GB Q195/Q235/Q345 Carbon steel I-beams

GB Q195/Q235/Q345 Carbon steel I-beams - Image 3

GB Q195/Q235/Q345 Carbon steel I-beams - Image 4

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Q195: This is a low-carbon steel with a carbon content of less than 0.15% and a yield strength of at least 195 MPa. It exhibits good ductility, toughness, and weldability, but its strength is relatively low.

Q235: This is a carbon structural steel with a carbon content generally ranging from 0.17% to 0.22% and a yield strength of at least 235 MPa. It offers high strength, along with good ductility, toughness, weldability, and cold working properties, resulting in a well-balanced overall performance.

Q345: This is a low-alloy, high-strength structural steel with a yield strength of at least 345 MPa. Based on Q235, it incorporates small amounts of alloying elements such as manganese, silicon, vanadium, and niobium, significantly improving its strength, toughness, and corrosion resistance.

Categories: Carbon Steel, Carbon Steel Profiles

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Carbon steel I-beams

Product Introduction

Product Description

ASTM A36 Carbon Steel I – beams

Property	Value
Chemical Composition (Maximum Content)	Carbon: 0.26% Manganese: Not specified Phosphorus: 0.040% Sulfur: 0.050% Silicon: 0.40%
Mechanical Properties	Yield Strength: 250MPa Tensile Strength: 400 – 550MPa Elongation: 23%

EN S235JR Carbon Steel I – beams

Property	Value (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 Properties	Yield 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

Property	Value
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 Properties	Yield Strength: 345MPa Tensile Strength: 450 – 585MPa Elongation: 21%

Chemical Composition

ASTM A36 Carbon Steel I – beams

Element	Maximum Content（%）
Carbon	0.26
Phosphorus	0.04
Sulfur	0.05
Silicon	≤0.40
Manganese	Not specified
Note	Copper content can be specified as required.

ASTM A572 Grade 50 Carbon Steel I – beams

Element	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

EN S235JR Carbon Steel I – beams

Element	Maximum Content（%）
Carbon	0.17
Manganese	1.4
Phosphorus	0.035
Sulfur	0.035
Silicon	Not specified

Chinese Standard Q235B Carbon Steel I – beams

Element	Maximum Content（%）
Carbon	0.2
Manganese	1.4
Phosphorus	0.045
Sulfur	0.045
Silicon	0.35

Chinese Standard Q345B Carbon Steel I – beams

Element	Maximum Content（%）
Carbon	0.2
Manganese	1.7
Phosphorus	0.035
Sulfur	0.035
Silicon	0.5
Niobium	0.07
Vanadium	0.2
Titanium	0.2

Mechanical Properties

ASTM A36 Carbon Steel I-Beams

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

Mechanical Property	Value (Typical)	Notes
Yield Strength (Min)	250 MPa (36 ksi)	For sections with thickness ≤ 203 mm
Tensile Strength	400–550 MPa (58–80 ksi)
Elongation (Min)	23%	For specimens with gauge length = 50 mm
Charpy V-Notch Impact Energy	Not specified	Optional; typically ≥ 27 J at 20°C if required
Modulus of Elasticity (E)	200 GPa (29,000 ksi)	Typical for carbon steels
Poisson’s Ratio	0.3	At 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 Property	Value (Min/Range)	Notes
Yield Strength (Min)	345 MPa (50 ksi)	For sections with thickness ≤ 12.7 mm
Tensile Strength	450–585 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 Ratio	0.3	At room temperature

EN S235JR Carbon Steel I-Beams

(Compliant with EN 10025-2:2019 – Hot-Rolled Products of Non-Alloy Structural Steels)

Mechanical Property	Value (Min/Range)	Notes
Yield Strength (Min)	235 MPa	For thickness ≤ 16 mm; decreases slightly for thicker sections (e.g., 225 MPa for 16–40 mm)
Tensile Strength	360–510 MPa	For 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 J	Longitudinal specimens at 20°C
Modulus of Elasticity (E)	210 GPa	Typical for European structural steels
Poisson’s Ratio	0.3	At 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 Property	Value (Min/Range)	Notes
Yield Strength (Min)	235 MPa	For thickness ≤ 16 mm
Tensile Strength	375–500 MPa	For thickness 3–40 mm
Elongation (Min)	26%	For specimens with gauge length = 50 mm
Charpy V-Notch Impact Energy (Min)	27 J	At 20°C (transverse specimens)
Modulus of Elasticity (E)	206 GPa	Typical for Chinese carbon structural steels
Poisson’s Ratio	0.3	At room temperature

Packaging and transportation

8unit in 120GP container , 12units in 140HQ 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.

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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

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

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

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

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

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GB Q195/Q235/Q345 Carbon steel I-beams

Carbon steel I-beams

Product Introduction

ASTM A36 Carbon Steel I – beams

EN S235JR Carbon Steel I – beams

ASTM A572 Grade 50 Carbon Steel I – beams

ASTM A36 Carbon Steel I – beams

ASTM A572 Grade 50 Carbon Steel I – beams

EN S235JR Carbon Steel I – beams

Chinese Standard Q235B Carbon Steel I – beams

Chinese Standard Q345B Carbon Steel I – beams

ASTM A36 Carbon Steel I-Beams

ASTM A572 Grade 50 Carbon Steel I-Beams

EN S235JR Carbon Steel I-Beams

GB/T Q235B Carbon Steel I-Beams

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

Stainless Steel in Automotive Manufacturing

Stainless Steel in Chemical & Oil Industries

Stainless Steel in Medical Applications

Stainless Steel in Household Appliances

Stainless Steel in Furniture & Daily Use

Related Products

More Related Products Recommendations

FAQs

Get Inquiry Now

Products

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Work Hours

8unit in 120GP container , 12units in 140HQ container, Fumigated wood tray and 10mm wire fixed.