Structural steel E250 & E350 BR

Structural Steel Grades E250 and E350 BR are high-strength, low-alloy steels widely used for fabrication of structural members, industrial frames, bridges, and infrastructure projects where strength, reliability, and weldability are crucial. These steels conform to IS 2062 standards and are supplied in the BR (Bend/rolled condition), indicating excellent ductility and bending properties suitable for fabrication and structural forming operations.

E250 and E350 steels are known for their excellent combination of strength, formability, and weldability, making them ideal for welded constructions, beams, channels, angles, flats (pata patti), and structural profiles such as ISMC (Indian Standard Medium Channel), ISMB (Indian Standard Medium Beam), UC (Universal Column), NPB (Narrow Parallel Flange Beam), and WPB (Wide Parallel Flange Beam).

The letter “E” in the grade name stands for “Engineering Steel,” and the numbers (250, 350) represent the minimum yield strength in MPa, ensuring predictable performance under static and dynamic loads. The BR variant provides better bendability and toughness compared to standard grades, making it particularly suited for structures exposed to vibration, impact, or fluctuating loads.

Structural Steel E250 and E350 BR are available in plates, flats, beams, angles, and channels, with controlled chemical composition that ensures good weldability (low carbon equivalent value) and consistent mechanical properties. These steels are also compatible with various fabrication processes, including cutting, bending, drilling, and welding, allowing flexibility in design and application.

Due to their robust mechanical strength and resistance to deformation, these grades are extensively used in the construction of buildings, industrial sheds, bridges, towers, heavy machinery frames, railway structures, and shipbuilding applications. Their balance of economy, strength, and workability makes E250 and E350 BR among the most trusted structural materials in the steel fabrication industry.

For more information about Structural steel E250 & E350 BR or to discuss using it in your application,
please contact Divyesh Shah +91 98201 27077, Keval Shah +91 99305 27077 or give us a call at 022 3151 8314

Structural steel E250 & E350 BR Grades

• E250
• E350
• Angle
• Channel (ISMC -Indian Standard Medium Weight Channel)
• UC-(Universal Column)
• Beam (ISMB- Indian Standard Medium Weight Beam)
• NPB - Narrow Parallel Flange Beam
• WPB-Wide Parallel Flange Beam)
• Flats (Pata Patti)

Specification

Form : Angle, beam
Tolerances : As per IS 1852 / IS 2062 / EN 10029 standards
Length: 6000 mm to 12000 mm
Make: Rolling or Main
Surface Condition: Hot Rolled, Pickled, or Shot Blasted & Primer Coated

Equivalent Grades Chemical Properties Mechanical Properties

Grade / Product	Standards / Equivalents	IS (India)	DIN (Germany)	EN (Europe)	JIS (Japan)	Typical Uses / Applications
E250 BR (Mild Structural Steel)	(Mild Structural Steel)	IS 2062 E250BR	St44-2	S275JR	SS400	General structural fabrication, bridges, frames, industrial sheds, shipbuilding, base plates
E350 BR (High Strength Structural Steel)	(High Strength Structural Steel)	IS 2062 E350BR	St52-3	S355J2+N / Fe510B	SM490YB	Heavy-duty structures, bridges, machinery frames, load-bearing columns, cranes
Angles, Channels (ISMC), Beams (ISMB, NPB, WPB, UC)		IS 2062	DIN 1025 / DIN 1026	EN 10025 Sections	JIS G3192 Sections	Construction frameworks, trusses, bridges, columns, beams, infrastructure
Flats (Pata Patti)		IS 2062	DIN 1017	EN 10058	JIS G3191	Fabrication, base plates, gratings, frames, general construction
Round Bars (Mild/Alloy Steel)		IS 2062 / IS 1570	CK45, 16MnCr5, etc.	C45E, 42CrMo4	S45C, SCM435	Shafts, fasteners, machine components, bolts, forgings, fabrication

Grade / Product	C (Max %)	Mn (Max %)	Si (Max %)	S (Max %)	P (Max %)	Other Alloying Elements	Notes / Standards
E250BR (IS 2062)	0.22	1.5	0.4	0.04	0.04	–	Basic mild structural steel for general fabrication.
E350BR (IS 2062)	0.23	1.5	0.4	0.04	0.04	–	Higher-strength version of E250; heavier structures.
Angles/Channels/Beams/Flats (ISMC, ISMB, NPB, WPB, UC)	Same as E250/E350 grades.	–	–	–	–	–	Composition governed by IS 2062; same chemistry applies.
Round Bars (Mild Steel)	0.22–0.23	1.5	0.4	0.04	0.04	–	Same as IS 2062 composition.
Round Bars (Alloy Steel, e.g. C45)	0.42–0.50	0.50–0.80	0.15–0.35	0.04	0.04	Cr, Mo, Ni vary by grade	Alloy compositions differ (16MnCr5, SCM435, etc.).

Grade / Product	Standard (IS)	Yield Strength (MPa)	Tensile Strength (MPa)	Elongation (%)	Key Notes / Applications
E250BR (Structural Steel)	IS 2062	250 (min)	410 (min)	23	Mild steel for general structures, frames, industrial sheds
E350BR (Structural Steel)	IS 2062	350 (min)	490 (min)	22	Higher strength, heavy-duty buildings, bridges, cranes
Angles / Channels / Beams	IS 2062 / IS 808	250–350 (grade-based)	410–490	22–23	Standard hot-rolled sections for construction
Flats (Pata Patti)	IS 2062	250–350	410–490	22–23	Base plates, fabrication, gratings
Round Bars (Mild Steel)	IS 2062	250–350	410–490	22–23	Shafts, fasteners, machining parts
Round Bars (Alloy Steel)	IS 1570 / Alloy grades	450–850+ (varies)	650–1000+ (varies)	12–20	High-strength parts, automotive, heavy engineering

Applications Industries

Fabrication

Bridge Structure

Shipbuilding and Ship Hulls

Industrial Shed

Heavy Duty Structure

Border Fencing

Machinery Equipment