ASTM G74-13
采用气态流体冲击的非金属材料和部件着火敏感度的标准试验方法
Standard Test Method for Ignition Sensitivity of Nonmetallic Materials and Components by Gaseous Fluid Impact
ASTM G74-13 发布历史
ASTM G74-13由美国材料与试验协会 US-ASTM 发布于 2013。
ASTM G74-13 在中国标准分类中归属于: H21 金属物理性能试验方法。
ASTM G74-13 发布之时，引用了标准
- ASTM D2463 吹模制热塑性塑料容器耐跌落冲击性的标准试验方法
- ASTM D3182 橡胶的标准规程.混合标准化合物和制备标准硫化薄板用材料、设备和方法
- ASTM D3183 橡胶标准操作规程&x2014；从产品中制备用于试验目的的试件
- ASTM D4894 聚四氟乙烯(PTFE)粒状模制材料和冲压挤制材料标准规范
- ASTM D618 试验用调节塑料的标准实施规程
- ASTM G128 控制氧浓缩系统危害的标准导则
- ASTM G14 管道涂层抗冲击性的标准试验方法（落锤试验）
- ASTM G175 用于医疗和紧急应用的氧气压力调节器的点火灵敏度和容错性评估的标准试验方法
- ASTM G63 供氧设备用非金属材料的评定的标准指南
- ASTM G88 氧气设备系统设计的标准指南
- ASTM G93 富氧环境用材料和设备的清洁处理方法
- ASTM G94 氧气设备用金属评估的标准指南
- ISO 10297 气瓶.气瓶阀.规范和型式试验;修改件1:压力桶和管
- ISO 10524-1 用于医用气体的压力调节器 第1部分：压力调节器和带有流量计量装置的压力调节器 修正案 1
- ISO 10524-2 医用气体用压力调节器.第2部分:进气压力调节器和线性压力调节器
- ISO 10524-3 用于医疗气体的压力调节器 - 第3部分:与气缸阀（VIPR）集成的压力调节器
- ISO 14113 气焊设备. 450 bar (45 MPa) 以下工业气体传输用橡胶和塑料软管及其组件
- ISO 15001 麻醉和呼吸设备.与氧气的兼容性
- ISO 23529 橡胶.物理试验方法用试样制备和整修的一般规程
- ISO 291 塑料.调节和测试用标准大气
ASTM G74-13的历代版本如下：
- 2021年 ASTM G74-13(2021) 用气体流体冲击法测定非金属材料和部件点火灵敏度的标准试验方法
- 2013年 ASTM G74-13 采用气态流体冲击的非金属材料和部件着火敏感度的标准试验方法
- 2008年 ASTM G74-08 材料对气流冲击着火敏感度的标准试验方法
- 2001年 ASTM G74-01 材料对气流冲击着火敏感度的标准测试方法
- 1982年 ASTM G74-82(1996)e1 材料对气流冲击着火敏感度的标准测试方法
4.1 This test standard describes how to evaluate the relative sensitivity of materials and components to dynamic pressure impacts by various gaseous fluid media (can include gas mixtures).
4.2 Changes or variations in test specimen configurations, thickness, preparation, and cleanliness can cause a significant change in their impact ignition sensitivity/reaction. For material tests, the test specimen configuration shall be specified on the test report.
4.3 Changes or variation in the test system configuration from that specified herein may cause a significant change in the severity produced by a dynamic pressure surge of the gaseous media.
4.4 A reaction is indicated by an abrupt increase in test specimen temperature, by obvious changes in odor, color, or material appearance, or a combination thereof, as observed during post-test examinations. Odor alone is not considered positive evidence that a reaction has occurred. When an increase in test specimen temperature is observed, a test specimen reaction must be confirmed by visual inspection. To aid with visual inspection, magnification less than 10× can be used.
4.5 When testing components, the test article must be disassembled and the nonmetallic materials examined for evidence of ignition after completion of the specified pressure surge cycles.
4.6 Ignition or precursors to ignition for any test sample shall be considered a failure and are indicated by burning, material loss, scorching, or melting of a test material detected through direct visual means. Ignition is often indicated by consumption of the non-metallic material under test, whether as an individual material or within a component. Partial ignition can also occur, as shown in Fig. 3a, b, and c, and shall also be considered an ignition (failure) for the purpose of this test standard.
FIG. 3 a Untested PCTFE (10X Magnification) (Polychlorotrifluoroethylene) Sample. FIG. 3 b Untested Nylon (PA, polyamide) Valve Seat (10X magnification) (continued) Note 1—For the purpose of this standard, test samples that visually appear in these conditions, or similar, are considered to be representative of ignition.FIG. 3 c Untested Pin-Index Sealing Washer (10X magnification) (continued) FIG. 3 Photographs Representing Partial Reactions Including Scorching, Discoloration, Melting and Material Loss or Material Consumption. For the purpose of this standard, test samples that visually appear in these conditions, or similar, are considered to be representative of ignition.
- 标准号
- ASTM G74-13
- 发布
- 2013年
- 发布单位
- 美国材料与试验协会
- 替代标准
- ASTM G74-13(2021)
- 当前最新
- ASTM G74-13(2021)
- 引用标准
- ASTM D2463 ASTM D3182 ASTM D3183 ASTM D4894 ASTM D618 ASTM G128 ASTM G14 ASTM G175 ASTM G63 ASTM G88 ASTM G93 ASTM G94 ISO 10297 ISO 10524-1 ISO 10524-2 ISO 10524-3 ISO 14113 ISO 15001 ISO 23529 ISO 291 MIL-STD-1622