀、阀门基座、泵零件、球头螺栓、轴套、抗磨损纺织机械。 Elevated Temperature Use/高温下的使用 Stainless Type 440C is not usually recommended for elevated temperature applications since corrosion resistance is reduced when used in the annealed condition or hardened and tempered above about 800ºF (427ºC). 通常不推荐440C用于高温环境,因为在退火或在约800ºF (427ºC)以上做硬化和回火状态下,它的抗腐蚀性能下降。
Stainless Type 440C resists corrosion in normal domestic environments and very mild industrial environments, including many petroleum products and organic materials. 440C能抵抗常规环境及温和的工业环境下的腐蚀,包括许多石油产品和有机物质。
Important Note: The following 5-level rating scale is intended for comparative purposes only. Corrosion testing is recommended; factors which affect corrosion resistance include temperature, concentration, pH, impurities, aeration, velocity, crevices, deposits, metallurgical condition, stress, surface finish and dissimilar metal contact. 重要提示:以下5种酸性环境只用于比较,需做腐蚀测试;影响抗腐蚀性能的因素有温度、浓度、酸碱度、杂质、通风、速率、裂缝、沉淀物、冶炼状态、应力、表面处理和不同金属的接触等等。 Nitric Acid 硝酸 Moderate 中等 Sulfuric Acid 硫酸 Restricted限制 Phosphoric Acid 磷酸 Restricted 限制 Acetic Acid 醋酸 Restricted限制 Sodium Hydroxide 氢氧化钠 Moderate 中等 Salt Spray (NaCl) 氯化钠
Restricted限制 【华 北】 北京市 天津市 河北省 山西省 内蒙古自治区 |
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