1、I INCH-POUND 1 MIL-DTL-1308OE =-E- 13 080D- 2 July 1984 DETAIL SPECIFICATION ELECTRODES, WELDING, COVERED: AUSTFMTIC STEEL (1 9-9 MODIFIED) FOR ARMOR APPLICATIONS This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specificati
2、on covers austenitic steel arc welding electrodes for use on steels of high hardenability (see 6. i). 1.2 Classification. The electrodes should be hrnished in the types, classes, and sizes shown in tables IA and IB as specified (see 6.2). TABLE IA. Types of electrodes. Type - I/ 7 - 2/ - 31 Descript
3、ion MIL-3 0%- 1 5 MIL-3 07L- 16 MIL-3 07T- 1 5 MIL-3 07T- 16 MIL-3 08MoL- 15 MIL-308M0L-16 MIL-308M0T-15 MIL-3 08MoT- 16 Lime Lime Titania Titania Lime Lime Titania Titania covering DC, Electrode Positive covering AC-DC covering DC, Electrode Positive covering AC-DC covering DC, Electrode Positive c
4、overing AC-DC covering DC, Electrode Positive covering AC-DC - 1/ Electrodes designated-16 (qualified for use on both AC and DC) should be considered as meeting all the requirements for electrodes designated-15 (DC only) of the same composition and covering. For DC welding applications- 15 and - 16
5、electrodes of the same composition and covering are interchangeable. - 21 “L“ types have lime coverings which contain less than 9 percent Ti02 and consist chiefly of alkaline-earth elements and their components. - 3/ “T“ types have titania coverings which contain more than 20 percent Ti02. Beneficia
6、l comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Director, U.S. Army Research Laboratory, Weapons and Materials Research Directorate, ATTN: AMSRL-WM-M, Aberdeen Proving Ground, M 2 1005-5069 by using the
7、Standardization Document Improvement Proposal D Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 3439 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- flIL-DTL-L3OBOE RH 9999906 2007316 TB0 MIL-DTL- 13 080E TABLE IB. Classe
8、s and sizes with welding positions. Class Diameter: in.(mm) Length: in.(mm) Welding positions 2 2 3 1/8, 5/32 (3.2,4.0) 3/16 (4.8) 7/32, 114 (5.56, 6.4) 14 (356) All (overhead, vertical, horizontal and flat) 14 or 18 (356 or 457) 18 (457) Horizontal fillets and flat Horizontal fillets and flat 5/16,
9、 318 18 or 24 Flat (8.0, 9.5) (457 or 610) 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents in other sections of this specification or recommended for additional information or a
10、s examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications,
11、 standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (D
12、oDISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS DEPARTMENT OF DEFENSE MIL-A- 12560 Armor Plate, Steel, Wrought, Homogeneous (For Use In Combat-Vehicles and For Ammunition Testing). MIL-E-22200/1 Electrodes, Welding, Mineral Covered, Iron-Powder, Low Hydrogen Medium
13、 and High Tensile Steel, as Welded or Stress-Relieved Weld Application HANDBOOKS DEPARTMENT OF DEFENSE MIL-HDBK-1264 Radiographic Inspection for Soundness of Welds in Steel by Comparison to Graded ASTM E390 Reference Radiographs. (Unless otherwise indicated, copies of the above specifications, stand
14、ards, and handbooks are available from the Defense Automated Printing Service (DAPS), Building 4D, 700 Robbins Avenue, Philadelphia, PA 19 1 1 1-5094.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-L3OBOE .I 9999906 20873117 957 U MIL-DTL
15、- 13 080E 2.3 Non-Government publications. The following documents form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of the documents which are DoD adopted are those listed in the issue of the DoDISS cited in the solicitation. Unless otherwise s
16、pecified, the issues of documents not listed in the DoDISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM A5 17/A5 17M Pressure Vessel Plates, Alloy Steel, High-Strength, Quenched and Tempered OD adopted) (Application for c
17、opies should be addressed to the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) AMERICAN WELDING SOCIETY (AWS) AWS A3 .O Standard Welding Terms and Definitions OD adopted) (Application for copies should be addressed to the American Welding Socie
18、ty, 550 N.W. LeJeune Road, Miami, FL 33 126.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a spec
19、ific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. The electrodes furnished under this specification shall be a product(s) which has been inspected and has passed the first article inspection specified herein or has been accepted on waiver or first article inspection requirements.
20、The contractor shall furnish a sample unit(s) for first article inspection and approval when specified (see 4.4 and 6.2). 3.2 Definitions. For the purpose of this specification the welding terms and definitions contained in AWS A3.0 shall apply. 3.3 Core wire. The core wire shall be fiee from injuri
21、ous defects such as segregations and non- metallic inclusions and shall conform to the compositional requirements specified in 3.5.1. 3.4 Covering. of electrodes. 3.4.1 Concentricitv. The covering on all sizes of electrodes shall be concentric to the extent that the maximum core-plus-one covering di
22、mension shall not exceed the minimum core-plus-one covering dimension by more than the following percentages of the mean dimension (see 4.6.2): Electrode size. in. (m) Percentage of mean dimension 3/32 (2.4) and smaller 118 (3.2) and larger 7 5 3.4.2 Uniformitv. The coverings shall be such as to be
23、consumed uniformly. 3.4.3 Dielectric strenah. The coverings of electrodes at room temperature and in the dry condition, as removed from freshly opened containers, shall have a dielectric strength sufficient to insulate effectively against a difference of potential of 110 volts AC, 60 cycles. 3 Provi
24、ded by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-L308OE Il 9979906 2087338 853 E MIL-DTL-13080E 3.4.4 Flaking of covering. Electrode coverings, when tested in accordance with 4.6.7, shall not flake. Flaking shall be understood to mean a “popping of
25、f or “dropping off of one or more pieces of the covering ahead of the welding arc so as to expose at least 50 percent of the circumference of the core wire. However, such exposure at the arc end at the time of striking the arc shall not be considered flaking provided that the core wire is not thereb
26、y exposed more than 118 in. (3.2 mm) beyond that specified for the arc end in table II. 3.4.5 Fumes. Fumes fiom the burning coverings of electrodes shall not be injurious to personnel when adequate ventilation is provided. 3.4.6 Slag removal. Slag deposited by the coverings shall be readily removabl
27、e from the cooled weld deposits with the use of hand tools (not air or power operated tools). 3.4.7 Extent of coverings. 3.4.7.1 Arc ends. The arc ends of the electrodes shall be sufficiently bare to permit easy striking of the arc. The length of the bare portion of the arc end (measured from the en
28、d to the point where the full cross section of the covering is obtained) shall not exceed the limits shown in table II. Electrodes with chipped coverings near the arc end, which expose the core wire for more than 118 in. (3.2 mm) beyond the specified distance, may be acceptable provided that no chip
29、 uncovers more than 50 percent of the circumference of the core. 3.4.7.2 Grip ends. The grip ends shall be bare within the limits shown in table II and on figure 1. 3.4.8 Electrode identification. 3.4.8.1 Labeling. The type designation or classification number shall be stamped or imprinted on the co
30、vering of each electrode on at least two locations. One imprinted type designation shall appear as closely as practicable to the bare grip end; the location of the second shall be determined by the manufacturer. TABLE II. Lengths of bare and tapered portions. Diameter, in. (mm) Grip End Arc End Maxi
31、mum dis- Maximum dis- tance to full Minimum bare diameter of cov- diameter of cov- tance to full portion, in. (mm) ering, in. (mm) (A) (BI ering, in. (mm) (C) 118, 5/32, 3/16 314 (19) 1-1/2 (38) 118 (3.2) (3.2,4.0,4.8) 7/32, 114, 5/16, 3/8 (5.6, 6.4, 8.0, 9.5) l(25.4) 1-314 (44) 3/16 (4.8) Note: See
32、 figure 1 for the significance of (A), (B), and (C). 3.4.8.2 Size and legibility. The imprinted designations shall be composed of block characters of equal size, the height of which shall be approximately 50 to 100 percent of the overall electrode diameter (core wire plus covering) but need not exce
33、ed a height of 5/32 in. (4 mm). The imprinted designations shall read from left to right from the grip end as shown on figure 1. The color of the 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4 MIL-DTL-lt3OOE II 999990b ZU87319 79T m MIL-DTL- 13
34、080E * print shaii stand out in contrast to the color of the electrode covering and printed designations shall be readable under normal lighting conditions. 3.4.8.3 Desimations. Printed type designations shall remain readily discemible on electrodes baked at temperatures up to 850F (454C) and on unu
35、sed portions of partially consumed electrodes or discarded stubs, and shall resist effacement by contact incidental to normal handling, shipping and storing. 3.5 Chemical comuosition. 3.5.1 Weld metal. The chemical composition of the deposited weld metal shall conform to the requirements shown in ta
36、ble III (see 4.6.3). TABLE III. Chemical composition of deposited weld metal (Dercent). Type Carbon Manganese Silicon Chromium Nickel Molybdenum Sulfur Phosphorus MIL-307 0.07- 3.30- 0.80 18.00- 9.00- 0.50- 0.03 0.04 O. 17 4.75 max. 21.50 10.70 1 SO max. max. MIL-308 0.07- 1.25- 0.80 18.00- 9.00- 1.
37、85- 0.03 0.04 O. 17 2.25 max. 21.50 10.70 2.25 max. max. 3.6 Core wire tolerances. 3.6.1 Length. The length of any electrode shall not vary by more than 118 in. (3.18 mm) from the 3.6.2 Diameter. The diameter of the core wire shall not vary from the nominal diameter by more length specified in the c
38、ontract. than 0.003 in. (0.08 mm). 3.7 Mechanical DroDerties. Mechanical properties for the weld metal shall be in accordance with table IV. TABLE IV. Mechanical properties. Elongation in 2 in. Ultimate tensile (50.8 mm) (trans- Diameter: in. (mm) minimum percent, minimum strength psi (Wa), verse sp
39、ecimen), 5/32, 3/16, 7/32, 114 (4.0,4.8, 5.6, 6.4) 5/16, 318 (8.0, 9.5) 85,000 (5 86,000) 85,000 (586,000) 7 10 3.8 Deposit patterns. Electrodes shall be capable of depositing all types of welds in the positions specified in table Il3. 5 Provided by IHSNot for ResaleNo reproduction or networking per
40、mitted without license from IHS-,-,-MIL-DTL-13OOE II 99999OL 2087320 401 m MIL-DTL- 13 080E 3.9 Fillet welds. 3.9.1 Soundness. Electrodes shall be capable of depositing single-pass fillets in the positions specified in table IJ3. Each fillet shall have penetrated to or beyond the junction plate edge
41、s and shall be free of slag inclusions and excessive porosity. Fillet welds shall conform to grade II of MIL-HDBK- 1264. 3.9.2 Convexity. The convexity of each fillet shall not exceed that shown on figure 2. 3.9.3 Undercut and overlap. Fillet welds shall be free from undercut and overlap. 3.10 Groov
42、e welds. As shown by radiographic examination, deposited weld metal in weldments produced in accordance with 4.6.4 shall conform to grade II of MIL-HDBK-1264, except that deposited weld metal in weldments produced in accordance with 4.6.4.5.2 shall conform to grade I of MIL-HDBK-1264. In all weldmen
43、ts, defects within 1 in. (25.4 mm) of ends may be disregarded. 3.1 1 Root pass soundness. Electrodes shall be capable of meeting the requirements of the root pass crack test specified in 4.6.6. 3.12 Workmanship. Electrodes shall be manufactured in accordance with high-grade commercial practice. The
44、electrodes shall be of uniform quality, clean, sound and smooth. The material shall be free from scabs, scale, cracks, blisters, pock marks, bruises or other surface defects. The electrodes shall be free from any substances or characteristics which would adversely affect the operation of the electro
45、des or cause unsound weld metal. 4. VERIFICATION 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein. Except as otherwise specifi
46、ed in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in this speci
47、fication where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements. 4.2 m. A lot shall consist of all electrodes of the same heat or core wire chemical analysis, type, and size, covered with the coating material from the same batch, and submitted
48、at one time for acceptance. 4.3 Classification of inspection. The examination and testing of electrodes shall be classified as follows: a. First article inspection (see 4.4). b. Quality conformance inspection (see 4.5). 4.4 First article inspection. First article inspection shall consist of tests fo
49、r all of the requirements of this specification. In testing electrodes, the welder shall not use any unusual technique of manipulating the electrode, any technique not commonly taught to, and proficiently used by, the average welder who has been trained and qualified to use electrodes of the types covered by this specification. The responsibility for performing first article inspection shall be as specified by the procuring activity (see 6.2). If multiple lots are offere
