ASTM E 351:2025

1.1 These test methods cover the chemical analysis of pig iron, gray cast iron (including alloy and austenitic), white cast iron, malleable cast iron, and ductile (nodular) iron having chemical compositions within the following limits: Element Composition Range, % Aluminum 0.003 to 0.50 Antimony 0.005 to 0.03 Arsenic 0.02 to 0.10 Bismuth 0.001 to 0.03 Boron 0.001 to 0.10 Cadmium 0.001 to 0.005 Carbon 1.25 to 4.50 Cerium 0.005 to 0.05 Chromium 0.01 to 30.00 Cobalt 0.01 to 4.50 Copper 0.03 to 7.50 Lead 0.001 to 0.15 Magnesium 0.002 to 0.10 Manganese 0.06 to 2.50 Molybdenum 0.01 to 5.00 Nickel 0.01 to 36.00 Phosphorus 0.01 to 0.90 Selenium 0.001 to 0.06 Silicon 0.10 to 6.0 Sulfur 0.005 to 0.25 Tellurium 0.001 to 0.35 Tin 0.001 to 0.35 Titanium 0.001 to 0.20 Tungsten 0.001 to 0.20 Vanadium 0.005 to 0.50 Zinc 0.005 to 0.20 1.2 The test methods in this standard are contained in the sections indicated below: Sections Carbon, Graphitic, by the Direct Combustion Infrared Absorption Method (1 % to 3 %) 108-115 Carbon, Total by the Combustion Gravimetric Method (1.25 % to 4.50 %)- Discontinued 2012 97-107 Cerium and Lanthanum by the Direct Current Plasma Atomic Emission Spectrometry Method (Ce: 0.003 % to 0.5 %; La: 0.001 % to 0.30 %) 237-245 Chromium by the Atomic Absorption Method (0.006 % to 1.00 %) 208-217 Chromium by the Peroxydisulfate Oxidation-Titration Method (0.05 % to 30.0 %) 218-226 Chromium by the Peroxydisulfate-Oxidation Titrimetric Method (0.05 % to 30.0 %)- Discontinued 1980 144-151 Cobalt by the Ion-Exchange-Potentiometric Titration Method (2.0 % to 4.5 %) 53-60 Cobalt by the Nitroso-R-Salt Spectrophotometric Method (0.01 % to 4.50 %) 61-70 Copper by the Neocuproine Spectrophotometric Method (0.03 % to 7.5 %) 116-125 Copper by the Sulfide Precipitation-Electrodeposition Gravimetric Method (0.03 % to 7.5 %) 81-88 Lead by the Ion-Exchange-Atomic Absorption Spectrometry Method (0.001 % to 0.15 %) 126-135 Magnesium by the Atomic Absorption Spectrometry Method (0.002 % to 0.10 %) 71-80 Manganese by the Periodate Spectrophotometric Method (0.10 % to 2.00 %) 9-18 Manganese by the Peroxydisulfate-Arsenite Titrimetric Method (0.10 % to 3.5 %) 152-159 Molybdenum by the Ion Exchange-8-Hydroxyquinoline Gravimetric Method 257-264 Molybdenum by the Thiocyanate Spectrophotometric Method (0.01 % to 1.5 %) 196-207 Nickel by the Dimethylglyoxime Gravimetric Method (0.1 % to 36.00 %) 168-175 Nickel by the Ion Exchange-Atomic Absorption Spectrometry Method (0.005 % to 1.00 %) 176-185 Phosphorus by the Alkalimetric Method (0.02 % to 0.90 %) 160-167 Phosphorus by the Molybdenum Blue Spectrophotometric Method (0.02 % to 0.90 %) 19-30 Silicon by the Gravimetric Method (0.1 % to 6.0 %) 46-52 Sulfur by the Gravimetric Method- Discontinued 1988 30-36 ...

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