IS 2062 (Part 1):2025 E650A Steel: Specifications & Listings
IS 2062 (Part 1):2025 E650A: E650A is grade E 650, quality A, in IS 2062 (Part 1):2025 (Structural Steel, Part 1: Hot Rolled Medium and High Tensile Steel), which covers plates, sheets, strips, shapes, sections, flats, bars and rods for structural work. The grade is named by its minimum yield stress.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
For thickness or diameter above 100 mm, a lower minimum tensile strength may be agreed between the purchaser and the manufacturer. Above 100 mm, yield stress for grades E 550 to E 650 is agreed between the purchaser and the manufacturer.
Source: IS 2062 (Part 1):2025, Table 3, notes 1 and 4
Elongation by thicknessgauge length 5.65 root So
Thickness or diameter (mm)
Elongation A, min (%)
Up to 40
12
Over 40 to 63
By agreement
Over 63 to 100
By agreement
Over 100
By agreement
Values are for lengthwise test pieces. For grades E 550 to E 650, elongation above 40 mm and for crosswise test pieces is agreed between the purchaser and the manufacturer.
Source: IS 2062 (Part 1):2025, Table 3, notes 5 and 6
Bend testt is the thickness
Internal bend diameter, maximum, thickness up to 25 mm
4t
Internal bend diameter, maximum, thickness over 25 to 30 mm
Not required
t is the thickness or diameter of the test piece. The bend test is not required above 25 mm for grades E 300 to E 650.
Source: IS 2062 (Part 1):2025, Table 3, note 2
Impact test and deoxidationquality A
Impact test
Not required
Mode of deoxidation
Semi-killed or killed
Source: IS 2062 (Part 1):2025, Tables 1 and 3, clause 5
Other composition limitsfrom the table notes
Nitrogen, maximum
0.012 percent
Copper as residual, maximum
0.20 percent
Micro-alloying elements (Nb, V, Ti), total maximum
0.25 percent
Alloying elements (Cr, Ni, Mo, B), by agreement, maximum
0.60 percent
Copper-bearing quality
Cu 0.20 to 0.35 percent by agreement, suffix Cu (for example E 250 Cu), CE limit raised by 0.02
Carbon equivalent CE = C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15, from the ladle analysis.
Source: IS 2062 (Part 1):2025, Table 1, notes 3 to 9
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