This specification defines performance requirements for helmets used in nonmotorized recreational snow sports. The hot, cold, and wet helmets shall be subjected to the dynamic strength retention test. The ambient helmet shall be subjected to the positional stability (roll-off) test. Anvils to be used for impact tests in this specification are described as follows: flat anvil, hemispherical anvil, and edge anvil. All impacting shall be performed in accordance with the specified requirements.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

Scope

1.1 This specification defines performance requirements for helmets used in nonmotorized recreational snow sports (such as skiing, snowboarding, and other alpine sports). This specification is a performance standard and is not intended to restrict design. Although a helmet that meets this specification will help reduce the risk of some types of injuries to the head at slower speeds, the protection is limited. The user is responsible for participating in the sport within his/her abilities and the nature of the snow conditions which may vary widely. Compliance with the common sense rules of the sport's safety, including any applicable responsibility codes, is essential to help reduce the risk of personal injury.

1.2 All testing and requirements of this specification shall be in accordance with Test Methods F1446, except where noted herein.

1.3 Partial utilization of this specification is prohibited. Any statement of compliance with this specification shall be a certification that the product meets all of the requirements of the specification in its entirety. A product that fails to meet any one of the requirements of this specification is considered to have failed the standard and should not be sold with any indication that it meets parts of the 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.

Test Requirement 测试要求：

Impact Energy Attenuation 撞击能量吸收
Retention System Stability (static) 固定系统稳定性（静态） 　
Retention System Strength (dynamic) 固定系统强度（动态）

Sample Size 样品数量 / 送样规格: 5 pcs of completed products per headform size per model with instruction (if applicable) is recommended.  样品要求: 每款每种头形尺寸的头盔各5个,包括说明书(如适用). 
Lead Time / TAT (Turn Around Time) 测试周期: 常规服务 Regular service 7-9 working days

Report Summary 报告摘要: