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ASTM C449 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

CEMENT,INSULATION,HIGH TEMPERATU. Key specifications include material: MINERAL FIBER BASIC, special_features: MINERAL FIBER, maximum_thermal_conductivity: 0.95 BTU-IN/HR-FT2 AT 75 DEGREES FAHRENHEIT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5640-00-226-4540, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
ASTM C449
NSN: 5640-00-226-4540
FSC: 5640
CAGE: 81346 — AMERICAN SOCIETY FOR TESTING AND MATERIALS DBA ASTM INTERNATIONAL (USA)
SPECIFICATIONS
materialMINERAL FIBER BASIC
special_featuresMINERAL FIBER
maximum_thermal_conductivity0.95 BTU-IN/HR-FT2 AT 75 DEGREES FAHRENHEIT
NSN5640-00-226-4540
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CEMENT,INSULATION,HIGH TEMPERATU TITLE COMPONENT PN ASTM C449 MFR CEMENT,INSULATION,HIGH
KEY FEATURES
•
MATERIAL: MINERAL FIBER BASIC
•
MAXIMUM THERMAL CONDUCTIVITY: 0.95 BTU-IN/HR-FT2 AT 75 DEGREES FAHRENHEIT
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALMINERAL FIBER BASIC
SPECIAL FEATURESMINERAL FIBER
MAXIMUM THERMAL CONDUCTIVITY0.95 BTU-IN/HR-FT2 AT 75 DEGREES FAHRENHEIT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
C449Interchangeable
interchangeable cross-reference
interchangeable
40166Interchangeable
interchangeable cross-reference
interchangeable
648690Interchangeable
interchangeable cross-reference
interchangeable
51C544Interchangeable
interchangeable cross-reference
interchangeable
1448Interchangeable
interchangeable cross-reference
interchangeable
A507Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ASTM C449?
ASTM C449 is a CEMENT,INSULATION,HIGH TEMPERATU.
What parts can replace ASTM C449?
There are 10 known substitutes for ASTM C449: C449, 40166, 648690 and 7 more. Substitute compatibility should be verified for your specific system.
Is ASTM C449 still available?
ASTM C449 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026