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Melting Point and Weights of Various Metals and Alloys

Metal	Symbol	Melting Point ºF	Melting Point ºC	Specific Gravity	Weight in Troy Ozs/Cu In
Aluminum	Al	1220	660	2.70	1.423
Antimony	Sb	1167	630	6.62	3.448
Beryllium	Be	2340	1280	1.82	0.959
Bismuth	Bi	520	271	9.80	5.163
Cadmium	Cd	610	321	8.65	4.557
Carbon	C	-	-	2.22	1.170
Chromium	Cr	3430	1890	7.19	3.788
Cobalt	Co	2723	1495	8.90	8.900
Copper	Cu	1981	1083	8.96	4.719
Gold, 24K Pure	Au	1945	1063	19.32	10.180
Iridium	Ir	4449	2454	22.50	11.849
Iron	Fe	2802	1539	7.87	4.145
Lead	Pb	621	327	11.34	5.973
Magnesium	Mg	1202	650	1.75	0.917
Manganese	Mn	2273	1245	7.43	3.914
Molybdenum	Mo	4760	2625	10.20	5.347
Nickel	Ni	2651	1455	8.90	4.691
Osmium	Os	4892	2700	22.50	11.854
Palladium	Pd	2831	1555	12.00	6.322
Phosphorus	P	111	44	1.82	0.959
Platinum, Pure	Pt	3224	1773	21.45	11.301
15% Irid Plat	-	3310	1821	21.59	11.301
10% Irid Plat	-	3250	1788	21.54	11.349
5% Irid Plat	-	3235	1779	21.50	11.325
Rhodium	Rh	3571	1966	12.44	6.553
Ruthenium	Ru	4500	2500	12.20	6.428
Silicon	Si	2605	1430	2.33	1.247
Silver, Pure	Ag	1761	961	10.49	5.525
Silver, Sterling	-	1640	893	10.36	5.457
Silver, Coin	-	1615	879	10.31	5.430
Tin	Sn	450	232	7.30	3.846
Zinc	Zn	787	419	7.10	3.7758

Pennyweight to Ounces to Grams

DWT	OUNCE	GRAM	DWT	OUNCE	GRAM
10	0.5	15.550	340	17	528.760
20	1	31.104	350	17.5	544.311
30	1.5	46.655	360	18	559.863
40	2	62.207	370	18.5	575.415
50	2.5	77.759	380	19	590.967
60	3	93.311	390	19.5	606.518
70	3.5	108.862	400	20	622.070
80	4	124.414	410	20.5	637.623
90	4.5	139.966	420	21	653.174
100	5	155.518	430	21.5	668.725
110	5.5	171.069	440	22	684.277
120	6	186.621	450	22.5	699.829
130	6.5	202.173	460	23	715.381
140	7	217.725	470	23.5	730.932
150	7.5	233.276	480	24	746.484
160	8	248.828	490	24.5	762.036
170	8.5	264.380	500	25	777.588
180	9	279.932	510	25.5	793.139
190	9.5	295.483	520	26	808.691
200	10	311.035	530	26.5	824.243
210	10.5	326.587	540	27	839.795
220	11	342.139	550	27.5	855.346
230	11.5	357.690	560	28	870.898
240	12	373.242	570	28.5	886.450
250	12.5	388.794	580	29	902.002
260	13	404.346	590	29.5	917.553
270	13.5	419.897	600	30	933.105
280	14	435.449	610	30.5	948.657
290	14.5	451.001	620	31	964.209
300	15	466.553	630	31.5	979.760
310	15.5	482.104	640	32	995.312
320	16	497.656	650	32.5	1010.864
330	16.5	513.208	660	33	1026.300

Gauge to Inches to Millimeters

B & S Gauge	Inch (Decimal)	Millimeter (mm)	Inch (Fraction)	B & S Gauge	Inch (Decimal)	Millimeter (mm)	Inch (Fraction)
1	0.289	7.348	.	17	0.045	1.149	.
2	0.258	6.543	.	18	0.040	1.024	.
.	0.250	6.350	1/4	19	0.036	0.912	.
.	0.234	5.953	15/64	20	0.032	0.812	.
3	0.229	5.827	.	.	0.031	0.795	1/32
.	0.219	5.556	7/32	21	0.028	0.723	.
4	0.204	5.189	.	22	0.025	0.644	.
.	0.203	5.154	11/64	23	0.023	0.573	.
.	0.188	4.762	3/16	24	0.020	0.511	.
5	0.182	4.621	.	25	0.018	0.455	.
.	0.172	4.366	11/64	26	0.016	0.405	.
6	0.162	4.115	.	.	0.016	0.396	1/64
.	0.156	3.969	5/32	27	0.014	0.360	.
7	0.144	3.664	.	28	0.013	0.321	.
.	0.141	3.572	9/64	29	0.011	0.286	.
8	0.128	3.263	.	30	0.010	0.255	.
.	0.125	3.175	1/8	31	0.0089	0.226	.
9	0.114	2.906	.	32	0.0080	0.200	.
.	0.109	2.778	7/64	33	0.0071	0.180	.
10	0.102	2.588	.	34	0.0063	0.160	.
.	0.094	2.381	3/32	35	0.0056	0.142	.
11	0.091	2.304	.	36	0.0050	0.130	.
12	0.081	2.052	.	37	0.0045	0.114	.
.	0.078	1.984	5/64	38	0.0040	0.100	.
13	0.072	1.828	.	.	.	.	.
14	0.064	1.628	.	.	.	.	.
.	0.063	1.588	1/16	.	.	.	.
15	0.057	1.449	.	.	.	.	.
16	0.051	1.291	.	.	.	.	.
.	0.047	1.191	3/64	.	.	.

To find the weight of an article in a metal different from that in which it is now made:
1.Find the present metal in the first vertical column.
2.Multiply the present weight by the factor in the same horizontal row under the new metal.
Example: A sterling silver ring weighs 8 grams, what will it weigh in 14kt.?
3.Along the horizontal row marked Stg in the first column under the heading 14 Kt we find 1.25 x 8 = 10 grams, weight in 14 Kt.

Weight Comparison Chart

	Pt.	F.G.	22kt	18kt	14kt	10kt	9kt	F.S.	Stg
Pt.	1.00	0.90	0.82	0.70	0.60	0.53	0.53	0.49	0.48
F.G.	1.11	1.00	0.91	0.78	0.67	0.59	0.58	0.54	0.54
22kt	1.22	1.10	1.00	0.86	0.73	0.65	0.65	0.60	0.59
18kt	1.42	1.28	1.16	1.00	0.85	0.76	0.75	0.69	0.68
14kt	1.66	1.50	1.36	1.17	1.00	0.89	0.88	0.81	0.80
10kt	1.88	1.69	1.54	1.32	1.13	1.00	0.99	0.92	0.90
9kt	1.90	1.71	1.56	1.34	1.14	1.01	1.00	0.93	0.92
F.S.	2.04	1.84	1.68	1.44	1.23	1.09	1.08	1.00	0.99
Stg	2.07	1.87	1.70	1.46	1.25	1.11	1.09	1.01	1.00

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