1、MIL-S-22141B i t . STEEL, INVESTMENT CASTINGS ALLOY AND CARBON MIL-S-22141A 2 August 1965 (See section 6) This specification is approved for use by all the departments and agencies of the Department of Defense. 1. SCOPE 1.1 Sc0 e. This specification covers alloy and carbon steel castings made by -rp
2、 t e investment precision casting process. CSee 6.1) : c l , 1.2 Classification. Alloy and carbon steel investment castings shall be of the composition and conditions shown in table I. CSee 6.2.) TABLE I. Compositions and conditions. Conditions IC-4130 As cast, annealed, or heattreated IC-6150 As ca
3、st, annealed, or heattreated IC-4620 As cast, annealed, or heattreated IC-4340 As cast, annealed, or heattreated IC-4335M As cast, annealed, or heattreated .IC-4140 As cast, annealed, or heattreated . IC-8620 As cast, annealed, or heattreated IC-8630 As cast, annealed, or heattreated IC-8735 . . As
4、cast, annealed, or heattreated IC-8640 As cast, annealed, or heattreated IC-52100 As cast, annealed, or heattreated IC-Nitralloy 135 Heattreated IC- 1020 As cast or annealed IC-1030 Not identical to similar wrought metal designations. . As cast, annealed, or heattreated IC-1050 As-cast, annealed, or
5、 heattreated IC-1040 As cast, annealed, or heattreated t , Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-22141B 2, APPLICABLE DOCUMENTS *2,1 Issues of documents. The following documents of the issues in effect on date of invitation for bids o
6、r request for proposals form a part of this specification to the extent specified herein: SPECIFICATIONS Federal *MM“A-260 PPP-B-566 PPP-B-585 PPP-B-601 PPP-B-621 PPP-B-636 PPP-B-676 *PPP-c-1120 PPP-T-76 Adhesive , Water-resistant Waterproofed Paper) , (For Sealing Box, Folding, Paperboard Box, Wood
7、, Wirebound Box, Wood, Cleated-Plywood Box, Wood, Nailed and Lock-Corner Box, Shipping, Fiberboard Box, Setup Cushioning Material; Uncompressed Bound Fiber for packaging Tape, Pressure-Sensitive, Adhesive Paper, (For Carton Sealing) Military MIL-P-116 Preservation-packaging, Methods of MIL-B-121 Bar
8、rier Material, Greaseproofed, Waterproofed, Flexible MIL-C-6021 Casting, Classification and Inspection of STANDARDS Federal FED-STP151 Mtal, Test Mews Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-22141B FED-STD-356 Commercial Packaging of Su
9、pplies and Equipment Military MIL-STD-105 Sampling Procedures and Tables for Inspection by Attributes MIL-STD-129 Marking for Shipment and Storage MIL-STD-271 Nondestructive Testing Requirements for Metals (Copies of specifications, standards, drawings, and publications required by contractors in co
10、nnection with specific procurement functions should be obtained from the procuring activity or as directed by the con- tracting officer.) *2,2 Other publications. The following documents form a part of this specification to the extent specified herein, Unless otherwise indicated, the issue in effect
11、 on date of invitation for bids or request.for pro- posals shall apply, *UNIFORM CLASSIFICATION COMMIITEE AGENCY Uniform Freight Classification Rules (Application for copies for .these ratings, rules, and regulatons should be addressed to the Uniform Classification Committee, Room 1106, 222 South Ri
12、verside Plaza, Chicago, I11 60606.) American Society for Testing and Materials (ASTM) *ASTM E 8 Tension, Testing of Metallic Materials, Methods of *ASTM E 18 Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials, Test for “ASTM E 192 * Investment Steel Castings for Aerospace Appl
13、ications, Reference Radiographs of Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-22141B 1 “American .Nationa1 Standards Instituie (ANSI) ANSI B 46,l Surface Texture; Surface Roughness, Waviness and Lay (Application for copies should be addres
14、sed to the American National Standards Institute, Inc., 1430 Broadway, New York, N. Y. 10018,) *National Standards Association (NAS) NAS 823 Surface Comparison Standard (Copies of the above publication may be obtained from the National Standards Association, 1321 14th Street, N.W., Washington, D. C.
15、 20005.) 3, REQUIREMENTS 3,l Process, Castings shall be made by an investment process pro- ducing castings complying with this specification (.see 4.1,1. 3.1.1 Initial production castings. When Specified, castings from initial production shall be forwarded to a testing activity. designated in the co
16、ntract or order (see 4 , 1 2 and 6.2) .- *3,2 Chemical composition. The chemical analysis of castings shall comply with table II for the composition specified (see 6.2). *3.2 , 1 The contractor shall furnish an analysis of each master heat (not to exceed 10,000 pounds) used to provide molten metal o
17、r remelting stock. A production heat results from the remelting of a portion of a or deoxidizing are added to production heats, these heats shall be .con- sidered master heats. - master heat, When alloying elements other than required for carburizing 4 Provided by IHSNot for ResaleNo reproduction or
18、 networking permitted without license from IHS-,-,-. I- : I n X cd E v I b, I I I I l I I I I I l mm000 mmom v) oorloo O000 o mmmoo mmmm o ddaNN rlrcrld M 00000 O000 o N P4 o M M N. N. e. v. e. . 1l11I1111111l111 . rld O000 O0 o 0000000 drl rld O dOO0Odd O0 o ooomooo O0 o 000004 of rcTu?w?w ww h web
19、M.b.Mb. 111111ll1l111111 . oooooooooooooooc awo.wwwwwowawoooc ot5.rloooool-looodrld 1111l11111111111 oooooooooooooooc NNrnNNNNNNNNNNNNC . oooooooooooooooc boocnbcncncnhombaooc omooommmommoooo: . . oooooooooooooooc . 000000-oooorcooooc NMMMrce4.wMMPI)gfN.t?T 111111111111111 mmoammmmommmmmmu ooooooooo
20、ooooooc M d x O d m- MIL-S-22141B m P CI fi .- .Y, p Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-22141B 3.3 Condition. *3,3.1 Annealed or normalized and tempered. Castings shall be fur- nished in the.annealed or the normalized and tempered
21、condition specified in table III. *3,4 Response to heat treatment. Tensile specimens cut from sample castings or coupons shall be capable of meeting the mechanical properties of table III after oil quenching and tempering as appropriate for the respective composition. Water quenching is not permissi
22、ble except for the low carbon compositions , nor tempering at temperatures below 700 F unless otherwise specified. Mechanical properties of castings required for conditions other .than shown in table III shall be as specified in the contract or order (see 6.2) .or on the drawing for the castings, 3.
23、5 Surface roughness. When specified, roughness of surfaces shall not exceed 125 roughness height rating. Surface roughness shall be interpreted in accordance with the provisions of ANSI B 46.1. 3.6 Soundness. Castings shall comply with the specified radiographic standards selected by design personne
24、 from ASTM E 192. The required casting quality shall .be specified by class and grade i.n accordance with MIL-C-6021. 3.7 Decarburization. Unless otherwise specified, decarburization (partial plus complete) shall not exceed 0.003 inch from the surfaces of as received castings. *3,7.1 Carbon restorat
25、ion is permitted provided that the carbon content of the restored area is within the range of carbon content specified for the casting and no layer of decarburized material remains between the surface and core, Annealing and carbon restoration may be accomplished in one operation. 3.7.2 Castings whi
26、ch are to be case hardened by carburizing during final heat treatment need not have the carbon restored provided that the depth of decarburization does not exceed the minimum specified case depth requirement. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from
27、 IHS-,-,-MIL-S-22141B I i . I. O d O O IO O b 4 I O v) I- O b O O O IV) rl 4 O O IO O 4 V) x I O or m O I V) O O IO O Co 4 I* O Ln O O O IO Co d 1- O V) O O IO O 00 4 I- O O 4 O O O IO 4 O Q I O 4 O O IV) O OL) O O IV) O O 4 i! O m m a al a% 4k alal do alo 3: O U3 N Co 1 U, I O V) O O O IV) d d O O
28、IV) O d 4 O O O IO 03 O O IO O O N 3 O cn I m a al as .H k alal cdo V) M b 00 I U, O O IO O O N x i4 O N U I .a o) acd c, dk alal cdo qj Z!X s M M d I U H O O IO O O hl rl (=- . , x a O N U I a al U a d) t O d M d I U, O TP U3 Co U I H Provided by IHSNot for ResaleNo reproduction or networking permi
29、tted without license from IHS-,-,-P - MIL-S-ZZL4LB ME m 7777906 OLL7457 4 m MIL-S-22141B I t 8 I“ 199 199 mo Nl-l Nl-l mo O0 O0 O0 O0 O0 O0 Imo 1000 *D em O0 O0 O0 O0 O0 O0 D00 TZ r( 5 a, O0 O0 I O0 O0 m0 l-l - O0 O0 I om O0 Q)N d 3; I om NQI um O m O l-l I Provided by IHSNot for ResaleNo reproducti
30、on or networking permitted without license from IHS-,-,-d- MIL-S-22141B i . “3.8 Repairing of defects. Castings shall not he welded, plugged or repaired in any manner without written permission from the procuring .activity. 4 *3,8.1 When permitted in writing by purchaser, defects in castings may be
31、removed and the castings repaired by welding provided the weld repair area has properties comparable to those of the parent metal. Repairwelds shall be subjected to the same inspection and acceptance standards required of the casting, and weld repair area shall be suitably marked to facilitate.inspe
32、ction, The repair welding shall be performed prior to any heat treatment specification and to any nondestructive testing specified. 3.9 Dimensions. Castings shall conform to the drawings specified in the contract or order (see 6.2) with respect to dimensions and tolerances, 3.9.1 Tolerances. Unless
33、otherwise specified, critical dimensions on castings shall have as cast nominal tolerances of 40,005 inch per inch (of siie), Unless otherwise indicated on the drawings, all tolerances are absolute and shall be reduced by the amount of the measuring error. *3.10 Identification marking. Castings shal
34、l be identified by any suitable method with the melt or inspection lot number and in addition, when specified on the drawings, shall be marked to show the drawing or part number. The markings shall have no deleterious effect on service- ability. 3.11 Workmanship. Castings shall be uniform in quality
35、 and condition, free from cold shuts, fins, laps, foreign materials, and other injurious defects, Castings shall be well cleaned to produce the necessary finish, 4, QUALITY ASSURANCE PROVISIONS “4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the cont
36、ractor is responsible for the perform- ance of all inspection requirements as specified,herein, Except as other- wise specified, 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.
37、The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to.assure supplies and services conform to prescribed requirements, L- Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
38、rom IHS-,-,-MIL-S-22141B “4.1.1 Verification of foundry process. Unless otherw-se specified , castings shall be provided under radiographic control. This shall consist of radiographic examination of castings OOO pounds. Ingot and bars may be blended together, shot may be blended, but shot shall not
39、be blended with ingot or bars. When two or more master heats are blended, the resultant blend shall be considered a master heat. “6.4.2 Individual melt, An individual melt is metal remelted from . a portion. of a master heat for pouring castings. If alloying elements other than those required for ca
40、rburizing of deoxidizing are added to an individual melt, that melt shall be considered an individual master heat, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-22141B *6.5 Supersession data. This specification includes the requirements of MI
41、L-C-10005 (Ord) , dated 12 September 1949,. and MIL-S-22146(NOrd) a dated 31 August 1959, *6,6 The margins of this specification are marked with asterisks to indicate where changes (additions, modifications, corrections, deletions) from the previous issue were made. This was done as a convenience on
42、ly and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. I Custodians : Army - MR Navy - OS Preparing Activity: Navy - OS (Project No. MECA-0110) Reviewer : Army - WC, MU, EA . Navy - AS . . * J“ . 4 *- 16 *u.s. GOVERNMENT PRlNTING OFFICE: 1976-603-766/3801 . . _ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
