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IS 228:2018 is the Indian Standard (BIS) for methods for chemical analysis of steels. 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.
Overview
Status
Current
Usage level
Frequently Used
Domain
Materials Science — Testing Methods and Quality Control
! 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.
Frequently referenced clauses
Part 1 — Determination of carbon
Part 2 — Determination of silicon
Part 3 — Determination of manganese
Part 6 — Determination of sulphur
Part 7 — Determination of phosphorus
chemical analysissteel testingspectroscopywet analysiscomposition
International Equivalents
Similar International Standards
ASTM E350ASTM International (US)
HighCurrent
Standard Test Methods for Chemical Analysis of Carbon Steel, Low-Alloy Steel
Both provide methods for chemical analysis of carbon and alloy steels covering the same elements.
BS EN ISO 17081ISO/BSI
LowCurrent
Method of measurement of hydrogen permeation and determination of hydrogen uptake and transport in metals
ISO 17081 is for hydrogen. For general steel chemistry, EN ISO standards for specific elements apply.
Key Differences
≠IS 228 provides both wet chemistry and instrumental methods in one multi-part standard. ASTM has separate standards for different analytical methods (E350 wet, E1019 combustion, E415 OES).
Key Similarities
≈Both IS 228 and ASTM E350 cover determination of C, Si, Mn, P, S, Cr, Ni, Mo, V, and other alloying elements in steel.
Parameter Comparison
Parameter
IS Value
International
Source
⚠ Verify details from original standards before use
Key Values0
No quick reference values available for this code yet.
Whenever chemical composition of steel needs to be verified — incoming inspection, mill test certificate verification, dispute resolution, or quality audit. Every steel specification references IS 228.
Is OES testing acceptable under IS 228?+
Yes, modern instrumental methods including OES are accepted for routine testing. IS 228 wet chemistry methods serve as referee methods in case of disputes.