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<p>[QUOTE=&quot;CappedBustDimes, post: 291800, member: 9104&quot;]it has not yet been made public as the&nbsp; mint has not agreed upon a cost effective alloy to replace nickel.&nbsp; their current choice is a synthetic plasticizer that contains petroleum derivatives, which is counter intuitive for a nation trying to appear as if they are&nbsp; trying liberate themselves from black gold.</p><p><br /></p><p>below is the comp. data for current&nbsp; and past nickel alloys used by the us mint.</p><p>&nbsp;&nbsp;&nbsp; </p><p><br /></p><p>Cupro-Nickel&nbsp; &nbsp;&nbsp; Cu-Ni-Sn&nbsp; &nbsp;&nbsp; Nickel Silver</p><p>[edit for copyright and patents] Alloy</p><p><br /></p><p>ASTM Spec</p><p><br /></p><p>MSDS</p><p>&nbsp;&nbsp;&nbsp; 706</p><p><br /></p><p>B122</p><p><br /></p><p>&nbsp;&nbsp;&nbsp; 715</p><p><br /></p><p>B122</p><p><br /></p><p>&nbsp;&nbsp;&nbsp; 725</p><p><br /></p><p>B122</p><p><br /></p><p>&nbsp;&nbsp;&nbsp; 752</p><p><br /></p><p>B122</p><p><br /></p><p>&nbsp;&nbsp;&nbsp; 762</p><p><br /></p><p>B122</p><p><br /></p><p>&nbsp;&nbsp;&nbsp; 770</p><p><br /></p><p>B122</p><p><br /></p><p>&nbsp;CHEMISTRY</p><p>&nbsp;Copper Cu&nbsp; &nbsp; &nbsp; 88.6&nbsp; &nbsp; &nbsp; 69.5&nbsp; &nbsp; &nbsp; 88.2&nbsp; &nbsp; &nbsp; 65&nbsp; &nbsp; &nbsp; 59&nbsp; &nbsp; &nbsp; 55</p><p>&nbsp;Oxygen O&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </p><p>&nbsp;Zinc Zn&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 17&nbsp; &nbsp; &nbsp; 29&nbsp; &nbsp; &nbsp; 27</p><p>&nbsp;Tin Sn&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.3&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </p><p>&nbsp;Nickel Ni&nbsp; &nbsp; &nbsp; 10&nbsp; &nbsp; &nbsp; 30&nbsp; &nbsp; &nbsp; 9.5&nbsp; &nbsp; &nbsp; 18&nbsp; &nbsp; &nbsp; 12&nbsp; &nbsp; &nbsp; 18</p><p>&nbsp;Iron Fe&nbsp; &nbsp; &nbsp; 1.4&nbsp; &nbsp; &nbsp; 0.5&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </p><p>&nbsp;Phosphorus P&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </p><p>&nbsp;Aluminum Al&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </p><p>&nbsp;PHYSICAL PROPERTIES</p><p>&nbsp;Trade Name&nbsp; &nbsp; &nbsp; Copper Nickel 10%&nbsp; &nbsp; &nbsp; Copper Nickel 30%&nbsp; &nbsp; &nbsp; Copper Nickel Tin&nbsp; &nbsp; &nbsp; Nickel Silver 65-18&nbsp; &nbsp; &nbsp; Nickel Silver 59-12&nbsp; &nbsp; &nbsp; Nickel Silver 55-18</p><p>&nbsp;Density (lb/cu. in. @ 68 d. F)&nbsp; &nbsp; &nbsp; .323&nbsp; &nbsp; &nbsp; .323&nbsp; &nbsp; &nbsp; .321&nbsp; &nbsp; &nbsp; .316&nbsp; &nbsp; &nbsp; .310&nbsp; &nbsp; &nbsp; .314</p><p>&nbsp;Modulus of Elasticity (x 1000 ksi (106 psi))&nbsp; &nbsp; &nbsp; 18&nbsp; &nbsp; &nbsp; 22&nbsp; &nbsp; &nbsp; 20&nbsp; &nbsp; &nbsp; 18&nbsp; &nbsp; &nbsp; 18&nbsp; &nbsp; &nbsp; 18</p><p>&nbsp;Electrical Conductivity (% I.A.C.S. @ 68 d. F (Annealed))&nbsp; &nbsp; &nbsp; 9&nbsp; &nbsp; &nbsp; 4.6&nbsp; &nbsp; &nbsp; 11&nbsp; &nbsp; &nbsp; 6&nbsp; &nbsp; &nbsp; 9&nbsp; &nbsp; &nbsp; 5.5</p><p>&nbsp;Thermal Conductivity (Btu/sq.ft./ft/hr./ d. F @ 68 d. F)&nbsp; &nbsp; &nbsp; 26&nbsp; &nbsp; &nbsp; 17&nbsp; &nbsp; &nbsp; 31&nbsp; &nbsp; &nbsp; 19&nbsp; &nbsp; &nbsp; 24&nbsp; &nbsp; &nbsp; 17</p><p>&nbsp;Coef. of Thermal Expansion (x 106 in./in./ d. F (68 d. to 572 d. F)&nbsp; &nbsp; &nbsp; 9.5&nbsp; &nbsp; &nbsp; 9.0&nbsp; &nbsp; &nbsp; 9.2&nbsp; &nbsp; &nbsp; 9.0&nbsp; &nbsp; &nbsp; 9.0&nbsp; &nbsp; &nbsp; 9.3</p><p>TENSILE STRENGTH x Ksi (Kgf/mm2 = KSI x .7031)</p><p>&nbsp;Annealed (S0XX)&nbsp; &nbsp; &nbsp; 43-50&nbsp; &nbsp;&nbsp; 52 Min.&nbsp; &nbsp;&nbsp; 45-65&nbsp; &nbsp; &nbsp; 53-63&nbsp; &nbsp; &nbsp; 57-75&nbsp; &nbsp; &nbsp; 61-76</p><p>&nbsp;1/4 Hard (H01)&nbsp; &nbsp; &nbsp; 51-67&nbsp; &nbsp;&nbsp; 58-72&nbsp; &nbsp;&nbsp; 55-75&nbsp; &nbsp; &nbsp; 58-72&nbsp; &nbsp; &nbsp; 65-81&nbsp; &nbsp; &nbsp; 69-87</p><p>&nbsp;1/2 Hard (H02)&nbsp; &nbsp; &nbsp; 58-72&nbsp; &nbsp;&nbsp; 66-80&nbsp; &nbsp;&nbsp; 65-80&nbsp; &nbsp; &nbsp; 66-80&nbsp; &nbsp; &nbsp; 75-91&nbsp; &nbsp; &nbsp; 78-95</p><p>&nbsp;3/4 Hard (H03)&nbsp; &nbsp; &nbsp; -&nbsp; &nbsp; &nbsp; -&nbsp; &nbsp;&nbsp; -&nbsp; &nbsp; &nbsp; 74-86&nbsp; &nbsp; &nbsp; 83-98&nbsp; &nbsp; &nbsp; 88-101</p><p>&nbsp;HARD (H04)&nbsp; &nbsp; &nbsp; 71-83&nbsp; &nbsp;&nbsp; 75-88&nbsp; &nbsp;&nbsp; 75-90&nbsp; &nbsp; &nbsp; 78-91&nbsp; &nbsp; &nbsp; 90-105&nbsp; &nbsp; &nbsp; 92-109</p><p>&nbsp;Extra Hard (H06)&nbsp; &nbsp; &nbsp; 73-85&nbsp; &nbsp;&nbsp; 80-92&nbsp; &nbsp;&nbsp; 80-95&nbsp; &nbsp; &nbsp; 86-98&nbsp; &nbsp; &nbsp; 99-114&nbsp; &nbsp; &nbsp; 102-117</p><p>&nbsp;Spring (H08)&nbsp; &nbsp; &nbsp; 78-88&nbsp; &nbsp;&nbsp; 84-94&nbsp; &nbsp;&nbsp; 85-100&nbsp; &nbsp; &nbsp; 90-101&nbsp; &nbsp; &nbsp; 107-122&nbsp; &nbsp; &nbsp; 108-123</p><p>&nbsp;Extra Spring (H10)&nbsp; &nbsp; &nbsp; -&nbsp; &nbsp;&nbsp; -&nbsp; &nbsp;&nbsp; 90-105&nbsp; &nbsp; &nbsp; 96 Min.&nbsp; &nbsp; &nbsp; 114 Min.&nbsp; &nbsp; &nbsp; 116 Min.</p><p>&nbsp;YIELD STRENGTH x Ksi (Nominal 0.2% offset) (Kgf/mm2 = KSI x .7031)</p><p>&nbsp;Annealed (S0XX)&nbsp; &nbsp; &nbsp; 19&nbsp; &nbsp;&nbsp; 28&nbsp; &nbsp;&nbsp; 21&nbsp; &nbsp; &nbsp; 25&nbsp; &nbsp; &nbsp; 36&nbsp; &nbsp; &nbsp; 32</p><p>&nbsp;1/4 Hard (H01)&nbsp; &nbsp; &nbsp; 53&nbsp; &nbsp;&nbsp; 47&nbsp; &nbsp;&nbsp; 73 Max&nbsp; &nbsp; &nbsp; 45&nbsp; &nbsp; &nbsp; 52&nbsp; &nbsp; &nbsp; 63</p><p>&nbsp;1/2 Hard (H02)&nbsp; &nbsp; &nbsp; 63&nbsp; &nbsp;&nbsp; 68&nbsp; &nbsp;&nbsp; 68&nbsp; &nbsp; &nbsp; 63&nbsp; &nbsp; &nbsp; 70&nbsp; &nbsp; &nbsp; 78</p><p>&nbsp;3/4 Hard (H03)&nbsp; &nbsp; &nbsp; -&nbsp; &nbsp; &nbsp; -&nbsp; &nbsp; &nbsp; -&nbsp; &nbsp; &nbsp; 75&nbsp; &nbsp; &nbsp; 82&nbsp; &nbsp; &nbsp; 92</p><p>&nbsp;HARD (H04)&nbsp; &nbsp; &nbsp; 75&nbsp; &nbsp;&nbsp; 78&nbsp; &nbsp;&nbsp; 80&nbsp; &nbsp; &nbsp; 82&nbsp; &nbsp; &nbsp; 89&nbsp; &nbsp; &nbsp; 98</p><p>&nbsp;Extra Hard (H06)&nbsp; &nbsp; &nbsp; 76&nbsp; &nbsp;&nbsp; 83&nbsp; &nbsp;&nbsp; 85&nbsp; &nbsp; &nbsp; 91&nbsp; &nbsp; &nbsp; 98&nbsp; &nbsp; &nbsp; 107</p><p>&nbsp;Spring (H08)&nbsp; &nbsp; &nbsp; 76 Min.&nbsp; &nbsp;&nbsp; 86&nbsp; &nbsp;&nbsp; 90&nbsp; &nbsp; &nbsp; 93&nbsp; &nbsp; &nbsp; 105&nbsp; &nbsp; &nbsp; 112</p><p>&nbsp;Extra Spring (H10)&nbsp; &nbsp; &nbsp; -&nbsp; &nbsp; &nbsp;&nbsp; -&nbsp; &nbsp;&nbsp; 95&nbsp; &nbsp; &nbsp; 95 Min.&nbsp; &nbsp; &nbsp; 102 Min.&nbsp; &nbsp; &nbsp; 115 Min.</p><p>&nbsp;ELONGATION (% in 2 inches)</p><p>&nbsp;Annealed (S0XX)&nbsp; &nbsp; &nbsp; 35&nbsp; &nbsp;&nbsp; 30 Min.&nbsp; &nbsp;&nbsp; 35&nbsp; &nbsp; &nbsp; 35&nbsp; &nbsp; &nbsp; 40&nbsp; &nbsp; &nbsp; 43</p><p>&nbsp;1/4 Hard (H01)&nbsp; &nbsp; &nbsp; 12&nbsp; &nbsp;&nbsp; 17&nbsp; &nbsp;&nbsp; 5&nbsp; &nbsp; &nbsp; 24&nbsp; &nbsp; &nbsp; 35&nbsp; &nbsp; &nbsp; 26</p><p>&nbsp;1/2 Hard (H02)&nbsp; &nbsp; &nbsp; 5&nbsp; &nbsp;&nbsp; 6&nbsp; &nbsp;&nbsp; 10&nbsp; &nbsp; &nbsp; 14&nbsp; &nbsp; &nbsp; 18&nbsp; &nbsp; &nbsp; 14</p><p>&nbsp;3/4 Hard (H03)&nbsp; &nbsp; &nbsp; -&nbsp; &nbsp; &nbsp;&nbsp; -&nbsp; &nbsp; &nbsp;&nbsp; -&nbsp; &nbsp; &nbsp; 8&nbsp; &nbsp; &nbsp; 10&nbsp; &nbsp; &nbsp; 8</p><p>&nbsp;HARD (H04)&nbsp; &nbsp; &nbsp; 1 Min.&nbsp; &nbsp;&nbsp; 3&nbsp; &nbsp;&nbsp; 3&nbsp; &nbsp; &nbsp; 5&nbsp; &nbsp; &nbsp; 4&nbsp; &nbsp; &nbsp; 4</p><p>&nbsp;Extra Hard (H06)&nbsp; &nbsp; &nbsp; 1 Min.&nbsp; &nbsp;&nbsp; 2&nbsp; &nbsp;&nbsp; 2&nbsp; &nbsp; &nbsp; 3&nbsp; &nbsp; &nbsp; 2&nbsp; &nbsp; &nbsp; 1 Min.</p><p>&nbsp;Spring (H08)&nbsp; &nbsp; &nbsp; 1 Max&nbsp; &nbsp;&nbsp; 1 Min.&nbsp; &nbsp;&nbsp; 1 Min.&nbsp; &nbsp; &nbsp; 2&nbsp; &nbsp; &nbsp; 1 Max.&nbsp; &nbsp; &nbsp; 1 Max.</p><p>&nbsp;Extra Spring (H10)&nbsp; &nbsp; &nbsp; -&nbsp; &nbsp; &nbsp;&nbsp; -&nbsp; &nbsp;&nbsp; 1 Max.&nbsp; &nbsp; &nbsp; 1&nbsp; &nbsp; &nbsp; 1 Max.&nbsp; &nbsp; &nbsp; 1 Max.</p><p>&nbsp;HARDNESS Rockwell values, scale as noted, (* = HRF = HR30T) .020 inches thick and over</p><p>&nbsp;Annealed (S0XX)&nbsp; &nbsp; &nbsp; 75*&nbsp; &nbsp;&nbsp; 83*&nbsp; &nbsp;&nbsp; 50 Max.&nbsp; &nbsp; &nbsp; 85*&nbsp; &nbsp; &nbsp; 90*&nbsp; &nbsp; &nbsp; 87</p><p>&nbsp;1/4 Hard (H01)&nbsp; &nbsp; &nbsp; 64&nbsp; &nbsp;&nbsp; 74&nbsp; &nbsp;&nbsp; 85 Max.&nbsp; &nbsp; &nbsp; 62&nbsp; &nbsp; &nbsp; 73&nbsp; &nbsp; &nbsp; 75</p><p>&nbsp;1/2 Hard (H02)&nbsp; &nbsp; &nbsp; 73&nbsp; &nbsp;&nbsp; 80&nbsp; &nbsp;&nbsp; 80&nbsp; &nbsp; &nbsp; 75&nbsp; &nbsp; &nbsp; 84&nbsp; &nbsp; &nbsp; 86</p><p>&nbsp;3/4 Hard (H03)&nbsp; &nbsp; &nbsp; -&nbsp; &nbsp; &nbsp;&nbsp; -&nbsp; &nbsp;&nbsp; -&nbsp; &nbsp; &nbsp; 81&nbsp; &nbsp; &nbsp; 88&nbsp; &nbsp; &nbsp; 90</p><p>&nbsp;HARD (H04)&nbsp; &nbsp; &nbsp; 81&nbsp; &nbsp;&nbsp; 86&nbsp; &nbsp;&nbsp; 82&nbsp; &nbsp; &nbsp; 85&nbsp; &nbsp; &nbsp; 92&nbsp; &nbsp; &nbsp; 93</p><p>&nbsp;Extra Hard (H06)&nbsp; &nbsp; &nbsp; 84&nbsp; &nbsp;&nbsp; 88&nbsp; &nbsp;&nbsp; 87&nbsp; &nbsp; &nbsp; 90&nbsp; &nbsp; &nbsp; 96&nbsp; &nbsp; &nbsp; 97</p><p>&nbsp;Spring (H08)&nbsp; &nbsp; &nbsp; 87&nbsp; &nbsp;&nbsp; 89&nbsp; &nbsp;&nbsp; 90&nbsp; &nbsp; &nbsp; 92&nbsp; &nbsp; &nbsp; 98&nbsp; &nbsp; &nbsp; 98</p><p>&nbsp;Extra Spring (H10)&nbsp; &nbsp; &nbsp; -&nbsp; &nbsp;&nbsp; -&nbsp; &nbsp;&nbsp; 91&nbsp; &nbsp; &nbsp; 92 Min.&nbsp; &nbsp; &nbsp; 98 Min.&nbsp; &nbsp; &nbsp; 98 Min.[/QUOTE]</p><p><br /></p>

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