Carbon Steel Square Bars

Hot Rolled Mild Carbon Steel Square Bar

• Grade: ASTM A36 / S235JR

• Surface Finish: Black (mill finish)

• Size Range: 10 mm × 10 mm to 200 mm × 200 mm

• Tensile Strength: 400–550 MPa

• Yield Strength: ≥250 MPa

• Applications: Structural frameworks, supports, agricultural tools, furniture frames

• Material Composition:

• Grade: C45 / SAE 1045

• Condition: Normalized or quenched and tempered

• Size Range: 12 mm × 12 mm to 150 mm × 150 mm

• Tensile Strength: 570–700 MPa (as rolled), up to 850 MPa (quenched & tempered)

• Hardness: 160–220 HB (normalized), 200–260 HB (quenched & tempered)

• Applications: Shafts, gears, mechanical components, wear-resistant tools

• Material Composition:

• Grade: SAE 1018 / EN3B

• Condition: Cold drawn, bright finish

• Size Range: 6 mm × 6 mm to 60 mm × 60 mm

• Tolerances: h11 or better

• Tensile Strength: 440–550 MPa

• Surface Roughness: Ra ≤ 3.2 μm

• Applications: Precision components, fasteners, machine tool spindles

• Material Composition:

Packaging and Shipping

Q1: What product information must I provide before making a purchase?

A: Please provide the material, size, surface treatment requirements, and the quantities you need.

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.