AD-773 673 PLANE STRAIN FRACTURE …

1 AD-773 673 PLANE STRAIN FRACTURE toughness (KIC) DATA HANDBOOKFOR METALSARMY MATERIALS AND MECHANICS RESEARCH CENTERDECEMBER 1973 DISTRIBUTED S. KPMIUET t Uoo=II013-The findings in this report are not to be construed as an officialDepartment of the Army position, unless so designated by otherauthorized trad names or manufacturers in this reportshall not be construed as advertising nor as an officialHinosMent or approval of uich products or companies bvrtOe United States GovernmentDISPOSITION INSTRUCTIONSD estroy this report when it is no IoW neeedDO not return ft to the CLASSIFICATION OF THIS PAGE (10%mn Date Ent_ ___REPORT DOJMENTATION PAGE READ Is4 TRUCTIONSBEFORE COMPL -IMG T2. GOV ACCESSION NO. 3. RECIPIENY'S CATALOG NUMBER4. TITLE (nd Subittlo) S.)

2 TYPE Of REPORT & PERIOD COVER EdPLANE STRAINl FRACTURE toughness (KiC) DATA Final ReportHANDBOOK FOR METALS 1. 7 ERFORMING ORO. REPORT NUMBER7. AUTHOR(*) S. CONTRACT OR GRANT NUMBER(E)William T. Matthews f9. PERFOWAING ORSANIZATION NAME AND ADDRESS I*. PROGRAM ELEMENTrPROJECT, T?.SKAREA & WORK UNIT NUMBERSArmy Materials and Mechanics Resevrch Center )/A Project: 1T0621059349 Watertown, Mwassachusetts 02172 W Code: )M4R-TM ___ ency Accession: DA OB4707It. CONTROLLING OI'FICE NAME AND ADDRESS 12. REPORT DATEU. S. Army Materiel Command December 1973 Alexandria, Virginia 22304 IS. NUMBER OF PAGESI1. MONITORiNG AGENCY NAME & AUDOESS(;i differitt Ito. Confroline Office) IS. SECURITY CLASS. (of this toport) DWCLASSIF CATION/OOWNGWA OINGSCHEDULE16. OISTRIBUTION STATEMENT (of this Report)Approved for public release; distribution DIST0i8 UTION STATEMENT (of the abstract entered In Block 20.

3 It differsot hem R~pot)10. SUPPLEMENTARY NOTESIt. KeY WORDS (Ceithwpe on side ii ind Identify by block number) FRACTURE properties Tables (data)Thughness Experimental dataGriffith crack Static tests20. ASSTrIACT (Centhnwe raentoe* aide It ndcvzary and Idmnfif by block number)(SEE REVERSE SIDE)1f--p-oduced byNATIONAL TECHNICAL-NFOPMATION SERVICES : ;.~I S Oo|)pn {,1rn n (,( Con 'mo:ce-I I _ I ISpr;n-pjl-e-*d VP. i 147 Z61 IiON Of t N(OV 95IS *7, UNCL&SSIFIEDIs SECUR11Y CLASS)FIC&TATON OF THIS PAGE (Utmi Dvta )UNCLASSIFIEDSECURITY CLASSIFICATION o THIS PAGE( Do--m- U10 Block No. 20 ABSTRACT-A compilation of PLANE STRAIN KIC data is presented for metals manu-factured in the USA and Europe, including SO steels, 21 titanium alloys,38 alumiuum alloys, and one beryllium material.)}

4 The data corresponds tostatic loading in nautral laboratory environment. The effect of tempera-tuie is included in the tables along with the direction of testing, theform and size of the material, its composition and heat treatment, andthe specimen type and size. (Author)UNCLASSIFIED%ECURi ry CLASSIFICATION 101 Y1hS PAGEMl . DOM )--., A----TA8UF OF CO0%TENTrSfitle 1 DEFINITIN CF SYMBOLS AND UNITSREFERLMCESE BIBLIOGRAPHIIYKic DATAA. Steel Low AlloyAISi 43300I, EN30B3SN%016, L%40C 311-11 AISI 4140 4 AiSI 4540 5 MAC 7I'vZ4. Ni-Cr-!4o-i 8ii. Nickel 2C .% 109%i'4Co- .4-5C Hi10 Nickel 12iii. Haraging Steel12 Nickel 13IS Xi-200 Grade Ni-250 Grade, DID$212, 6100, G110, 18 is18 Ni-300 Gzade, G125 1618 Ni-350 Grade 17: ,v. Stainless Steel17-4 PII 1817-7 Pit "o 20 PilIl83-1o.

5 FVSZOR 21MU'43SS, AFC-77, AaC-20 22v. Lcew StrengthAilS-C, ASTM A203 :AISI 1045 24 ASM; A216 25 AMT! A'. 2, 26 SAS"W! AS33 27,STMf A-42, ASM A543 28vi. Intertwdiate Stt. rthAISI 1144, !fl 80 29 ASMT A469, 30 ASV4 A470, Cr-Mc-V 31 XASr* A471, Ni-r-!P-- 32AS'11 AS 7-F, HY 130 33a. Ttanium Alloysi. a Sn 34111 679, 1141 685, . , 6AI-2Sn-CZr-Z4o 3 SUwllB. Titanium ttlloYs (Cont.)iii. u-8 AlloysI4I SS0j, II 551, 6AW-3 1O 36IA1 6 W 37IA1-3No-IV, 7A1-2.,1o, 7AI-4'1o 386AI-4'V 396AI-6V- Sn 406A1-6V-4Zr-4Mo, 6A!-2Sn-4Zr-6N'o, 6AI-2Sn-2Zr-3lo-2Cr 41iv. 8 Alloys13t'-I1Cr-3A. 8&4o-8V-2Fo-3A1. , 3A1-8V-6Cr-4Zr 42C. Aluminui Alloysi. Copper Alloys2(04, DTM 5020, 111) 66, BS 177, BS L93, GB-26S 432020 442021, 2219ZC-24. 2124, DTD S000, A-U4Gl 462613, RR 58, DTh 731, C01 003/41, A-U2QV 47ii.

6 Alloys7031, 7049, 7050 487007 497075, DID SOS0, 0TD 5074, BS L9S, AZ 74, 7175 sO7178, DTD 363 51iii. Zn-Mlg-Mn Alloys"700!9. 7005 52/079 53 DTD 5024, 1'W 50L. 547081), .-75S 55iv. Other Aiinum Alloys6061 56D. BerylliumS-200 57 ; "INTRODUCTIONThe PLANE STRAIN FRACTURE toughness values presented in this compilation are expressed in terms oflinear elastic FRACTURE mechanics. These KIC values have been obtained by the ASTM' E399-72 "StandardMethod of Test for PLANE STRAIN FRACTURE toughness Testing of Metallic Materials" or a similar data compilation includes materials manufactured in the USA and Europe. The following factors areinvolved in the selection and interpretation of the KIC ConditionsThe material values shown correspond to quasi-static of approximately one to three minutesduration.

7 The environment is a neutral laboratory otivironment in which no aggressive chemicals orextreme of humidity are intentionally TypesK values shown have been obtai-ied from AST? recommended bend and compact tensile specimens andfrom a variety of other specikens: four-point ben(, double cantilever beam, wedge opening loading, sideedge notched, center cracked specirens and a few double edge cracked and notched round cracked specimen data is rot included in the appendix since, although this configuration isextremely important in applicatiens, criteria for validity of KIC measurements of surface crackedspecimens have not been establis' for Validity of KIC ValuesThe AST%1 E399-72 requirerents are taken as the general guide for validity. However, since completedetails of factors cited by ASli.)

8 Are usually not available, personal judgment must be exercised. Forexample, although all data listed pertain to fatigue-cracked specimens, the range of imposed KI duringfatiguing is usually not repirted. In addition, the crack front curvature and the orientation of thecrack PLANE with respect to the loading axis are also unknown. Other typical unknowns are the criticalcrack length, the details of selection of the critical load value, the appearance of the FRACTURE sur-faces, the details of fixture design to minimize friction and the linearity of the displacement , it is often necessary to assume that in general the test measurements have been carried outaccording to good practice. In term of specific criteria for inclusion in this tabulation the ASlIlrequirement of thickness greater than (KIC/eYS)2, was applied.

9 Virtually .11 of the data satisfiedthis requirement. Although it would be destrable to require that crack length exceed (KIC/OyS)2,this criterion wrs not rigidly imposed. Tite minimum reported crack length for data presented in thisappendix is (KIC/oyS) of KIC ValuesIn general the KIC values shown are averages of several tests. The range of typical data may beinterpreted to be the average shown !10. In cases %here the range of toughness values was large,either the entire range is shown or the extremely high values were excluded before computing theaverage. It should be recognized that these accuracy limits rc'er only to the specific results obtainedand may not be appropriate in general for material of the s.,me nominal compositien, form, and sizewhich is processed and tested Influencing KICW here available, the influence, whether significant or negligible, of material form and thickness,composition, heat treatment, testing t'.

10 Mperature and material anisotropy and yield strength upon KICis shown by the series of data entecred in the tables. In most cases uhere a particular heat treatmentprodces both the highest yield strength and toughness , data for other heat treatments are omitted. It--is important to note that for some materials, data from the cumbination of composition and processingwhich leads to the highest toughness is not included in this compilation. In those instances it is notpossible. to obtain valid IC measurements for the particular material thickness of interest. There areadd- ional'-,arameters Vaich may also influeice KIC values vhich are not shown in these tables since-the"are -r tler infrequently reported. Thrse include melting practice, heat treating practice such asthe qize of quenching bath relative to the material size, and the amount of material straining during(' OF SY'MBOLS AND UNITSU lits, Symbols and NomenclatureData is presented in the customary units in tize United States with accompanying InternationalSotem Units (SI) it, parentheses.)