IS 228 is a multi-part standard providing methods for chemical analysis of steel. It covers determination of all major and minor elements (C, Si, Mn, P, S, Cr, Ni, Mo, etc.) using both classical wet chemistry and modern instrumental methods. Referenced by every steel specification in India.
Methods for chemical analysis of carbon and alloy steels covering determination of carbon, silicon, manganese, phosphorus, sulphur, chromium, nickel, molybdenum, and other elements.
Practical Notes
! IS 228 is the master testing standard — every IS steel spec (IS 2062, IS 1786, IS 513, etc.) references IS 228 for chemical analysis methods.
! Modern labs use OES (Optical Emission Spectrometry) for routine analysis, which gives results in minutes vs hours for wet chemistry.
! For dispute resolution between supplier and buyer, wet chemical methods in IS 228 are considered the referee methods.
! Sample preparation is critical — IS 228 specifies sampling from specific locations on the product.