1.1 本规范涵盖6级混合燃料 % 至20 % 剩余部分为轻质中间馏分或中间馏分柴油燃料（统称为B6至B20）。这些等级适用于各种类型的柴油发动机。 1.1.1 混合物中的生物柴油成分应符合规范要求 D6751 对于B6-B20 S15级，生物柴油组分应为 D6751 S15 LM，除非根据 6.1.1.1 用于未采用选择性催化还原（SCR）或柴油颗粒过滤器（DPF）后处理技术的柴油发动机中使用的S15燃料。剩余燃料应为符合规范的轻质中等或中等馏分柴油 D975 除以下例外情况外，任何硫含量的1-D和2-D级。 含硫量、芳香族含量、十六烷值或润滑性超出规范范围的轻质中级或中级馏分柴油 D975 可与符合规格的生物柴油混合 D6751 ，前提是成品混合物符合本规范。 1.1.2 燃料硫等级描述如下: 1.1.2.1 B6至B20 S15级-- 最大15的燃油 ppm硫。 1.1.2.2 B6至B20 S500级-- 最大500的燃料 ppm硫。 1.1.2.3 B6至B20 S5000级-- 最高5000的燃料 ppm硫。 1.2 本规范规定了B6至B20生物柴油混合物在交付时间和地点所需的性能。当买方和供应商之间达成协议时，规范要求可应用于生产和分销系统的其他点。 1.2.1 本规范中的任何内容均不得妨碍遵守可能更具限制性的联邦、州或地方法规。 注1: 静电的产生和消散会在蒸馏柴油燃料油的处理中产生问题。有关此主题的详细信息，请参阅指南 D4865 。 1.3 以国际单位制表示的数值应视为标准。本标准中不包括其他计量单位。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。

1.1 This specification covers fuel blend grades of 6 % to 20 % by volume biodiesel with the remainder being a light middle or middle distillate diesel fuel, collectively designated as B6 to B20. These grades are suitable for various types of diesel engines. 1.1.1 The biodiesel component of the blend shall conform to the requirements of Specification D6751 . For grade B6-B20 S15 the biodiesel component shall be grade D6751 S15 LM, except as allowed under 6.1.1.1 for S15 fuels used in diesel engines without Selective Catalytic Reduction (SCR) or Diesel Particulate Filter (DPF) aftertreatment technology. The remainder of the fuel shall be a light middle or middle distillate grade diesel fuel conforming to Specification D975 grades No. 1-D and No. 2-D of any sulfur level specified with the following exceptions. The light middle or middle distillate grade diesel fuel whose sulfur level, aromatic level, cetane, or lubricity falls outside of Specification D975 may be blended with biodiesel meeting Specification D6751 , provided the finished mixtures meets this specification. 1.1.2 The fuel sulfur grades are described as follows: 1.1.2.1 Grade B6 to B20 S15— A fuel with a maximum of 15 ppm sulfur. 1.1.2.2 Grade B6 to B20 S500— A fuel with a maximum of 500 ppm sulfur. 1.1.2.3 Grade B6 to B20 S5000— A fuel with a maximum of 5000 ppm sulfur. 1.2 This specification prescribes the required properties of B6 to B20 biodiesel blends at the time and place of delivery. The specification requirements may be applied at other points in the production and distribution system when provided by agreement between the purchaser and the supplier. 1.2.1 Nothing in this specification shall preclude observance of federal, state, or local regulations that may be more restrictive. Note 1: The generation and dissipation of static electricity can create problems in the handling of distillate diesel fuel oils. For more information on this subject, see Guide D4865 . 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.