Name: Carbon Steel Square Billet
SKU: 0

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Carbon Steel Square Billet

Carbon steel square billets are semi-finished steel products with a square cross-section, produced by continuous casting or rolling. They serve as the primary feedstock for rolling structural steel, rebar, wire rod, and other steel products. Square billets offer good dimensional stability, high yield during processing, and compatibility with various hot rolling mills. They can be made from plain carbon steel, high strength low alloy steel, or special grades depending on the final application.

PRODUCTS INTRODUCTION

Plain Carbon Steel Square Billet

Specifications:

Grade: A36, SS400, Q235B, Q275, Q345B, S235JR, S275JR, S355JR, SM400, SM490, ASTM A36, ASTM A529, EN 10025 S235, EN 10025 S275, EN 10025 S355, JIS G3101 SS400, JIS G3192, etc.
Cross-section Size: 100×100 mm – 200×200 mm
Length: 6 m – 12 m (custom length available)
Manufacturing Process: Continuous casting → Cutting → Cooling → Inspection
Surface Condition: As-cast, scaled surface
Applications: Structural steel rolling, rebar production, general engineering steel

Mechanical Properties:

Property	Value
Tensile Strength	370–500 MPa
Yield Strength	≥ 235 MPa
Elongation	≥ 20%
Hardness	120–160 HB

Chemical Composition (%):

C	Mn	Si	P	S
≤0.22	0.30–0.70	≤0.35	≤0.045	≤0.050

High Strength Low Alloy Square Billet

Specifications:

Grade: Q345B, Q355B, Q355D, Q390B, Q420B, Q460C, A572 Gr.50, A572 Gr.60, A572 Gr.65, A913 Gr.50, A913 Gr.65, A992, ASTM A709 Gr.50, ASTM A709 Gr.50W, S420ML, S460ML, etc.
Size Range: 120×120 mm – 200×200 mm
Length: 6 m – 12 m
Applications: High strength sections, machinery manufacturing, heavy structural rolling

Mechanical Properties:

Tensile Strength	Yield Strength	Elongation
450–620 MPa	≥ 345 MPa	≥ 18%

Chemical Composition (% Q345B):

C	Mn	Si	P	S
≤0.20	1.00–1.60	≤0.50	≤0.035	≤0.035

Special Quality Square Billet

Specifications:

Grade: 4140, 4340, 8620, 1215, 42CrMo4, 34CrNiMo6, 16MnCr5, S45C, SCM440, SNCM439, ASTM 4140, ASTM 4340, DIN 42CrMo4, DIN 34CrNiMo6, etc.
Size Range: 150×150 mm – 200×200 mm
Applications: Forging stock, machine parts, shaft production

Chemical Composition (% SAE 1045):

C	Mn	Si	P	S
0.43–0.50	0.60–0.90	≤0.40	≤0.040	≤0.050

Product Real Shot

Packaging and Shipping

FAQ

Q1: What product information must I provide before making a purchase?
A: Please provide the grade, width, thickness, surface treatment requirements, and the quantities you need.

Q2: What about product pricing information?
A: Prices may vary due to fluctuations in raw material costs.

Q3: Is it possible to send samples?
A: Yes, we offer free samples with express shipping worldwide.

Q4: Do you offer a service for customized products?
A: Yes, we can supply according to your specific requirements.

Q5: Can I visit you in person?
A: Customers from all over the world are welcome to meet with us.

Q6: Can you assist me in importing steel products for the first time?
A: Yes, we can provide support through our experienced shipping agents.

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