uuid:57b7e382-a639-4b8c-8c10-0f97b345cdc7 endstream endobj 3 0 obj <>/Filter/CCITTFaxDecode/Height 526/ImageMask true/Length 5823/Subtype/Image/Width 1040>>stream �a�������VBc`������Ӹal�� �ɿ�aK@"1�"84!�A��,��28M4�j"$V�A��"��3���D��#�mlT0KLU���(�u�d. CLASSIFICATION OF MATERIALS BASED ON ENERGY BAND THEORY . Basis for usage of Material lT� �l��0D�hf6(LA�v`S�A��"�>�Lv'i&������D�z彩F��D���Z�U]S_ Metal classification provides a means of separating ferrous and nonferrous materials. Metals are further classified into Ferrous Metals, Non-Ferrous Metals. h޴�]o�0�����.J4���*k��ZEM���&ȸM�_?S�5���i�>�9'`�� D�GGb�G;2�Љvx��df�(�B��~�� ���e���V���c\���y��!�ŀ^O\��gD��g����U�n^W&F7P��)ReWk�Gd`g�*�U��[!��Z��S4�S$��N5���.� lua@ӻ�2|בֿ�;WD�e�Ex��%�>˰R��\B�T�A��~:}��ȋa�yD�� 5) stream �.��V$��&�5��@T3R� Extraction of metals. The relative values of electrical conductivity (σ) and resistivity (ρ=1/σ) help classify solids as: 1. 0. )�g������gt��L/�ɏ�ܱ�#"2s5���"g������3H i� �X��Qd�_< }�P�C0��*a��a3 l�U��m��Z���ֿM�DQ�ݡa8��gD��홿y,�'?PA��k���K��'߯K����/����nؽoO�}�����"���:_Ǻ�^�������k�0����$E:�&��$y٪�^�������P `��ͣ�C��:EAV^L��h�G��o���9� �a�N,&�OB�a0��6_m/�w�um4�4�t�iz\Z��4~�kک;�� ʺ%�:�]�ry�D���\�m����?������~����T\'D��u�[�o��ޫu�ۧ���tX�����?k�v҆�}�l%��«־��{wޓ�]Z��=�c��c�>+t�/�_������>�'�����������}5�,0�}�vB�ڮ��v��}�� �4���2��: 3�\ �: MP�/����_�~��������������b_��z����~��>����&���~N��F�}�t����umU��wJ8���o�����kN���k���Km'V��M�K�����!8TT|~ȣ����Nӵ��^��dX�a�,2 �h5���`�ȯ `�@�P`�|2û{��""""""""""zZ]�c�aCPeld� �u2&S;Q �)�[���;�.?' 0. n�����ZoT�/��lxj%��a4�lb�{! �c��(���������C����������O�!�S��]k����հDI�X���!4��sA�,rg4����us���q�9H+9Ns?O��q�!G ���W� 4��4�Za2��4���B/���'_�D��7���4�5A��i�_��Z{�����F;�c�Ew�7R1�C���N�ۯ���׿��� ���� �A�A�A�@� ٙ��‘��%l":����m�����[� '���麧�L �0�A7%��̺aկj��V������WT��ST�>�ªv���D]��G�J�j��!�G����}t����_��{�6>=�)��b?���?�׏���_׻[!%��Q������5�����h2(�ȱh4����BG ��0����_���׫�2��0�DB!�""C��������^�����ɧ����e�~�U����h����������4?���4?�Z��z�����_��������u뻵��_�����m.˥�����u�յ��l%o�8V�S�LlU1_��T��� �� Students and apprentices should become familar with at least a couple of them early on in their training. 2012-11-27T05:51:16Z Extrusion iv. The metal casting processis the oldest and popular method of manufacturing means of designing the desired shapes. 1. �k/!�����x-c �GܴMܾ@�����x˓t@M�L����㼬�ď8��a�/)��C�~^X��L�6>�8sk~����ͿE��/6�)�������L�{-���g䅔���a0U72�uN ���+��+D�8���U�B8�%�g�d�}�L�ʯ��P��trA �]�)�,�&iۨ$�`�f���`bj&�&n��C=��G�Ie��$9n5철(+�ss�Q���n+ ςHy���K1�rA�\�Q��]8����=���F+�"|í)�SX'P���\ck������.�Mr�� q���ey��L�͋ԍϡ�2�i��ѥ��\-�Z���.�=���OOXǛ�Z�E�^b!� t+J��tĎ�EO��~����D��i��0@�;����\���jm*���s�#ᾓ|�ʠ�0> E�*PCE��J�\�Kg��VuP��_�I(~m�u6��i%�m�L]��#�c�}2�'�%����$SRjԩ�_��$�ʔ:H�L ,f�J)�խ��פ8�\�i�#��n��^����ǒ�`fO���)��0 �ރ�>��"R�Z���- fʇhS;QK4��9���7�a#F)Z��_ʘ�y„4\A��*���tϋ���#�2�{�A��[65a|�@_�u9���L��<0�5��|=�sc�N����*�����j�92v����UU.�]��j��E���e�9�~y�qG��G;o���}�����Ǡ��l[�w�N�o U�� h�2�T0P���wJ,Nu��+��sqt���H�)K-�LN�w�K�O��K���s�+΄��2��K�3����Az]R���2J�-����$"T�&�T�� C0 �46�$�8���"�� � Xk/� 1. Classification of metals Metals can be divided into two main groups: ferrous metals are those which contain iron and non-ferrous metals that are those which contain no iron. <> Forging iii. A large number of metals are available in nature. Energy band theory can be used to explain the classification of materials. Classification of Materials. Metals Main Group Al, Ga, In, Sn, Tl, Pb, Bi, Po. The materials are classified based on their conducting property. Traditionally the three major classes of materials are metals , polymers , and ceramics . C���gd]����_�=���L5��W Gj����p�\�S����xWv���LI�;[J�4C���:,�k�`W��P¯�p ��>�-T�`)����b�V�����Rez]-���R;C=NC�Tj���{��o����I�މ����҂�F�a�0N�ޝM'?^��yo�*��� � p- Block elements: They belongs to group- 13 to 18. Conductors. In addition to classifying the elements into s block, p block, d block and f block, the elements can be classified in three categories on the basis of their properties as: (1) Metals (2) Non-metals and (3) Metalloids. endstream endobj 90 0 obj <>stream Normally major metals are in solid states at normal temperature. HEAT TREATMENT OF METALS GENERAL PURPOSE This chapter contains basic information pertaining to properties and identification of metal and heat-treating procedures used for metals. ��d���2�u ,'�Ӥ�Z�.�2vy�3d�f!MD�31�����v�!�O�Lˢ����[��O��ʘ)ګ%�L��/�+���H��%~��7i��h0���=�t�� �^�׮���m��OF��^��z �����Z_�~�V�?��aau��W�� 1.2 Non – ferrous metals These materials refer to the remaining metals known to mankind. By K.G.S.Prasad Rao Consultant Metallurgist 16/03/2016 2. The pure metals are rarely used as structural materials as they lack mechanical strength. The metal ores are found in the earth’s crust in varying abundance. Classification of Engineering Materials METALS & ALLOYS METALS polycrystalline consisting of a great number of fine crystals Possess low strength Do not have the required properties Faceted glass objects are sometimes called crystals ! endstream endobj 2 0 obj <>stream endstream endobj 92 0 obj <>stream Non-metals … geg*��e�� (L{�xG���:�-m�������7U�/�Qݕ[zR�]o Ƽ�ɘ�rؘ|�����u�����שÏ Xa_���`�}�l4��0��0��k�(��w#��+^�c&9uR�=)a�>5jk .Q��5So���y2���y�K�|�8�u���>>��8����>}��Bz��_�{��|��Ei�y��?�˻�=}��7� ��Z(s�Rv�ֱ�5���D�����y,~^DmI0�E�G�8�j����������� ���L�~�8Ww���x�0H���Px�MИ�0� �M�~'[��k�e�L���Mp=�ظ���m��mڬ������v�h�p�֒���˙_��`�� ���?�W� ��� Metals And Their Properties- Physical and Chemical All the things around us are made of 100 or so elements. For the purpose of this article, most current nanomaterials could be organized into four types: • Carbon Based Materials • Metal Based Materials • Dendrimers • Composites �2&��•�E�t]���E�#�|���>v@9!ށ��mp����������[��r3� �z�aRv�AEu��bq���۶�z�=+��i=&�D�i7��I��;�o���?�{i7\0`��z��6��;i?��~"���� Fig ( 2 ( Classification of ferrous metals. are termed as metal. A The extraction of metals from ores is what allows us to use the minerals in the ground! Guidance on the classification of inorganic UVCB substances for human health hazards 16 April 2020 Summary ... • Many metals and metal compounds, the constituents of inorganic UVCB substances, are well-characterized through e.g. Wk��� _��A��k� �j�bvO;Gn�`�JA0�P�XlOk��A6�8o��A�� ?g�8���N)�PD?͆Ag"̂aA�g��q�--$pb�Lv�u�`�MMPj��,��Ҧ�w޺j�����־�t�=4�կ��I7U��]�,�����(`�}"W�ַ��hN�|�O_ ���h�e�m}zI��տ�n�T�!��~�j��k�{ Woods 2. Classification of elements as metals and nonmetals. h(M�����Կ��a��M���Nף�����|��!GIt�u������ؤ�&�u�o�n��NҺZ_���V�kkm��]�kֱ�L�v66D��T4�iA�o�������*m[��� �A��dGA��Bp�w�Q%>��S� �`�C.Z�����DDDG��C��NJ�l8_�_�����[��_�ݤ�$� ��x2�m&�F���[ ^�L[Vm&ҷM����3 ����Pa��N��a$��A�GA'�P�T�s�q�vR�4 application/pdf fk����y��=�7P���A'+���.ܙ����v�tRU�I�7��8���t-�L��-�P���41�P��UQ��х"yQBK��� mK�zC-A9�/����ś�( =�a~�xk��a��HL �GA��&a4i��":ݧ�"-�!�a0B��0��0�b""""#�;[KL�"�vKQ�������������6���5��=I.D��漃�yB����A(DA�����"L��2�&c#�A��30�� RFl �40�CM4D4 4�$��T�a0���OZDQ܌z�G|Zu�u��0R~��@�3�A�_#�.d�|��̏�m�������*i��A�=��'�I������u�������*8������������������W������߯����D ����Z\��5�^S���_]���u������f�u�C�������]k��]>�����V���_k�_��ߍ�᥶Ն� �~_�U1�ll{�"��4�t�o��}}�J����d 酰�k�?�UQ`�4!�B!&�hL`�8�DDDDDDG���-���e���a$d&��h7!�����03��uf@��L&P���DDž\}4쏩rc�!�EE�ᤴ���?��mUեa�_J�&w��!I!]i��{_�>"���UHh*YGZ�IB���\dA&D�j΄9����)�3f�@��ȃ!���>�#�. 2012-11-27T05:51:16Z classification of metals -MEC 1 1. For the many different metals and alloys sold today, nearly as many classification systems exist to keep all the standards straight within the industry. �A���xf{V�:��e�NS�rܱ��Hr���ɎC@���!�89�å 0�aؔ�!��Y(q ܐ��u@}��7d,0���8���P�2��A��q�(���D8��ӆq8��fL�����Eقd�M� �&��[h70�@���h6�A0�o�W�7A�L ֶ���}�!�i��4l���n�C@0EAF��P�a���6��8�h3(r� F�/��Ld2�e��A ��)�.�S��@v �tP�Y�dtP�|���9��o���2� �VA��� m�7��IA�80�A��m�% ���G��@>���<1�'ն�9rlL���`D�T�d����$��� �&�H6��C0r�!�r X@��q�9�����a��D4)�$4�o����kM� _�CbÄf�� �۷I;�D.���̃��>��]�&苽HQ��0Bw�-���`�b METAL CLASSIFICATION All metals may be classified as ferrous or nonferrous. They are bendable into different shapes and have many uses in … �V��[��T¦�i���aER�DDDDDDB&. �(��}�u���)�,I^�ov��E�[�zcUU�ڛ�ix���!K�J�'��ux K��}9܃+�����P�(�)�Q�$~s��gR~��*�cw�:ĸҞa���:\�^*����Q]7��!��[�i��^<9�\-��܎jF`n�i�9.�B���t��KH[�YC�ڦ��l�բ���M����z��բR��YS�O��ЗU��H��U��Y�&I�V}�xBǐ��J�����uM�V���\vez��n��M��R�P�*3Q�UY�a�7=P��[X�����n�y��T�;3p�q�VuC8MK=�L;�U�[�c����(�.8�*c�����r�m��c `��*'�h�7���6��ƫ�� ٪5[p�D�[�|�u�� Nitro Pro 7 (7. alkali elements Li, Na, K, Rb, Cs, Fr 84 0 obj <>stream _�1[�����o�a�GM+؃�[4���F a���U��6-:º�Xu,y ��%�}@��L��g6�~c�f>9N�l)A,�2�,��䈂�� vU�G�4� b����b6' ��]��W�V��3�+k�A�� General classification i. 1.1 Metals Materials in this group are composed of one or more metallic elements (such as iron, aluminum, copper, titanium, gold, and nickel), and often also nonmetallic elements (for example, carbon, nitrogen, and oxygen) in relatively small amounts. CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES OF ELEMENTS Mandeleev’s Periodic Law: ... (Alkali metals) and Group-2 elements (Alkaline earth metals) which respectively have ns1 and ns2 outermost electronic configurations. They are the hardest elements which are found on the earth.. �P�Hh�!�B�X�Q�91Ɏq�0��&ۣ ���@�"""C_jl4�/S"�"���(��il:m�@�n9Z2:�ᜂ� xe조�����5�Ls�,���<2��!������5��T" NR Products having very complex shapes, hollow sections, complicated internal cavities and irregularly cur… Few examples of metals are iron, gold, silver, aluminium, copper, etc. Hence, σ ~ 10-11 – 10-19 S/m ρ ~ 1011 – 1019Ωm 1. This report highlights the classification of the engineering materials and their processing techniques. The ores are very different from the finished metals that we see in buildings and bridges. Metals are natural compounds of earth’s crust, in which they are generally found in the form of metal ores, associated both with each other and with many other elements. Due to […] Metals and alloys Materials. In such case less metal will bind in the presence of a metal with ahigher binding affinity. 531100 Engineering Materials I 2(2-0-4) CHAPTER �\~ZK�O�T�{����h4��N�U��!�K%��M��>����azX`��������J]*P�*}i��u�� Classification of Materials | Engineering Material Classification- In Material science engineering, the classification of materials is classified into Metals, Non-metals, Ceramics, Composites. The ferrous metals themselves can also be classified into "families', and these are shown in figure ( 2 ). 1 Classification of Biomaterials – Ceramics, Metals, Polymers, Composites 1 “A nonviable material used in Metals: Those materials which possess the characteristic of being hard, shiny, malleable, fusible, ductile, etc. Rolling ii. h�22V0P���w�/�+Q0���L)�62 |��u���.F�P�5H�Ч`Y�:�U�t+�lZ��ط�T��5,VxL �0�_%��p�"v�B�R��Vt��4��� ���iEt9�������Prs�'�(o��[�=Đq[���\d-�+p�\C�ߗBs�����4��; ̈��x,y�4����ԼChꜥ��D=�W���s�3Rc W|��T�9e����5\]^�l4(��!I� �DS h��Xms�6��0���C.���:�(��z�og�ɴ�| IPbC�*I�v~�- I��^���fbYw�,삻��P"a< R'D�ѐƄ 2"\ИȘ�0����( ("d$`DDL� Uh� U$�~��� A�"�3PDF(��� 9�!%���!�(Ɩc�`��1�����[��ci��'?8���.���ϸ��fd���c\gM^�3|�7نaVK���!L����f�(����>���S¹6⥮��z-���4�ĮIlP�0�p��X��8���I,���h��Gh���n�lt~3]�\���BF���l|=:%�/��e8�WG�����ӓ�������|�Z�����U�w��9e�"��r��i���?��xD�O���"r��οO�L�.�����V��|��i�������TU���J�O$k����'ſ��bB$�\ä��e����-{��كU�q>m�:?��Y��0���i�I�Oi� ayJ�\n����݃�����W�f��t��Ã��� v�ݛ�y�/�noo�[�7�X�$p7�Վڿ+�#A��d���B�^�z8���J��q`�_��ݧ@>��a��ټ߯������?�X� 2012-11-27T05:50:54Z The first classification of meteorites based on chemical compo-sition was by Farrington (1907), who chemically analyzed irons. mafia 2.METALS AND THEIR CHEMICAL CLASSIFICATION 2.1 Introduction A thorough understanding of chemical principles is an essential prerequisite for the safe use of metals and thus any proposed system of classification must be referenced to the periodic table of the elements. 78 0 obj Polymers 1. <. Casting can weigh from a few grams to several tons. View Notes - 531100- Chapter 8. �����p��Qᄞ�������ׯ��a&�u��������ZWk������6����n��� ���g h�L�� �I%A�U�A��U���$�B�=WI�Z����%��7�V��u�'��M�|_L$���F������CpM+-��w�#�|�#��� �e��.��GE�>JQtq����V�� rC�-��h��vbB�iSe���;xA�F�I �� �4��Ip�j��a�e�,� �a1�!�P ..�6�pAp�gXa!d=�a({a+���� �n����:m����;�h,o@��;-�I��K: h��SMk�@�+�fw]]� 4m9��z �%��A�`�}��&-��9��6��ͼ�X6ʀ� ]3�O��3Q���L��!2FF⟱�ޙ9� G4�pA�!#��L3C8`�U���'���>!��zv����w/Dv�KrQD���ވ��H�!�C�;���� �N�N��H'��i���A=>����O���v��������$�z������Џ��h �����B�o��T/������DA����������%� �����s��WO�K��K�������������Z�����k�����"��0��k����v����o� Nitro Pro 7 (7. Classification of materials JosepPoch March 07. endstream endobj 85 0 obj <>stream OD1643 US Army Correspondence Course Program 6 Credit Hours GENERAL The purpose of this subcourse is to introduce the student to the properties of metals, their characteristics, uses and identification codes. endstream endobj 91 0 obj <>stream The metals and non-metals differ in their properties. The process of extracting metal ores buried deep underground is called Mining. The castings can produce in sizes varying from a few mm to several meters. ��O$*׆�4��! risk assessments, voluntary risk assessments, REACH dossiers, high endstream For more specific information on metal and heat-treating techniques, refer to TM 43-0106. �4��I%Z�z_��]i*_}j��^�-}%�x�WZ�����]y���h��dQ�Ԉ�ߑG�%�ZIU�I$�T�M/�i��H}%Z�M%].+MV�ih��}u�c����%Q��?^��u��WX�B�Ф��T+_]$��_Iw�Z�RK�������� T%����Q�+T�%���z���K�$�W!��N��_����~�+���Z�~���\.�/�zJ����c��I%[K�IwZ�ֵ#UIW�֗_��Q��t�H�z\""?�j�]}RT��al��Z�z���GK����^G�֐h�KK.��Z��f�K�]uz�Ҏ"����5� ����W^��C�Y��ִ��TTzJ�iUUu�� zK�S�B�ڏ��I,�8�i-5ZU ҩuӥ�It�Ҫ��ꯤ����b�C��i�b����������+j#WQU�ª��,/a0�A�P�`�j�aS� %PDF-1.4 1. Hence, σ ~ 102 – 108 S/m ρ ~ 10-2 – 10-8Ωm 1. Classification of Metals •Ferrous-those based on iron Steels Cast irons •Nonferrous-all other metals Aluminum, magnesium, copper, nickel, titanium, zinc, lead, tin, molybdenum, tungsten, gold, silver, platinum, and others •Superalloys Conductor is materials that easily conducts or pass the current. endstream endobj 88 0 obj <>stream %PDF-1.6 %���� h�27Q0P���wJ,Nu��+��H�)K-�LN�w�K�O��KW07� ��K�MK��&�T�� C0��kg` ��� h�22P0P02T0R02R07U�����wJ,Nu��+��H�)K-�LN�w�K�O��KW01j��K�MK��&�T�� C0��kg�lPTbA�P{RbI1DoT�Kn� ��1B ���l�-�yYU H��WKo�6��W�(�"Jv"�R��`�lQ=E��q��8I�Ƕ����pfHJ�7-z�k�$�=�7�w}V��]eG����cv���*ck�o����� k������J�u'��f��/ŬΗ���bv�oks�����䟋�"�T̚���`����M�k�#ڳޞ3�8{�ک>+l�?��A�G�j� ~ �6N���&�=�,�, Based on these earlier schemes, Prior (1920) devel-oped a comprehensive meteorite classification scheme, in- Metals – These are solids which have very low resistivity or very high conductivity). A standard place setting includes metal cutlery, a polymer napkin, and a ceramic dish. endobj Classification of Metal Working Processes 1. �$���\�Cs^q�߹lO���$�؎�a�]r��GI����5i����y��hn��>����J�'�ŧ;�A���ak�I`�E߹���k��߿���S�Y��L�����b�� ���s4t/�*N�1��Ե��y��YXh��Z�d:m�1�s��[��]3�� �\�`]��RB�(��[憐5I=\��Io��);�ϣ5T�w�&��RJ9p����У[�U �m��)��K (SDjED���i��La0���T�0T� Casting made from any metal that can be melt and can have any configuration the designer desires. ꭄij�v�J� ��{�:I�B�m�!6��0ga���k��L�n��gCfζ����)`���NC4ȃQ���6�i1"��JĆ�)NC`��(l.� 5.1.1 Döbereiner’s Triads In the year 1817, Johann Wolfgang Döbereiner, a German chemist, tried to … Basic Classification of Engineering Materials Basically Engineering Materials Can be classified into two categories- MetalsNon-Metals Metals Metals are polycrystalline bodies which are having number of differentially oriented fine crystals. p߷�h�Bu٪�ű��s�Zs$��\U��a��K8��c���68�Ⱥ��KY��h3��)���x�'s2�9�ʌ�9���.�����_��Z�U՗��.���8��z3P�����:��M����ܪ�;PNW�n5�UnZ�BY��픵S�e��*�L�dʁL���C��k�x�ě�x��j����0+��r����j�q�:{�����I���K�4�'�4¥0_�$f�Ϳ���, g'��W�+���b��O� ��L��G�'Cy�T��T��H�f×�yy�0�%�W�|�#0 ~�iW(#C���c ��x�������"���l/y��"Ĝ*(�Q��(K)UO� ��Iǃ��Qh�~?0t�5�ex�K��;�7xo*�T����\jOf2�Le�3�E�"S%[�^L��5�W�^>�W� /�ѷ��`�=�R7u�+<4f!K��R�ȋēJ"�YxE*��3�%I�� �y,M��Ԕ�� '�~M��E\�"��w0�C�E��2M4�*�Ɨ#��"�$+D��� x�rdDh]��s��--��_`9 8| �o/r�� 'C�3�t&c�)����S!��*MyQ!UP8��$�#!��`u$|fhN �� ��� �� ��!�f.��PzpN������N�A� �`F�/0z#�m������0�k �_X| �G/9�yP�=����P9\�Ι�,�f��"f����S��^ There are different types of metals based on physical and chemical properties. endstream endobj 87 0 obj <>stream Cast iron is available in six general types: 1. alloyed iron 2. white iron 3. malleable iron 4. compacted graphite iron (CGI) 5. ductile iron 6. gray iron Ironis also alloyed use many types of elements including copper, molybdenum, chromium and nickel. %���� METAL PROPERTIES, CHARACTERISTICS, USES, AND CODES SUBCOURSE NO. Insulators – These are solids which have very high resistivity or very low conductivity. ALLOYS are produced by melting or sintering two or more metals or metals and a non-metal together. View 1_Introduction to Biomaterials (1).pdf from BIOLOGY 101 at King Faisal University. Composites 4. … @��% l�th&�� M�6&�l ��� L>aa��ä�I����A2gZ�A�� ޛAt���@�t��K���u����v�I���K�"4��KXI�T���"JP��$A: endstream endobj 89 0 obj <>stream c��5�{g\����kq��Y�� Semiconductors – These are solids which have resistivity or conductivity val… )�I0i&-@d�~HeA�~@bzj��@� I? Iron standard specification and metal characteristics from ASTM and SAE are in the table below: Heavy metals are elements with metallic properties and an atomic mass of > 20. Most of the metals are solids in nature except for mercury which shows liquid-like motion. There are plenty of free electrons available for electric conduction. A metal which is very good carrier of electricity is called conductor. Workshop classification and labelling of metals | 08 February 2012 13 Mixtures As the affinity of metals to AVS differs, it is possible that above a certain loading metals will compete for the (limited) AVS available. h�D�]�0��r�t��lk$Ad�� �݉.4����'t��{��% l6r7qG>.��5�5wIr�\���{�j�i�kvq�֨Pi�ZD���3�΍��l�v��|� �T�ZȒ�?_b�3��1���`$d婝��cu�cG��� �TY!/=..��S�'Ý| ̉�`$vʪ( r �ap�Z�o�j������9�5�w Ի���wA`q[x�8�d���LZ�t(�.�5A��՟t��=;�����Q=l/�����X��}����;�O u�#� General classification 5. 5) Metals and NonMetals Class 10 Notes NCERT CBSE Chapter 3 Chemistry Download pdf. endstream endobj 86 0 obj <>stream !�/��3�E��Xy�.w���n�G�N�s���u�Gv�j�΁�v�%[Aj��٦k�(j�8SFQ{Of�_�I'����ĜN�~�m ;a'���K;=��;���rܰ����w-W���ǝs���dԠ��c�4�N�FUǪʢ��������#_�I��;�])Ɉ6��lK}�����"_��I�d��@�V�a>���!� �:�� However, some metals such as mercury are also in liquid state… They can be classified in a variety of ways depending on what property or characteristic you use as a yardstick. Ferrous Metals. Later further classifications were tried out as our knowledge of elements and their properties increased. And is one of the first steps in manufacturing most products. Heavy metal contamination to soil and the environment has been accelerated in modern society due to industrialization, rapidly expanded world population, and intensified agriculture. application of external force. rPE�-���h���Pi���P91�P��dtw@�w@��Si�I�3��4�p�=�7L��H�� BƒA�j��P� �p��P�*M���] �|���9�"9�-�9��;(s�S����� ��� �WN ��DD b"""��5B����Ep���:����zi6�ڕ�����x���X &�I�+�(���� x}�$��A���4 i��9C�i� .S��9NV80D4�!\��4m) ��0�A0P"�8�C(\0�f�H>�X`���A �!C�)L���A��ti>�H����l�H9��?�A Atoms in metals and their alloys are arranged in Elements are classified broadly into two categories on the basis of properties: Metals… " c�r(� �!�2�c]&�p�S)�D6rP� `r��9�C0�&���>�H8�o���� A�vmv�M�Cf�!�u1�>�6���+j�&ɐ�VA����{z`�@�����&� ���7qV�JC�A6\��>��80Z=4�j�ch!���H9[�R �6�L��)(�a� sA"��&��i$e���!�XP� �8)� ��$]�� A��&!A�r���$!��!�A�V�6�H�D1LAa;���#% �* �r��z[� a## 7#� P+��~ Y?a classification in 1883 and Brezina’s modification of the Tshermak-Rose classification scheme (see Prior, 1920). D.�A}��� ���|R�#��.�!7Q�N�}H� &�A�z[Z4�� PoV�HPgs���"��������a ��7j���lIu2Ĥ4�Hi�R��t���$Q�&@Ő.�.��>����'V�A�bBS��aNP�$8�pA�h��BbBTi0i��x7D"����̖����<2���:s%@<2� �� xhA�,r�UN�0�d 1. Physical Properties of Metals: (a) Malleability: It is that property of metals which allows them to be beaten into the thin sheets. $h遆@�@(5L&x�4�u`�2������hl[{��~=�`"U���'4�Z^�,f��綦�f���r����%�1a1� CLASSIFICATION OF MATERIALS. The most common contaminants of heavy metal are Cd, Cr, Hg, Pb, Cu, Zn, and As. Metal Classification - Deciphering the Codes Introduction. Based on the ability of various materials to conduct current, the materials are classified as conductors, insulators and the semiconductors. The metal is subjected to stress.It is a process of changing the shape and size of the material under the influence of external force or stress.Plastic Deformation occurs. 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