NBSIR 73-103

Stress Corrosion Behavior of High

Strength Corrosion Resistant Materials

E. Escatante and W. F. Gerhold

Corrosion Section

National Bureau of Standards

Washington, D. C. 20234

February 7, 1973

Prepared for

Materials Division

Naval Air Systems CommandDepartment of the Navy

NBSIR 73-103

STRESS CORROSION BEHAVIOR OF HIGH

STRENGTH CORROSION RESISTANT MATERIALS

E. Escalante and W. F. Gerhold

Corrosion Section

Metallurgy Division

February 7, 1973

Prepared for

Materials Division

Naval Air Systems Command

Department of the Navy

U. S. DEPARTMENT OF COMMERCE, Frederick B. Dent, Secretary

NATIONAL BUREAU OF STANDARDS, Richard W. Roberts, Director

Progress Report

on

Stress Corrosion Behavior of High StrengthCorrosion Resistant Materials

E. Escalante and W. F. GerholdCorrosion Section

Metallurgy Division

Results to date in the investigation of the stress -corrosion behaviorof high strength corrosion resistant materials (authorized under RRMA 2007)are included herein.

The materials that are being studied in this investigation includethe following:

Alloy Steels

PH 14-4 Mo, "C "-ringsPH 14-8 Mo, sheet17-4 PH, sheet17-4 PH, forgingPH 15-7 Mo, sheetAM 350, sheetAM 355, sheetAM 355, wireAM 357, sheet17-7 PH, sheet17-7 PH, wireThermenol , sheetA 286, sheetHNM, sheet17 Cr-5 Ni, foilCustom 450Custom 455

Titanium Alloys

6 A1-4VC105 VAA110 ATCI 15 VAB120 VCA

The tests are being conducted in the marine atmosphere at the SO' and

800' lots at Kure Beach, North Carolina. Table 1 and Table 2 contain the

results obtained from tests conducted at the 80' and the 800' lots, respec-

tively.

These tests are continuing.

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U.S. DEPT. OF COMM. I 1. PUBLICATION OR REPORT NO. 2. Gov't AccessionBIBLIOGRAPHIC DATA

j NBSIR 73-103N°'

3. Recipient's Accession No.

4. TITLE AND SUBTITLE

Progress Report on Stress Corrosion Behavior of HighStrength Corrosion Resistant Materials

5. Publication Date

January

6. Performing Organization Code

7. AUTHOR(S) _ _ . , „. _ _ i . ,E. Escalante and W. F. Gerhold

8. Performing Organ i/.mon

9. PERFORMING ORGANIZATION NAME AND ADDRESS

NATIONAL BUREAU OF STANDARDSUtrAKlMtlNl Ur LL/MMllK^E.WASHINGTON, D.C. 20234

10. Hro|cct/T.isk/Work Unit No.

3120410

11. Contract/Grant No.

12. Sponsoring Organization Name and Address

Materials DivisionNaval Air Systems CommandDepartment of the Navy

13. Type of Report Si PeriodCovered

14. Sponsoring Agency Code

15. SUPPLEMENTARY NOTES

16. ABSTRACT (A 200-word or less factual summary of most significant information. If document includes a significantbibliography or literature survey, mention it here.)

This report contains results to date in the investigation of the stress-corrosionbehavior of high strength, corrosion-resistant materials exposed to marineenvironments. These materials are high strength alloy steels and titanium alloysin the form of c-rings, wire, sheet, forgings, and foil. The investigation is stillin progress.

17. KEY WORDS (Alphabetical order, separated by semicolons) Alloy Steels; high Strength materialsmarine environment; stress .corrosion; titanium alloys.

18. AVAILABILITY STATEMENT

UNLIMITED.

1x1 FOR OFFICIAL DISTRIBUTION. DO NOT RELEASETO NTIS.

19. SECURITY CLASS(THIS REPORT)

UNCL ASSIFIED

20. SECURITY CLASS(THIS PAGE)

21. NO. OF PAGES

14

22. Price

UNCLASSIFIED

USCOMM-OC 6