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Is 228 (Part1) -Methods for Chemical Analysis of Steels_determination of Carbon by Volumetric Method | Combustion | Steel
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MTD4(4855) is8910
Is 228 part 9
BS 1400-1985 Specfication for Copper Alloy Ingots and Copper Alloy and High Conductivity Copper Castings
228_17
UDC 66914
: 643.24 [ 543.642 ]
Reprint NOVEMBER
IS : 228 ( Part 1 ) - 1987
( Reaffirmed 2002 ) iReafiimlad 1997)
PART 1 DETERMINATION
BY VOLUMETRIC )
( FOR CARBON (
005 TO 250 PERCENT
Third ReviCon )
1. Scope - This standard (Part 1 ) covers volumetric method for determination range 005 to 250 percent in plain carbon, low alloy and high alloys steels. 2. Determination of Carbon
2.1 Outline of the Method-The sample is burnt in a current of pure oxygen in presence of a suitable flux. Combustion of the sample in a stream of oxygen, thus converts all the carbon present to carbon dioxide. After removal of sulphurous gases by suitable absorbents, the carbon dioxide gas is collected in a specially jacketed burette along with excess of oxygen. The carbon dioxide is then absorbed in alkali. On passing the excess oxygen back to the burrette, the contraction in volume is read against a scale, calibrated directly to the percentage of carbon. sample shall be drawn as prescribed in the relevant Indian Standard. (The 3. Sampling -The sample is cleaned with organic solvent like ether or acetone, dried in an air oven at 100 & 5C before use. ) Recommendations for 4. Apparatus - The apparatus recommended in IS : 6226 (Part l )-1971 apparatus for chemical analysis of metals : Part 1 Determination of carbon by direct combustion method may be used. 6. Procedure 5.1 Before use the apparatus should appropriate values of carbon. be tested for satisfactory working against standard steel of
5.2 For Plain Carbon SteelTake one gram of an accurately weighed and clean sample free from extraneous carbon in the form of small drillings or shavings in a porcelain boat which can withstand a temperature of 1 150C without breaking or cracking. 5.2.1 1 100C. Introduce the boat into the hot combustion tube in the furnace kept at 1000 ta
5.3 For Low Alloy and High Alloy Steels-Take one gram of an accurately weighed and clean sample free from extraneous carbon in the form of small drillings or shavings in a porcelain boat, which can stand a temperature of 1 250C without breaking and cracking. Spread 05 g of pure In case of high alloy steel mix the sample with 05 g of pure iron Lin granules over the sample. (9999 percent) filings also. Introduce the boat into the hot combustion tube in the furnace, cept between 1 150 to 1 250C. 5.4 Close the furnace inlet with a rubber stopper, allow the sample to heat for one to one and a half Regulate the flow Of oxygen to 300-400 ml per minute into the furnace and establish ninute. connection with the burette, which has been previously filled with acidulated water/brine water :oloured with methyl red, so that the liquid level in the bulbed portion of the gas burette does not fall rapidly. After a minute or SO the level of water in the burette begins to fall more rapidly, though the same rate of oxygen is maintained, indicating completion of combustion. 5.5 Take readings, when the level reaches near the zero graduation mark after closing the bend way ;topcock and equalizing the levels Of the burette and the connected levelling bottle. Pass the 1988, BIS I OF
Adopted 4 December 1987 I BUREAU
9 EAHADUR SHAH ZAFAR NEW DELHI 110002
Record collected and measured gas twice into the absorbing bulb, till constant reading is obtained. On the basis of one gram of sample taken For analysis, the burette is graduated the burette reading. to measure directly the percentsge of carbon. 6.5.1 Examine the combustion boat for complete repeat the determination with a fresh sample. 5.6 Blank - Run a blank experiment and make the appropriate corrections. 5.7 Calculation Carbon, where A = burette reading after absorption sample, B = burette of carbon dioxide and ( see Table I ). and
if not thoroughly
used, without
8 ) x F in caustic potash with one gram of
reading for the blank experiment, factor for temperature percent
F = Correction 5.8 Reproducibility&OOl
up to 150 percent carbon,
&-002 percent above 150 percent carbon.
INDIAN IS : 228 STANDARDS Methods (Part ( Part ( Part ( Part ( Part ( Part ( Part ( Part ON METHODS
ANALYSIS OF STEELS
analysis of steels: in plain carbon and by alkalimetric low alloy steels by (third revision ) 3 0.1,
Determination of manganese 2 )-I987 arsenite method ( third revision ) 3 )-I 987 Determination of phosphorus
4)-1987 Determination of carbon percent ) ( third revision )
by gravimetric
5 )-I 987 Determination of nickel by dimethylglyoxime ( for nickel Z 01 percent ) ( third revision) 6 )-I 987 Determination of chromium by persulphate chromium > 01 percent ) (third revision )
( gravimetric oxidation
) method ( for (for silicon method
method method (for
7)-1974 Determination of molybdenum by a-benzoinoxime molybdenum > 1 percent ) ( second revision) 8)-1975 Determination of silicon by > 01 percent) (second revision) 9)-1975 Determination (second revision ) of sulphur the gravimetric method
steels by dvolution
( Part lo)-1976 Determination of molybdenum (for molybdenum up to 1 percent) revision )
by thiocyanate (photometric ) method in low and high alloy steels (second
( Part 11 )-I976 Determination of silicon by photometric method in carbon steels and low alloy steels ( for silicon 001 to 005 percent ) ( second revision ) ( Part 12 )-1988 Determination of manganese by periodate method in low and high alloy steels (for manganese cent ) (second revision ) ( Part 13)-l 982 Determination of arsenic conductivity method (for carbon (spectrophotometric ) up to 001 to 200 per-
(Part 14 )-I987 Determination of carbon by thermal 0005 to 2000 percent )
CORhECTlON ( Clause 5.7 )
Pressure, \ mm Hg Temperature, C -_.-_ (1) 15 16 17 18 19 20 21 22 23 24 25 26 27 29 30 31 :f 34 35 3376 33: Z? 42 43 44 45 (2) 0.964 0.960 0955 0951 0.946 0942 0.937 0.932 0.927 0.922 0.918 0913 0.908 0.903 0.897 0.892 0.887 0.882 0.876 0.870 0.865 0.859 0.853 0.847 0.841 0.835 0828 0.822 0.815 0.808 0.801 (3) 0.967 0.962 0958 0.953 0949 0.944 0.940 0.935 0930 0.925 0.920 0915 0.910 0905 0*900 0.895 0.889 0.884 0.878 0.873 0.867 0.861 0.856 0.850 0,843 0,837 0.831 0824 0818 0.811 0.804 (4) 0.970 0.965 0961 0,966 0962 0,947 0.942 0.937 0.933 0.928 0.923 0,918 0.913 0.908 0.903 0.897 0892 0.886 0.881 0.875 0.870 0.864 0.858 0.852 0846 0.840 0.833 0.827 0.820 0813 0.806 (5) 0,972 0.968 0.963 0959 0.954 0950 0945 0.940 0.936 0.930 0.925
(6) 0.975 0.970 0966 0.961 0.957 0.952 0947 0.943 0.938 0.933
(7) 0.978 0.973 0969 0.964 0.959 0.955 0.950 0.945 0.940 0.936
0.931 0.926 0.921
(8) 0.960 0.976 0.971 0967 0962 0.957 0.953 0.948 0.943 0.938
0.933 0.928 0923 0.918
(9) 0.983 0978 0.974 0969 0.965 0960 0.955 0950 0.946 0.941
0936 0.931 0.926
(10) 0.986 0.981 0.977 0.972 0.967 0963 0.958 0.953 0.948 0.943 0938
0.933 0.928 0,923 0.918
(11) 0.988 0,984 0.979 0.975 0.970 0,965 0.961 0.956 0.951 0.946 0.941 0936 0.931 0.926 0.920 0915 0,,910 0.904 0.899 0.893 0.887 0.682 0.876 0.869 0.863 0857 0.850 0,844 0.837 0.830 0.823
(12) 0.991 0.987 0.982 0.977 0.973 0.968 0.963 0.958 0.954 0949 0.944 0.939
0.934 0.928 0923
(13) 0.994 0.989 0.985 0.980 0.975 0.971 0.966 0.961 0,956 0.951 0.946
0.941 0.936
(14) 0.996 0,992 0.987 0.983 0.978 0.973 0.968 0.964 0.959 0.954 0,949
(15) 0.999 0.995 0.990 0.985 0.981 0976 0.971 0.966 0.961 0.956 0.951 0.946 0.941 0.936 0.931 0925 0 920 0.914 0*909 0.903 0.897 0.892 0886 0,879 0.873 0867 0.860 0.854 0847 0.840 0.833
(16) I.002 0.997 0.993 0.988 0.983 0.978 0974 0.969 0.964 0.959
0954 0949 0944 0939
(17) 1.005 I.000 0.996 0.991 0986 0981 0.976 0.972 0.967 0.962
0.957 0.952 0946
(18) I.007 I.003 0.998 0993 0989 0.984 0.979 0.974 0969 0964 0959
0.954 0.949
(19) 1010 1.005 I.001 0.996 0.991 0.986 0982 0977 0972 0.967 0.962 0957 0952
(20) 1013 1008 l-003 0.999 0.994 0.989 0.984 0.979 0.974 0967 0964
(21) 1015 1.011 1.006 I.001 0.996 0.992 0.987 0.982 0977 0.972 0.967
0.962 0957 0952
1018 1013 1009 1004 0999 0.994 0990 0.985 0.980 0.975 0970 0.964 0959 0954 0.949 0943 0938 0.932 0.927 0.921 0915 0.909 0903 0.897 0.890 0.884 0878 0870 0.864 0857 0850
0915 0.910 0.905 0.900 0894 0889 0.884 0.878 0.872 0.866 0.860 0.854 0.848 0.842 0.836 0.829 0822 0816 0,809
0.913 0.908 0,902 0897 O-892 0.886 0.880 0.875 0.869 0.863 0.857 0.851 0.844 0.838 0832 0.825 0.818 0.811
0.916 0.910 0.905 0.900 0.894 0889 0.883 0.877 0871 0,866 9,859 0.853 0.847 0.841 0834 0827 0.820 0.814
0.921 0,915 0.910 0.905 0.899 0.894 0.888 0.882 0876 0.870 0.864 0.858 0,852 0.846 0.839 0832 0.825 0.818
0.931 0.926 0.920 0.915 0*909 0.904 0.898 0.892 0.886 0880 0.874 0,868 0862 0.855 0849 0.342 0.835 0.828
0.939 0934
0.933 0928
0941 0936 0.930 0.926 0.920 0914 0.908 0,902 0.896 0.890 0.884 0878 0.872 0.865 0.859 0.852 0.845 0.838
0941 0936 0930 0925 0.919 0.913 0.907 0.902 0.896 0.889 0.883 0.877 0870 0.864 0.857 0.850 0.843
0944 0938
0.933 0927
0946 0941 0.935 0930 0924 0'918 0912 0906 0.900 0894 0888 0882 0875 0.868 0.862 0855 0.848
0.897 0.891
0.886 0.880 0.874 0.868 0.862 0.856 0.850 0.843 0.836 0.830 0.823 O-81 6
0.913 0 907 0.902 0.896 0.891 0.885 0879 0.873 0.867 0.861 0.854 0.848 0.841 0.835 0.828 0.821
0.918 0.912 0907 0901 0.896 0890 0,884 0878 0.872 0.866 0.859 0.853 0.846 0.840 0.833 0,826
0.923 0.917 0912 0.906 0.901 0.895 0.889 0.883 0871 0.871 0864 0.858 0851 0.844 0.838 0.830
0.933 0.928
0917 0.911 0.906 0.900 0894 0.888 0.882 0876 0869 0.863 0.856 0.849 0.842 0835
0916 0.911 0.905 0899 0.893 0.887 0.881 0,874 0,868 0.861 0.854 0847 0840
0922 0916 0.910 0.904 0898 0892 0,886 0,879 0.873 0866 0.869 0.852 0.845
IS : 228 ( Part 1 ) - 1987 EXPLANATORY NOTE
IS : 228 was issued as a tentative standard in 1952 and revised in 1959 covering the chemical analysis of pig iron, cast iron and plain carton end low alloy steels. For the convenience, it was decided to publish ccrrprehersive series on chemical analysis of steels including high alloy steels and another series on ct.emical analysis of pig iron and czst iron. Acccrdingly, chemical analysis of steels was published in various parts. This standard is series of parts on chemical analysis of steels. The other parts published are given in Appendix A. The chemical analysis of pig iron and cast iron is being published in separate standard. In this revision the major modifications are as follows: have been modified as 005 to 250 percent in incorporated from
a) The limit of determination of carbon in steel place of greater than or equal to 01 percent. b) The range of pressure for the correction 730 to 770 instead of 700 to 770.
in .Table 1 have been
Reprography Unit, BE, New Delhi, India
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