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EN S235JR Carbon steel I-beams

EN S235JR Carbon steel I-beams
EN S235JR Carbon steel I-beams - Image 2
EN S235JR Carbon steel I-beams - Image 3
EN S235JR Carbon steel I-beams - Image 4
EN S235JR Carbon steel I-beams - Image 5

EN S235JR carbon steel I-beams are a common structural steel material specified in European standards. They offer excellent plasticity, toughness, and weldability, making them easy to form and process, meeting the manufacturing and installation requirements of general structural components. They are widely used in steel frames, bridges, ships, and vehicle components in construction projects, and are also used in the manufacture of various tools, cutting tools, molds, and measuring instruments.

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Carbon steel I-beams

Product Introduction

ASTM A36 Carbon Steel I – beams
PropertyValue
Chemical Composition (Maximum Content)Carbon: 0.26%
Manganese: Not specified
Phosphorus: 0.040%
Sulfur: 0.050%
Silicon: 0.40%
Mechanical PropertiesYield Strength: 250MPa
Tensile Strength: 400 – 550MPa
Elongation: 23%
EN S235JR Carbon Steel I – beams
PropertyValue (t≤16mm)
Chemical Composition (Maximum Content)Carbon: 0.19%
Silicon: Not specified
Manganese: 1.5%
Phosphorus: 0.045%
Sulfur: 0.045%
Copper: 0.60%
Nitrogen: 0.014%
Mechanical PropertiesYield Strength: 235MPa
Tensile Strength (3mm≤t≤40mm): 360 – 510MPa
Elongation (3mm≤t≤16mm): 26%
Charpy V – notch Test Temperature: 20℃
Charpy V – notch Impact Energy (Longitudinal): 27J
ASTM A572 Grade 50 Carbon Steel I – beams
PropertyValue
Chemical Composition (Maximum Content)Carbon: 0.23%
Manganese: 0.50 – 1.60%
Silicon: 0.40%
Vanadium: 0.15%
Columbium: 0.05%
Phosphorus: 0.035%
Sulfur: 0.045%
Mechanical PropertiesYield Strength: 345MPa
Tensile Strength: 450 – 585MPa
Elongation: 21%

 

ASTM A36 Carbon Steel I – beams
ElementMaximum Content（%）
Carbon0.26
Phosphorus0.04
Sulfur0.05
Silicon≤0.40
ManganeseNot specified
NoteCopper content can be specified as required.
ASTM A572 Grade 50 Carbon Steel I – beams
ElementMaximum Content（%）
Carbon0.23
Manganese0.50 – 1.60
Silicon0.40
Vanadium0.15
Columbium0.05
Phosphorus0.035
Sulfur0.045
EN S235JR Carbon Steel I – beams
ElementMaximum Content（%）
Carbon0.17
Manganese1.4
Phosphorus0.035
Sulfur0.035
SiliconNot specified

Chinese Standard Q235B Carbon Steel I – beams

ElementMaximum Content（%）
Carbon0.2
Manganese1.4
Phosphorus0.045
Sulfur0.045
Silicon0.35

Chinese Standard Q345B Carbon Steel I – beams

ElementMaximum Content（%）
Carbon0.2
Manganese1.7
Phosphorus0.035
Sulfur0.035
Silicon0.5
Niobium0.07
Vanadium0.2
Titanium0.2

 

ASTM A36 Carbon Steel I-Beams
(Compliant with ASTM A36/A36M – Standard Specification for Carbon Structural Steel)

 

Mechanical PropertyValue (Typical)Notes
Yield Strength (Min)250 MPa (36 ksi)For sections with thickness ≤ 203 mm
Tensile Strength400–550 MPa (58–80 ksi) 
Elongation (Min)23%For specimens with gauge length = 50 mm
Charpy V-Notch Impact EnergyNot specifiedOptional; typically ≥ 27 J at 20°C if required
Modulus of Elasticity (E)200 GPa (29,000 ksi)Typical for carbon steels
Poisson’s Ratio0.3At room temperature
ASTM A572 Grade 50 Carbon Steel I-Beams
(Compliant with ASTM A572/A572M – Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel)

 

Mechanical PropertyValue (Min/Range)Notes
Yield Strength (Min)345 MPa (50 ksi)For sections with thickness ≤ 12.7 mm
Tensile Strength450–585 MPa (65–85 ksi) 
Elongation (Min)21%For specimens with gauge length = 50 mm
Charpy V-Notch Impact Energy (Min)27 J (20 ft-lb)At -40°C (-40°F) for thickness ≤ 50 mm
Modulus of Elasticity (E)200 GPa (29,000 ksi)Typical for high-strength low-alloy steel
Poisson’s Ratio0.3At room temperature
EN S235JR Carbon Steel I-Beams
(Compliant with EN 10025-2:2019 – Hot-Rolled Products of Non-Alloy Structural Steels)

 

Mechanical PropertyValue (Min/Range)Notes
Yield Strength (Min)235 MPaFor thickness ≤ 16 mm; decreases slightly for thicker sections (e.g., 225 MPa for 16–40 mm)
Tensile Strength360–510 MPaFor thickness 3–40 mm
Elongation (Min)26%For thickness 3–16 mm (gauge length = 5.65×√S₀, where S₀ = original cross-sectional area)
Charpy V-Notch Impact Energy (Min)27 JLongitudinal specimens at 20°C
Modulus of Elasticity (E)210 GPaTypical for European structural steels
Poisson’s Ratio0.3At room temperature
GB/T Q235B Carbon Steel I-Beams
(Compliant with GB/T 700-2006 – Carbon Structural Steels; GB/T 11263-2017 – Hot-Rolled H, I, and Channel Sections)

 

Mechanical PropertyValue (Min/Range)Notes
Yield Strength (Min)235 MPaFor thickness ≤ 16 mm
Tensile Strength375–500 MPaFor thickness 3–40 mm
Elongation (Min)26%For specimens with gauge length = 50 mm
Charpy V-Notch Impact Energy (Min)27 JAt 20°C (transverse specimens)
Modulus of Elasticity (E)206 GPaTypical for Chinese carbon structural steels
Poisson’s Ratio0.3At room temperature

Packaging and transportation

8unit in 1*20GP container , 12units in 1*40HQ container, Fumigated wood tray and 10mm wire fixed.

Application Areas

New steel materials are used in food processing, chemical, construction, automotive, marine, and medical industries, offering durability, corrosion resistance, and strength.

Stainless Steel in Construction & Building

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Stainless steel is a vital material for commercial buildings, bridges, and airports, used in structural frames, roofing, wall cladding, handrails, elevator interiors, and even decorative handicrafts.
Stainless Steel in Automotive Manufacturing

Stainless Steel in Automotive Manufacturing

Various grades of stainless steel are used to make car bodies, grilles, exhaust systems, fuel tanks, wheel axles, and bearings, thanks to their rust resistance and durability.
Stainless Steel in Chemical & Oil Industries

Stainless Steel in Chemical & Oil Industries

Ideal for transporting chemicals and liquids, it’s widely used in pipelines, storage tanks, pumps, and processing vessels in chemical, oil, and gas sectors.
Stainless Steel in Medical Applications

Stainless Steel in Medical Applications

With hygienic and corrosion-resistant properties, it’s essential for medical equipment like operating tables, surgical tools, and sterile processing instruments.
Stainless Steel in Household Appliances

Stainless Steel in Household Appliances

Around 75% of home appliances rely on stainless steel, including ovens, refrigerators, washing machines, kitchen hardware, and TV frames.
Stainless Steel in Furniture & Daily Use

Stainless Steel in Furniture & Daily Use

Stainless steel coils and sheets are versatile for daily items: trash cans, benches, tables, bookshelves, advertising displays, and outdoor furniture.

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