1、Designation: A623 11A623 16Standard Specification forTin Mill Products, General Requirements1This standard is issued under the fixed designation A623; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A num
2、ber in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope1.1 This specification covers a group of common requirem
3、ents, which unless otherwise specified in the purchase order or in anindividual specification, shall apply to tin mill products.1.2 In case of any conflict in requirements, the requirements of the purchase order, the individual material specification, and thisgeneral specification shall prevail in t
4、he sequence named.NOTE 1A complete metric companion to Specification A623 has been developedSpecification A623M; therefore no metric equivalents arepresented in this specification.1.3 The following safety caveat covers Annex A3 through Annex A10 of this specification: This standard does not purport
5、toaddress all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establishappropriate safety and health practices and determine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A370 Test
6、 Methods and Definitions for Mechanical Testing of Steel ProductsA700 Guide for Packaging, Marking, and Loading Methods for Steel Products for ShipmentA987 Practice for Measuring Shape Characteristics of Tin Mill ProductsD1125 Test Methods for Electrical Conductivity and Resistivity of WaterE18 Test
7、 Methods for Rockwell Hardness of Metallic MaterialsE112 Test Methods for Determining Average Grain Size2.2 U.S. Military Standards:3MIL-STD-129 Marking for Shipment and StorageMIL-STD-163 Steel Mill Products, Preparation for Marking and Storage2.3 U.S. Federal Standard:3Federal Std. No. 123 Marking
8、 for Shipment (Civil Agencies)3. Terminology3.1 Definitions:3.1.1 base box, na unit of area equivalent to 112 sheets 14 by 20 in. or 31 360 in.2 (217.78 ft2) (see Annex A1).3.1.2 base weight, na term used to describe the thickness of tin mill products. The designated base weight multiplied by afacto
9、r of 0.00011 is the nominal decimal thickness, in inches of the material. Although it is customary industry-wide to use theterm “pound” (for example, 75 lb), following the base weight designation, base weight is correctly used only to define nominalmaterial thickness, and is not a measure of the wei
10、ght of a base box.3.1.3 black plate, nlight-gage, low-carbon, cold-reduced steel intended for use in the untinned state or for the production ofother tin mill products. It is supplied only in a dry or oiled condition.1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stain
11、less Steel and RelatedAlloys and is the direct responsibility of Subcommittee A01.20on Tin Mill Products.Current edition approved Oct. 1, 2011Dec. 1, 2016. Published October 2011December 2016. Originally approved in 1968. Last previous edition approved in 20102011as A623 - 10.A623 - 11. DOI: 10.1520
12、/A0623-11.10.1520/A0623-16.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from Standardization D
13、ocuments Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically
14、 possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C70
15、0, West Conshohocken, PA 19428-2959. United States13.1.4 box annealing, na process involving slow heating of coils to a subcritical temperature, holding, and cooling therefrom,to soften the strip and relieve stresses produced during cold reduction. It is accomplished in a sealed container. By introd
16、ucing andmaintaining an inert or slightly reducing atmosphere during the cycle, a relatively bright surface is obtained.3.1.5 bright finish, na surface that has a melted tin coating.3.1.6 bundle, na unit containing two or more packages of a cut size, supported by a platform, generally consisting of
17、ten ormore packages. (Also commonly referred to as a multiple-package lift containing two or more packages.)3.1.7 burr, nmetal displaced beyond the plane of the surface by slitting or shearing (see 9.1.7 and 9.2.6).3.1.8 camber, nthe greatest deviation of a coil edge from a straight line. The measur
18、ement is taken on the concave side andis the perpendicular distance from a straight line to the point of maximum deviation (see 9.1.9 and 9.2.7).3.1.9 chemical treatment, electrolytic tin plate, na passivating chemical treatment applied to the surface of electrolytic tinplate to stabilize the plate
19、surface characteristics compatible with a specified end use (see Annex A8 and Annex A10).3.1.10 chemically treated steel, nlight-gage, low-carbon, cold-reduced steel that has a passivating or chemical treatmentapplied to the surface to provide rust resistance or retard underfilm corrosion, or both.3
20、.1.11 cold reductionthe process of reducing the thickness of the strip cold, generally accomplished by one rolling througha series of four-high mills arranged in tandem.3.1.12 continuous annealinga process consisting of passing the cold-reduced strip continuously and in a single thicknessthrough a s
21、eries of vertical passes within a furnace consisting of heating, soaking, and cooling zones to soften the strip and relievestresses produced during cold reduction.An inert or slightly reducing atmosphere is maintained in the furnace to obtain a relativelybright strip.3.1.13 differentially coated tin
22、 plateelectrolytic tin plate with a different weight of tin coating on each surface.3.1.14 double-reduced plateplate given a second major cold reduction following annealing. Some double-reduced productsare produced to achieve a minimum level of ductility (% elongation) in the material. These product
23、s carry the designation of HighElongation Double Reduced, or HEDR.3.1.15 electrolytic chromium-coated steellight-gage, low-carbon, cold-reduced steel on which chromium and chromiumoxides have been electrodeposited.3.1.16 electrolytic tin platelight-gage, low-carbon, cold-reduced steel on which tin h
24、as been electrodeposited by an acid oralkaline process.3.1.16.1 J Plateelectrolytic tin plate, No. 50 or heavier tin coating, with improved corrosion performance for some galvanicdetinning food products as specified in the table following 3.1.16.2 and as measured by the Special Property Tests for Pi
25、ckle Lag(PL) (see Annex A3), Iron Solution Values (ISV) (see Annex A5), Tin Crystal Size (TCS) (see Annex A4). The alloy layer isnormally light in color, characteristic of the acid tinning process.3.1.16.2 K Plateelectrolytic tin plate, No. 50 or heavier tin coating, with improved corrosion performa
26、nce for some galvanicdetinning food products as specified in the following table and as measured by the Special Property Tests for Pickle Lag (PL) (seeAnnex A3), Iron Solution Value (ISV) (see Annex A5), Tin Crystal Size (TCS) (see Annex A4), and Alloy Tin Couple (ATC) (seeAnnex A6) and Aerated Medi
27、a Polarization (AMP) (see Annex A9).Special Properties AimsPickle LagA 10 s maxIron Solution Value 20 g Iron maxTin Crystal Size ASTM No. 9 or largerAlloy Tin CoupleB 0.12 A/cm2 maxA The Pickle Lag test is not necessary if the product is processed using an anneal atmosphere gas of HNX or H2.B Good m
28、ill practice has demonstrated the ability to average 0.05 A/cm 2 or less over an extended period of production.3.1.16.3 DiscussionThe production of J Plate and K Plate require special processing and testing. In order to receive J Plateor K Plate, this requirement must be specified on the order.3.1.1
29、7 length dimensionthe longer dimension of a cut size.3.1.18 loteach 20 000 sheets or part thereof or the equivalent in coils, of an item in a specific shipment having the same orderspecifications.3.1.19 matte finisha surface that has an unmelted tin coating, generally on a shot-blast finish (SBF) ba
30、se steel.3.1.20 mechanical designationan arbitrary number to designate Rockwell hardness and ultimate tensile strength character-istics for double-reduced plate (see 8.2).3.1.21 oilinga lubricant film applied to both surfaces of the plate.3.1.22 packagea unit quantity of 112 sheets.3.1.23 passivatin
31、g treatmenta surface chemical treatment (see 3.1.9).A623 1623.1.24 ratiothe number of base boxes in a package of a given size (see 3.1.1 and Annex A1).3.1.25 Rockwell hardness testa test for determining hardness (see Annex A2).3.1.26 rolling widththe dimension of the sheet perpendicular to the rolli
32、ng direction.3.1.27 single-reduced plateplate produced with one major cold reduction.3.1.28 steel Type Dbase-metal steel aluminum killed, sometimes required to minimize severe fluting and stretcher-strainhazards or for severe drawing applications (see Table 1).3.1.29 steel Type Lbase-metal steel, lo
33、w in metalloids and residual elements, sometimes used for improved internal corrosionresistance for certain food-product containers (see Table 1).3.1.30 steel Type MRbase-metal steel, similar in metalloid content to Type L but less restrictive in residual elements,commonly used for most tin mill pro
34、ducts (see Table 1).3.1.31 surface appearancevisual characteristics determined primarily by the steel surface finish. For electrolytic tin plate, theappearance is also influenced by the weight of coating and by melting or not melting the tin coating.3.1.32 surface finishessteel surface finishes for
35、tin mill products imparted by the finishing-mill work rolls.These may be eitherground or blasted-roll finishes.3.1.33 temper designationan arbitrary number to designate a Rockwell hardness range for single-reduced products, whichindicates the forming properties of the plate (see Section 8 and Tables
36、 2 and 3).3.1.34 temper milla mill for rolling basemetal steel after annealing to obtain proper temper, flatness, and surface finish. It mayconsist of one stand or two stands arranged in tandem.3.1.35 tin coating weightthe weight of tin applied to the steel surface, usually stated as pounds per base
37、 box, distributed evenlyover both surfaces of a base box, the total coated area being 62 720 in.2 Thus 0.25 lb/bb has a nominal weight of 0.125 lb on eachof the two surfaces. Frequently, the coating is referred to as a designation number, and the decimal point is omitted. Thus, 0.25lb/bb is 25.3.1.3
38、5.1 For differentially coated tin plate, twice the nominal coating weight on each side is designated, usually by the numbermethod; hence, 10/25 designates the nominal weight of 0.05 lb/bb on one side and 0.125 lb/bb on the other side.3.1.36 vapor vacuum depositionthe condensation and solidification
39、of the metal or metal containing vapors, under highvacuum, to form deposits onto a steel surface.3.1.37 width dimensionthe shorter dimension of a cut size.4. Base Metal4.1 The steel shall be made by the open-hearth, electric-furnace, or basic-oxygen process.5. Chemical Composition5.1 The steel shall
40、 conform to the chemical composition requirements as prescribed in Table 1 except as otherwise agreed uponbetween the manufacturer and the purchaser.TABLE 1 Chemical Requirements for Tin Mill ProductsElement Cast Composition, max %Type D Type L Type MRCarbon 0.12 0.13 0.13Manganese 0.60 0.60 0.60Pho
41、sphorus 0.020 0.015 0.020Sulfur 0.03 0.03 0.03SiliconA,B 0.020 0.020 0.020Copper 0.20 0.06 0.20Nickel 0.15 0.04 0.15Chromium 0.10 0.06 0.10Molybdenum 0.05 0.05 0.05AluminumC 0.20 0.10 0.20Other elements, each 0.02 0.02 0.02AWhen steel produced by the silicon killed method is ordered, the silicon max
42、imummay be increased to 0.080 %.BWhen strand cast steel produced by the aluminum killed method is ordered orfurnished, the silicon maximum may be increased to 0.030 % when approved bythe purchaser.CTypes Land MR may be supplied as non-killed or killed, which would respectivelybe produced without and
43、 with aluminum additions. Minimum aluminum level forType D is usually 0.02 %.A623 163TABLE 2 Temper Designations and Hardness ValuesSingle-Reduced Tin Mill ProductsBox AnnealedNOTE 1Thinner plate (0.0083 in. ordered thickness and lighter) isnormally tested using the Rockwell 15TS scale and the resul
44、ts convertedto the Rockwell 30TS scale (see Annex A2 and Table A2.1).TemperDesig-nationRockwell Hardness ValuesAll Thicknesses HR30TSACharacteristicsand TypicalEnd UsesNominal RangeBT-1 (T49) 49 4553 soft for drawing parts such asnozzles, spouts, and oil filtershellsT-2 (T53) 53 4957 moderately soft
45、 for drawingshallow parts such as rings,plugs, and pie pansT-3 (T57) 57 5361 fairly stiff for parts such as canends and bodies, closures, andcrown capsT-4 (T61) 61 5765 increased stiffness for canends and bodies, crown caps,and large closuresAThese ranges are based on the use of the diamond spot anv
46、il and a 116 in.hardened steel ball indenter.BThese ranges are based on the use of the diamond spot anvil and aThe hardnessranges are requirements unless otherwise agreed upon between producer anduser.116 in. hardened steel ball indenter.Test conditions:1. For referee purposes, samples of blackplate
47、, unreflowed ETP, and ECCS shallbe aged prior to testing by holding at 400F for 10 min.2. The For referee purposes, the hardness test area on material produced withSBF or equivalent rolls shall be sanded smooth on both surfaces.3. To avoid incorrect results due to the cantilever effect, samples shal
48、l have anarea no larger than 4 in.2 and the point of testing shall be no more than 12 in. offthe center of the samples.TABLE 3 Temper Designations and Hardness ValuesSingle-Reduced Tin Mill ProductsContinuously AnnealedNOTE 1Thinner plate (0.0083-in. ordered thickness and lighter) isnormally tested
49、using the Rockwell 15TS scale and the results convertedto the Rockwell 30TS scale (see Annex A2 and Table A2.1).TemperDesignationRockwell Hardness ValuesAll Thicknesses HR30TSA Characteristics and TypicalEnd UsesNominal RangeBT-1 49 4553 soft for drawing parts such asnozzles, spouts, and oil filtershellsT-2 53 4957 moderately soft for drawingshallow parts such as rings,plugs, and pie pansT-3 (T57) 57 5361 moderate stiffness for partssuch as can ends and bodies,closures, and crown capsT-4 (T61) 61 5765 increased stiffness
