AS9100 Requirements: How Aerospace Quality differs from Automotive.

AS9100 Requirements: How Aerospace Quality Differs from Automotive

Problem Statement

Aerospace components face extreme environmental conditions, including temperature fluctuations from -65°C to 260°C, high-pressure cycles, and exposure to aggressive chemicals like hydraulic fluids. Traditional automotive-grade polymers often fail due to compression set, chemical degradation, or delamination under these conditions.

Material Science Analysis

Automotive polymers like EPDM and NBR lack the chemical resistance and thermal stability required for aerospace applications. FKM (Fluorocarbon Rubber) excels due to its high fluorine content (66-70%), which provides superior resistance to fuels, oils, and extreme temperatures. HNBR (Hydrogenated Nitrile Rubber) offers enhanced thermal stability and aging resistance, making it suitable for aerospace seals and gaskets.

Technical Specs

• FKM: Shore A Hardness 70-90, Tensile Strength 15-25 MPa, Elongation at Break 150-250%, Temperature Range -20°C to 260°C.
• HNBR: Shore A Hardness 60-90, Tensile Strength 20-30 MPa, Elongation at Break 200-400%, Temperature Range -40°C to 150°C.
• EPDM: Shore A Hardness 40-90, Tensile Strength 10-20 MPa, Elongation at Break 200-600%, Temperature Range -50°C to 150°C.

Material	Temperature Range (°C)	Compression Set (%)	Chemical Resistance
FKM	-20 to 260	15-25	Excellent
HNBR	-40 to 150	20-30	Good
EPDM	-50 to 150	25-35	Fair

Standard Compliance

RubberQ adheres to IATF 16949 standards for batch traceability and PPAP documentation. For aerospace applications, we comply with AS9100 requirements, ensuring rigorous material testing, process validation, and audit readiness. Our in-house compounding capabilities allow precise control over polymer ratios, fillers, and curing agents, meeting ASTM D2000 and ISO 3601 specifications.

CTA

For custom material compound development or IATF 16949 documentation, consult RubberQ’s engineering department.