ARMY MIL-S-46049 C-1987 STRIP METAL CARBON STEEL COLD ROLLED HARDENED AND TEMPERED SPRING QUALITY《优质弹簧硬化回火的冷轧碳钢金属带》.pdf

《ARMY MIL-S-46049 C-1987 STRIP METAL CARBON STEEL COLD ROLLED HARDENED AND TEMPERED SPRING QUALITY《优质弹簧硬化回火的冷轧碳钢金属带》.pdf》由会员分享，可在线阅读，更多相关《ARMY MIL-S-46049 C-1987 STRIP METAL CARBON STEEL COLD ROLLED HARDENED AND TEMPERED SPRING QUALITY《优质弹簧硬化回火的冷轧碳钢金属带》.pdf（10页珍藏版）》请在麦多课文档分享上搜索。

1、MIL-S-LIbOLISC 75 m 7777706 OLL7856 L m 9. In M Ln In In zf ? ? N. r- * W K t; ? , W : ? O , ? W cr 4 a !o ? t ? d W M In d 7 In $ ? t 9 W In M In d cf In W M In Y In rl , In c- * In M m In In In C- M P ? o a, W In W ? 9 c- W m In 9 9 In W t- Ln ? ? m W rl W In c- W In In m In Ln W 9 t- Li 8 o j i i

2、 O .r- :. :o I I I 10 )W O I. m 2 2 E c o 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 MIL-S-4607C 75 7779706 OLL7860 3 a a a MIL-S-46 049C 3.9 Workmanship. The steel shall be clean and free of imperfections such as laminations, segregation an

3、d surface defects as is consistent with good comercial practice for this steel quality. 4. QUALITY ASSURANCE PROVISIONS 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 as

4、 specified herein. Except as otherwise specified 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

5、any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.1.1 Responsibility for compliance. All items must meet all requirements of sections 3 and 5. The inspection set forth in this specif

6、ication shall become a part of the contractors overall inspection system or quality program. shall not relieve the contractor of the responsibility of assuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling in quality c

7、onformance does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to acceptance of defective material. The absence of any inspection requirements in the specification 4.2 - Lot. Unless otherwise specified in the contract or order (see

8、 6.llr a lot shall consist of all steel submitted for inspection at one time, of the same heat, the same finish, the same thickness, and having been subject to the same hardening and tempering treatment. 4.3 Sampling. 4.3.1 Product Analysis. Samples for product analysis of chemical composition shall

9、 be taken from three different coils in each lot. sample shall be analyzed separately. Each 4.3.2 Mechanical properties. 4.3.2.1 Hardness and tensile strength. Sample for hardness tests shall be taken from 2 different coils representing each 5,000 pounds (2270 kg) of steel in the lot or from 2 cut l

10、engths representing different coils in each 5,000 pounds (2270 kg) in the lot. 4.3.2.2 Cold bending.-,Sampling for cold bending tests shall be as negotiated between the contractor and procuring activity. 4.3.3 Microexamination for decarburization. Samples shall be taken from 1 coil in each lot or fr

11、om one cut length in each lot. 4.4 Examination. 4.4.1 Visual. A representative sampling of the steel shall be examined for compliance with the requirements for finish (see 3.51, edge (see 3.61, and workmanship (see 3.981, and identification marking (see 3.8). 5 Provided by IHSNot for ResaleNo reprod

12、uction or networking permitted without license from IHS-,-,-MIL-S-46049C 4.4.2 Dimensional. A representative number of measurements shall be taken on each lot to determine cmpliance with the size and tolerance requirements (see 3.7). Thickness measurements shall be made with a micrometer. 4.4.2.1 Ca

13、mber. Camber is the deviation of a side edge from a straight line. The deviation shall be obtained by placing an eight-foot (2.44 metre) straight edge on the concave side and measuring the maximum distance between the steel edge and the straight edge. (See table 10 of ASTM A109) 4.5 Tests. 4.5.1 Tes

14、t specimens. 4.5.1.1 Chemical composition. Specimens for chemical analysis shall be prepared in accordance with ASTM A751. 4.5.1.2 Nechanical properties. 4.5.1.2.1 Hardness. Specimens shall be prepared in accordance with ASTM E 18. 4.5.1.2.2 Tensile strength. Specimens shall be prepared in accordanc

15、e with ASTM E 8. 4.5.1.2.3 Cold bending. Specimens for cold bending shall be prepared as negotiated between the supplier and procuring activity. 4.5.1.3 Microexamination. 4.5.1.3.1 Decarburization. Two specimens shall be prepared from the sample. The prepared surface of the specimens shall be not le

16、ss than 1 inch (25.4mm) in length representing the full thickness of the strip and shall be perpendicular to the direction of rolling. 4.5.2 Test methods. 4.5.2.1 Chemical composition. Chemical composition shall be conducted in I accordance with ASTM A751. 4.5.2.2 Mechanical properties. 4.5.2.2.1 Ha

17、rdness tests. Hardness tests shall be conducted in accordance with ASTM E 18. 4.5.2.2.2 Tensile strength. Tensile strengths shall be conducted in accordance with ASTM E8. 4.5.2.2.3 Cold bending. Cold bending tests shall be negotiated between the supplier and procuring activity. 6 I a a Provided by I

18、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-qbOqSC 75 M 777770b OlL7Bb2 7 M MIL-S-460492 4.5.2.3 Microexamination. 4.5.2.3.1 Decarburization. Microexamination of the specimens for decarburization shall be made at a magnification of 100 diameters. 4.6 Re

19、jectisn. 4.6.1 Rejection. Unless otherwise specified (see 6.2) where one or more test specimens fail to meet the requirements of the specification the lot represented by the specimen or specimens shall be subject to rejection. 4.6.2 Retest. When no sampling plan is provided or approved by the procur

20、ing agency (see 6.2) and where there is evidence that indicates that the specimen was not representative of the lot of material, and when the detail specification does not otherwise specify, at least two specimens shall be selected to replace each test specimen which failed. All specimens so selecte

21、d for retest shall meet the requirements of the specification or the lot shall be subject to rejection. 5. PACKAGING 5.1 Preservation. Strip shall be prepared for shipment in accordance with levels A, B, or C (defined in MIL-STD-1631, as specified (see 6.1). 5.1.1 Levels A and B. Strip shall be coat

22、ed with a preservative lubricating oil conforming to MIL-L-3150. 5.1.2 Level C. Strip shall be protected in accordance with general industry practice with a suitable anti-rust oil. 5.2 Packing. Strip shall be packed for shipment in accordance with level A, B, or C as specified (see 6.1). 5.2.1 Level

23、 A. Strip shall be packed in accordance with the requirements of MIL-STD-163. 5.2.2 Level C. Strip shall be packed in a manner to insure carrier acceptance and safe delivery at destination. 5.3 Marking for shipment. In addition to marking specified in the contract or order, marking for shipment shal

24、l be in accordance with the requirements of MIL-STD-129. 6. NOTES 6.1 Ordering data. Purchasers should select the preferred options permitted herein and include the following information in procurement documents : (a) (b) Chemical composition (see 3.2). (cl Hardness (see 3.3.1) or tensile strength (

25、3.3;2). (d) If other than scaleless, tempered finish is required (see 3.5). Title, number, and date of this specification. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-46049C (e) Size required (see 3.7). (f) (g) (h) Additional identificati

26、on marking, if required (see 3.8). Lot size, if other than as specified in 4.2. Level of preservation and packing required (see section 5). 6.2 Selection of chemical composition. 6.2.1 Steel grade designation numbers. While it is not common practice to specify cold rolled carbon steel strip to numer

27、ical designations indicating chemical composition, designations covering compositions (cast or heat analysis) commonly produced to this specification are shown in table II and may be used as a guide in procurement. i TABLE II. Chemical composition - heat analysis. AISI UNS Carbon, Manganese Phosphor

28、us, Sulphur, Silicon, Number Numbera/ % (iax. j % 1065 G10650 0.59-0.70 0.60-0.90 O. 040 O .O50 O. 15-0 -30 1074 G10740 .69- -80 .so- .80 .O40 .O50 -15- 030 1085 G10850 .80- .94 .70-1.00 .O40 .O50 .E- .30 1095 610950 .91-1.04 330-0.50 .O40 .OSO -15- -30 %/Previously released engineering drawings and

29、 other documents which specify a by a common usage, the range is the arithmetical difference between the two limits (e.g., 0.60 to 0.72 is a 0.12 range) 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-S-607C 75 7779706 0333864 O W MIL-S-46049C

30、 TABLE III. Cold rolled carbon spring steel, cast or heat chemical ranges and limits. Standard chemical ranges and limits, percent E lement When maximum of specified Lowest e 1 ement i s Range Maximum Carbon Over 0.60 to 0.80 incl. 0.11 (see Note 1) Over .80 to 1.35 incl. .14 0.60 Manganese To 0.50

31、incl. 0.20 Over 0.50 to 1.15 incl. .30 Over 1.15 to 1.65 incl. .35 0.40 Phosphorus To 0.08 incl. Over 0.08 to 0.15 incl. 0.03 .O5 0.04 c .O4 Sulphur To 0.08 incl. 0.03 Over 0.08 to 0.15 incl. .O5 Over .15 to .23 incl. .O7 0.05 .O5 .O5 Over .23 to .33 incl. .10 .O5 Silicon 0.10 To 0.15 incl. 0.08 Ove

32、r 0.15 to 0.30 incl. .15 Over .30 to . 60 incl. .30 Copper When copper is required O. 20 minimum is commonly specified Note 1. Carbon: The carbon ranges shown in the column headed “Range“ apply when the specified maximum limit for manganese does not exceed 1.00 percent. When the maximum manganese li

33、mit exceeds 1.00 percent, add 0.01 to the carbon rangaes shown above. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I, I MIL-S-46047C 95 7779706 0339865 2 MIL-S-46049C 6.3 Finish. Cold rolled carbon spring steel in strip form, hardened and temper

34、ed is also furnished in the following finishes: (a) Black tempered (b) Bright tempered (c) Tempered and polished (d) Tempered, polished and colored blue or straw 6.4 Key Words Cold rolled Carbon steel Springs Coi 1 s Killed steel Austenite grad size 6.5 Changes from previous issue. The margins of th

35、is specification are marked with vertical lines to indicate where changes (additions, modifications, corrections, deletions) from the previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and

36、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. 6.6 SI (metric) equivalents contained in this specification are in accordance with ASTM E 380. Custodian : Army - MR Review activities: Army - AV, MIr AR DSA - IS User activities: Army - AT Navy - OSr SH (KBWP# ID-0238ADISK 0141A. FOR MTL USE ONLY) Preparing activity: Army - MR Project 9515-AO50 ? Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-