SAE AS1895F-2024
Coupling Assembly, V-Retainer, High Pressure High Temperature, Pneumatic Tube

Standard No.

SAE AS1895F-2024

Release Date

2024

Published By

Society of Automotive Engineers (SAE)

Latest

SAE AS1895F-2024

Introduction

Standard Evolution and Technical Background

AS1895 has been revised six times since its first publication in 1985. The main updates of the 2024 F edition include:

• Removal of QPL certification for 6.50-7.50 inch standard profile
• Added AMS5737 nut material specification
• Bolt strength increased to a minimum requirement of 160 ksi

---

Comparison of core performance indicators

0.005-0.026

Parameters	Type I standard type	Type II low profile type
Applicable pipe diameter (inches)
Working Pressure (psi)	385-1960	280-2070
Bending Moment (lb-in)	3310-38020	1110-26790
Flange Flatness (FIM)	0.005-0.020	0.005-0.026

---

Key Material Specifications

Seal Assembly Example

AS1895/7 standard seals at 1200°F must meet the following requirements:

• No plating peeling for 1000 hours
• Leakage rate ≤0.01 SCFM/inch pipe diameter
• Tested to 200,000 pressure cycles

---

Certification Test Matrix

Test Items	Method Section	Judgment Criteria
Static Pressure Test	4.5.1	Expansion ≤0.017"(Type I)
Vibration Test	4.5.4	5-2000Hz frequency sweep
Torque test	4.5.3	See Table 5 limits

---

Implementation recommendations

1. Material selection: Nickel-based alloy 718/625 pipes are preferred. Non-stabilized corrosion-resistant alloys are prohibited.
2. Welding control: The flatness of the flange after welding must meet the classification requirements of Clause 3.3.5.1.
3. Safety lock verification: Components larger than 5 inches must be tested for anti-misinstallation.
4. Temperature compensation: Load values must be corrected according to Table 3 for high temperature conditions.