ASTM B494 B494M-2003 Standard Specification for Primary Zirconium.pdf
《ASTM B494 B494M-2003 Standard Specification for Primary Zirconium.pdf》由会员分享,可在线阅读,更多相关《ASTM B494 B494M-2003 Standard Specification for Primary Zirconium.pdf(3页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: B 494/B 494M 03Standard Specification forPrimary Zirconium1This standard is issued under the fixed designation B 494/B 494M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number in parent
2、heses indicates the year of last reapproval.A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers two grades of zirconium metalcommonly designated as sponge or chunklets, but may alsotake other forms. This specification do
3、es not include crystal barzirconium.1.2 Unless a single unit is used, for example corrosion massgain in mg/dm2, the values stated in either inch-pound or SIunits are to be regarded separately as standard. The valuesstated in each system are not exact equivalents; therefore eachsystem must be used in
4、dependently of the other. SI valuescannot be mixed with inch-pound values.1.3 The following precautionary caveat pertains only to thetest method portions of this specification. This standard doesnot purport to address all of the safety concerns, if any,associated with its use. It is the responsibili
5、ty of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.2. Referenced Documents2.1 ASTM Standards:E 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications23. Te
6、rminology3.1 Lot Definitions:3.1.1 castingsa lot shall consist of all castings producedfrom the same pour.3.1.2 ingotno definition required.3.1.3 rounds, flats, tubes, and wrought powder metallurgicalproducts (single definition, common to nuclear and non-nuclear standards)a lot shall consist of a ma
7、terial of thesame size, shape, condition, and finish produced from the sameingot or powder blend by the same reduction schedule and thesame heat treatment parameters. Unless otherwise agreedbetween manufacturer and purchaser, a lot shall be limited tothe product of an 8 h period for final continuous
8、 anneal, or toa single furnace load for final batch anneal.3.1.4 spongea lot shall consist of a single blend producedat one time.3.1.5 weld fittingsdefinition is to be mutually agreed uponbetween manufacturer and the purchaser.4. Classification4.1 Primary zirconium is furnished in two grades:4.1.1 G
9、rade R60702Unalloyed zirconium.4.1.2 Grade R60703Unalloyed zirconium for metallurgi-cal alloying.5. Ordering Information5.1 Orders for material under this specification shall includethe following information:5.1.1 Quantity (weight),5.1.2 Name of material (zirconium sponge or chunklet),5.1.3 Grade nu
10、mber (see 4.1),5.1.4 ASTM designation and year of issue,5.1.5 Check analysis (see 7.2),5.1.6 Sampling of small blends (see 8.1.1),5.1.7 Inspection (see 11.1),5.1.8 Certification report (Section 13),5.1.9 Product marking (Section 15),5.1.10 Packaging (Section 16),5.1.11 Oxygen limits, when needed (Ta
11、ble 1), and5.1.12 Additions to the specification and supplementaryrequirements, as required.NOTE 1A typical ordering description is as follows: 3000 lb (2000kg)zirconium sponge, ASTM B 494 - 01, Grade R60703.6. Materials and Manufacture6.1 Zirconium metal is usually prepared by reduction ofzirconium
12、 tetrachloride, and it gets its physical characteristicsfrom the processes involved in production. These characteris-tics may be expected to vary greatly with manufacturingmethods. This specification, however, is not limited to metalprepared by reduction of tetrachloride or to material of anyspecifi
13、c physical form.6.2 Only virgin zirconium metal, in identified, uniform,well-mixed blends, shall be supplied under this specification.7. Chemical Composition7.1 The material shall conform to the requirements as tochemical composition prescribed in Table 1.1This specification is under the jurisdictio
14、n of ASTM Committee B10 onReactive and Refractory Metals and Alloys and is the direct responsibility ofSubcommittee B10.02 on Zirconium and Hafnium.Current edition approved May 10, 2003. Published May 2003. Originallyapproved in 1969. Last previous edition approved in 2001 as B 494/B 494M - 01.2Annu
15、al Book of ASTM Standards, Vol 14.02.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.2 The purchaser may perform a check analysis for anyelements listed in Table 1.7.2.1 The manufacturers analysis shall be considered asverified if
16、the check analysis confirms the manufacturersreported values within the tolerances prescribed in Table 2.Practice E 29 shall be used to establish significant digits.8. Sampling8.1 Sampling for Chemical Analysis:8.1.1 The following method shall be used for blends of 3000lb (1362 kg) or more. Smaller
17、blends shall be sampled asagreed upon between the manufacturer and the purchaser.8.1.2 The method shall produce a representative sampleamounting to a minimum of 1 % of the quantity sampled. Thesample shall be prepared by running the full quantity througha proportioner or splitter so arranged as to g
18、ive the requiredamount of sample material. A minimum of 30 lb (14 kg) of thissample shall be taken to prepare the evaluation ingot describedin 10.1.8.1.3 If analytical samples are required for the determina-tion of magnesium or sodium and chloride, they must be takenfrom the primary zirconium metal
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ASTMB494B494M2003STANDARDSPECIFICATIONFORPRIMARYZIRCONIUMPDF

链接地址:http://www.mydoc123.com/p-461383.html