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MIL-STD-2175 Revision A:1993

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

CASTING, CLASSIFICATION AND INSPECTION OF
Available format(s)

PDF

Superseded date

07-01-1998

1. SCOPE
1.1 Purpose
1.2 Applicability
1.2.1 Casting methods
1.2.2 Casting alloys
1.3 Classification
1.3.1 Classes
1.3.2 Grades
2. APPLICABLE DOCUMENTS
2.1 Government documents
2.1.1 Specifications and standards
2.2 Non-Government publications
2.3 Order of precedence
3. DEFINITIONS
3.1 Alloy
3.2 Casting
3.3 Chaplet
3.4 Cold shut
3.5 Contracting agency
3.6 Defect
3.7 Diffraction
3.8 Discontinuity
3.9 Foreign material
3.10 Gas holes
3.11 Gas porosity
3.12 Hot tear
3.13 Inclusions
3.14 Insert
3.15 Misruns
3.16 Penetrameter or image quality indicator (IQI)
3.17 Radiographic quality level
3.18 Segregation
3.19 Shrinkage
3.20 Shrinkage cavity
3.21 Surface irregularities
3.22 Visual inspection
4. GENERAL REQUIREMENTS
4.1 Personnel qualification
4.2 Inspection sequence
4.3 Discontinuity removal
4.4 Classification of castings
4.4.1 Determination of classes and grades
4.4.2 Class 1 casting requirements
4.5 Inspection lot
5. DETAIL REQUIREMENTS
5.1 Outline of inspections
5.1.1 Visual inspection
5.1.2 Magnetic particle and liquid penetrant
         inspection
5.1.3 Radiographic inspection
5.2 Sampling
5.2.1 Visual inspection
5.2.2 Magnetic particle and liquid penetrant
         inspection
5.2.3 Radiographic inspection
5.3 Inspection methods and acceptance criteria
5.3.1 Visual inspection
5.3.1.1 Surface roughness
5.3.1.2 Gate, riser and parting line projections
5.3.1.3 Surface pits and raised metal
5.3.2 Magnetic particle and liquid penetrant
         inspection
5.3.2.1 Inspection method for ferromagnetic materials
5.3.2.2 Inspection method for non-ferromagnetic
           materials
5.3.2.3 Magnetic particle and liquid penetrant
           acceptance criteria
5.3.3 Radiographic inspection
5.3.3.1 Radiographic inspection method
5.3.3.2 Radiographic reference standards
5.3.3.3 Radiographic acceptance criteria
5.4 Re-inspection
5.4.1 Re-inspection of rejected lots
5.4.2 Individual casting rejection
6. NOTES
6.1 Intended use
6.2 Issue of DoDISS
6.3 Data requirements
6.4 Sampling
6.5 Cross-reference
6.6 Radiographic quality grades for machined
6.7 Producibility considerations
6.8 Observational standards
6.9 Ultrasonic inspection of thick castings
6.10 Subject term (key word) listing
6.11 Changes from previous issue
TABLE
1. Sampling, radiographic inspection of class 2
     castings and magnetic particle and liquid penetrant
     inspection of class 4 castings
2. Sampling, radiographic inspection of class 3
     castings
3. Maximum allowable gate, riser and parting line
     projections
4. Maximum permissible discontinuity size and
     distribution (in inches) for magnetic particle (MT)
     and liquid penetrant (PT) inspection
5. Notes for tables 6 though 14
6. Maximum permissible radiographic severity levels
     for discontinuities in aluminium castings per
     ASTM E 155
7. Maximum permissible radiographic severity levels
     for discontinuities in magnesium castings per
     ASTM E 155
8. Maximum permissible radiographic severity levels
     for discontinuities in investment steel castings
     1 inch wall or less per ASTM E 192
9. Maximum permissible radiographic severity levels
     for discontinuities in heavy walled steel castings
     2-4.5 inch per ASTM E 186
10. Maximum permissible radiographic severity levels
     for discontinuities in steel castings up to 2 inch
     in thickness per ASTM E 446
11. Maximum permissible radiographic severity levels
     for discontinuities in heavy walled 4.5-12 inch
     steel castings per ASTM E 280
12. Maximum permissible radiographic severity levels
     for discontinuities in high strength copper-base
     and nickel-copper alloy castings up to 2 inch
     in thickness per ASTM E 272
13. Maximum permissible radiographic severity levels
     for discontinuities in high-strength copper-base
     and nickel-copper alloy castings 2 - 6 inch in
     thickness per ASTM E 272
14. Maximum permissible radiographic severity levels
     for discontinuities in tin bronze castings up to
     2 inch in thickness per ASTM E 310
Appendix
A. Test report technical content requirements

Defines requirements for classification and inspection of ferrous and non-ferrous raw metal castings.

Committee
AREA NDTI
DocumentType
Standard
Pages
35
PublisherName
US Military Specs/Standards/Handbooks
Status
Superseded
Supersedes

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