Selection List Standard Fields (Header Information)

1
Selection List Standard Fields(Header
Information)
MTRL Code 5 digit number assigned to a specific
material Prefix odd for metals, even for
nonmetals Use Type Functional or design use
for material, i.e., adhesive, elastomer
etc. Designation Manufacturers nomencalture
for test material Composition Generic chemical
makeup of material, i.e., epoxy, acrylic, etc.
2
Selection List Standard Fields(Header
Information, Continued)
Generic ID Three alpha character pairs (6
characters) 1st pair Use Type 2nd pair
Primary Composition 3rd pair Minor
Composition Min F (K) Minimum service/operating
temperature from manufacturers literature Max
F (K) Maximum service/operating temperature
from manufacturers literature Specification De
signated when material is qualified to a
specification, can be multiple specs.
3
Selection List Standard Fields(Test Data
Information)
NHB/Type Number for specific test per
NASA-STD-6001 01 Upward Propagation 04
Wire Insulation Flammability 06 Odor 07
Offgossging 13 Mechanical Impact 17
Promoted Combustion, etc. Test NR Distinct
number assigned to each test series - Prefix
identifies test facility, e.g.M MSFC, W
WSTF Cure NR Number that correlates with cure
sequence in cure table
4
Selection List Standard Fields(Test Data
Information, Continued)
SMP NR Material Sample or specimen Number - 09
represents worst case record R Rating assigned
to each specific material test PCT OXY Percent
of oxygen in test chamber TEMP Test
temperature PRESS Pressure in test
chamber THK Thickness of material test
specimen Width Width of test material
sample Length Length of test material sample
5
Selection List Standard Fields(Test Data
Information, Continued)
Sample Wgt Mass of material test specimen Class
code Material classification code A
Material identification verified C Material
identification not verified Description D
Descriptive information about material
specimen Remark R Remark about test or
configuration of specimen Temp Temperature in
test chamber
6
Selection List Standard Fields(Test Data
Information, Continued)
Obsolete/Discontinued Identifies material that
are no longer produced by manufacturer Manufa
cturer/Supplier The manufacturer
and/or supplier of material Substrate
Material Identification of Material used as a
substrate, e.g., aluminum, fiberglass SUBSTR
THK Thickness of substrate material
Other fields exist that are specific to each test
type, i.e., flammability, offgassing, etc.
7
Selection List Data Base Data Verification

• Material Identification
• Assign Material Code
• Verify Manufacturers Designation
• Verify Use Type
• Verify Chemical Composition (Generic)
• Minimum/Maximum Service Temperature
• Establish Generic Identification Code
• Specification(s)

8
Selection List Data Base Data Verification

• Manufacturer Identification
• Verify Manufacturer, not Supplier
• Address, Telephone and Facsimile Number
• E-mail Address
• New Test Data Temporarily Held in Preliminary
  Data Bases
• Compare New Test Data with Historical Results
• Research Anomalies in Test Results
• Rating Criteria

9
Selection List Data Base Data Verification

• Initial Data Review
• Analyst Level
• Engineer/Analyst Level
• Final Review
• NASA/NAS/CSC Team
• Data Evaluated
• Data Consistency Verified
• Anomalies Resolved
• Decision Made to Move Data to Selection List or
  to Hold

10
Nonmetals Properties Data Base

• Current Version
• Source Manufacturers Literature
• Sparsely Populated
• Separate Data Base
• New Version
• Source Manufacturers Literature
• 10 15 Major Properties
• Selection List Data Base
• Adhesives 85 complete
• Also Working Lubricants, Coatings, Plastics,
  Elastomers, Potting Compounds, Fabric, Tape, Film

11
Metals Properties Data Base

• Source Material
• Mil-HDBK-5
• Aerospace Structural Metals Handbook
• Alloys
• Aluminum
• Steel
• Copper
• Nickel/Cobalt
• Titanium
• Magnesium
• Separate Data Base