Five-digit numbers

UNS was established in 1974 by ASTM and SAE to reduce the conFusion involved in the labeling of commercial alloys. Metals have been placed into 15 groups, each of which is given a code letter. The specific alloy is identified by a five-digit number following this code letter. 

A four- or five-digit numbering system has been established to classify and identify different types of steel. Originally developed by the Society of Automotive Engineers (SAE) this system is now used by the American Iron and Steel Institute (AISI) to classify steel. 

The transition probability. A, is given in units of 10 s" and is listed to as many digits as is consistent with the indicated accuracy. The power of 10 is indicated by the E notation (i.e., E-02 means 10 ). Generally, the estimated uncertainties of the A-values are 25 to 50% for two-digit numbers, 10 to 25% for three-digit numbers and 1% or better for four- and five-digit numbers. 

Example 5.4.4. Consider the five-digit number 27163 that has been generated to identify a certain item. The Verhoeff scheme will be used to append a check digit K to the number 27163 to create the identification number 27163/f. 

As in the Main Work volumes, every Entry is numbered to assist ready location. The DNP Number consists of a letter of the alphabet followed by a five-digit number. In this Third Supplement the first digit is invariably 3. Cross-references within the text to Entries having numbers beginning with zero refer to Main Work Entries and with 1 and 2 refer to the First and Second Supplements. 

Color index number n. A five-digit number which describes the chemical constitution. For example, phthalocyanine green, C.I. Pigment Green 7, is C.I. 74260 (all phthalocyanines are, or will be, numbered 74000-74999). 

Every entry is numbered to assist ready location and the entry number consists of a metal element symbol followed by a five-digit number. 

In the second procedure, we evaluated the region of interest in left parietal area. We collected data from numerical formula task and numeric embedded in text task. Two tasks were presented in three different levels easy, moderate and difficult tasks. In easy level, three-digit number was performed in both kinds of task and four-digit number in moderate rate was showed in similar way. However, five-digit number with negative result were improved the difficulty level in mental arithmetic task. 

Recently, the European standard, EN 1780, has introduced a numerical designation system for casting alloys, which is based on the same principles as that for wrought alloys, but uses five-digit numbers without a space (Table A.3.2). This new designation is to replace the alphanumerical designation indicated in Table A.3.3, which is used only in France. 

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