IS 2002 Equivalent Grades: How Grade 1 and Grade 2 Compare to ASTM and EN Standards
IS 2002 is India's national standard for boiler and pressure vessel steel plates, and engineers working on projects that reference both Indian and international codes frequently need to map IS 2002 Grade 1 and Grade 2 onto ASTM and EN designations. This guide explains the comparison.
What is IS 2002?
IS 2002 is the Bureau of Indian Standards specification for pressure vessel and boiler steel plates, available primarily in Grade 1 (235 MPa minimum yield, 360-520 MPa tensile) and Grade 2 (265 MPa minimum yield, 410-560 MPa tensile). It is the mandated standard for Indian thermal power, refinery, and industrial boiler projects, particularly where Indian Boiler Regulations (IBR) certification is required.
IS 2002 Grade 1 vs ASTM A516 Grade 55/60
IS 2002 Grade 1's strength class is broadly comparable to ASTM A516 Grade 55 and Grade 60, both targeting moderate-strength pressure vessel service. The exact chemical composition and Charpy impact requirements differ between the Indian and American standards, so this should be treated as an approximate strength-class match rather than a direct substitute.
IS 2002 Grade 2 vs ASTM A516 Grade 65/70
IS 2002 Grade 2's higher strength class aligns more closely with ASTM A516 Grade 65 and Grade 70 — the most widely used PVQ grade internationally. Again, while the yield and tensile strength ranges overlap, the two standards are governed by different specifications and should not be assumed interchangeable without engineering review.
IS 2002 vs EN 10028-2
In the European system, EN 10028-2 P235GH is the closest reference to IS 2002 Grade 1, and P265GH is the closest reference to IS 2002 Grade 2, both being pressure-vessel-quality steels rated for elevated-temperature service. As with the ASTM comparison, these are approximate class matches, not exact equivalents.
Why This Matters for Procurement
For thermal power, refinery, and boiler projects governed by Indian codes, IS 2002 with IBR certification is typically mandatory regardless of any ASTM or EN equivalence — international standards cannot simply be substituted for regulatory compliance. Conversely, ASME-coded vessels require ASTM/ASME-listed materials. Always confirm which code governs your specific project before assuming any cross-standard substitution is acceptable.
Conclusion
IS 2002 Grade 1 and Grade 2 map approximately onto ASTM A516 Grade 55/60 and Grade 65/70 respectively, and onto EN 10028-2 P235GH and P265GH in Europe — but code compliance, not just strength-class similarity, determines which standard your project actually requires. Convergence Steel supplies IS 2002 plates with full BIS and IBR documentation. Contact our technical team for guidance on your specific project code.
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