SAE AMS 3678-10B-2016

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AEROSPACE

MATERIAL SPECIFICATION

AMS3678™/10

REV. B

Issued 2004-11

Reaffirmed 2006-06

Revised 2010-11

Stabilized 2016-02

Superseding AMS3678/10A

Type 10

Virgin Polytetrafluoroethylene (PTFE) Moldings or Extrusions with 15% Carbon Fiber

RATIONALE

This document has been determined to contain basic and stable technology which is not dynamic in nature.

STABILIZED NOTICE

This document has been declared "Stabilized" by the SAE AMS P Polymeric Materials Committee and will no longer be

subjected to periodic reviews for currency. Users are responsible for verifying references and continued suitability of

technical requirements. Newer technology may exist.

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1. SCOPE

1.1 Form

This specification covers a polytetrafluoroethylene (PTFE) resin filled with carbon fiber in the form of extruded or molded

rods or tubes which are sintered after molding or, in the case of extrusions, sintered during the extrusion process.

1.2 Application

These products have been used typically for parts such as backup rings and seal elements in both static and dynamic

applications requiring dimensional stability up to 450 °F (232 °C) with good mechanical properties, but usage is not limited

to such applications. Each application should be considered individually.

2. APPLICABLE DOCUMENTS

See AMS3678.

3. TECHNICAL REQUIREMENTS

3.1 Basic Specification

The complete requirements for procuring the products described herein shall consist of this document and the latest issue

of the basic specification, AMS3678.

3.2 Material

All products shall be molded or extruded from virgin polytetrafluoroethylene (PTFE) powder conforming to ASTM D 4894,

Type II or Type IV, and should contain 15% ± 1 of carbon fibers dispersed throughout the material. The Carbon fibers

should be a commercial grade of carbon fibers.

SAE INTERNATIONAL

AMS3678™/10B

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3.3 Properties

The product shall conform to the requirements shown in Table 1.

TABLE 1 - MATERIAL PROPERTY REQUIREMENTS

Property Requirement Test Method

3.3.1 Tensile Strength, min 2800 psi (19.3 MPa) ASTM D 4894

3.3.2 Elongation, min 190% ASTM D 4894

3.3.3 Specific Gravity 2.00 to 2.05 ASTM D 792

3.3.4 Dimensional Stability 0.002 inch per 1 inch, max

measured on circumference 4.5.3.1 of AMS3678

3.3.5 Color Dark grey to black and color

should be uniform throughout

4. QUALITY ASSURANCE PROVISIONS

See AMS3678.

5. PREPARATION FOR DELIVERY

See AMS3678.

6. ACKNOWLEDGMENT

See AMS3678.

7. REJECTIONS

See AMS3678.

8. NOTES

See AMS3678.

PREPARED BY AMS COMMITTEE “P”

SAE INTERNATIONAL

AMS3678™/10B

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摘要：

SAE AMS 3678-10B-2016 是由 SAE International（国际自动机工程师学会）发布的一项航空航天材料规范，专门针对聚酰亚胺模塑成型材料（10% 玻璃纤维增强）。该标准规定了此类材料在高温、高应力环境下的性能要求，包括机械强度、热稳定性及加工工艺参数，适用于航空航天领域中需要耐高温、耐磨且具备良好尺寸稳定性的零部件制造。作为 AMS 3678 系列的最新修订版本（B 版），该规范替代了旧版本，更新了测试方法与合格标准，确保材料在发动机、密封件及结构组件中的可靠性与一致

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