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1045 Carbon Steel Round Bar Hot Rolled High Strength OD 6-630mm for Structural

China 1045 Carbon Steel Round Bar Hot Rolled High Strength OD 6-630mm for Structural

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1045 Carbon Steel Round Bar Hot Rolled High Strength OD 6-630mm for Structural

MOQ： 1 Ton
Price： US $590-1,050 / Ton
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Surface Treatment	Polished
Alloy Type	Non-alloy
Outer Diameter	OD 6-630mm
Carbon Content	0.42-0.5%
Silicon Content	0.17-0.37%
Manganese Content	0.5-0.8%
Tensile Strength	585 MPa
Yield Strength	450 MPa
Elongation at Break	12%
Hardness Brinell	163 HB
Density	7.85 g/cm3
Thermal Conductivity	51.9 W/mK
Thermal Expansion	11.2 µm/m°C
Modulus of Elasticity	200 GPa
Model Number	1045 S45C

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Product Specification


Surface Treatment	Polished	Alloy Type	Non-alloy
Outer Diameter	OD 6-630mm	Carbon Content	0.42-0.5%
Silicon Content	0.17-0.37%	Manganese Content	0.5-0.8%
Tensile Strength	585 MPa	Yield Strength	450 MPa
Elongation at Break	12%	Hardness Brinell	163 HB
Density	7.85 g/cm3	Thermal Conductivity	51.9 W/mK
Thermal Expansion	11.2 µm/m°C	Modulus of Elasticity	200 GPa
Model Number	1045 S45C
High Light	Hot Rolled Steel Round Bar ，High Strength Carbon Steel Round Bar ，OD 6-630mm 1045 Steel Round Bar

1045 S45C Carbon Steel Round Bar

Hot rolled plain round steel bars with high carbon content for industrial applications requiring strength and durability.

Product Overview

AISI 1045 steel round bar is a high carbon steel under American standard, classified as quenching and tempering steel with exceptional strength properties. This versatile material can be produced as hot rolled round bars, square bars, cold-drawing bars, and forged bars to meet various industrial requirements.

Key Applications

Moving parts requiring high strength: plunger of air compressor and pump, rolled shaft
Heavy machinery components: connecting rod, endless screw, gear rack, dowel
Wear resistant parts after heat treatment: crank axle, machine tool shaft, transmission shaft
Industrial, machine, and tool applications requiring good strength and ductility

Chemical Composition

Grade	C	Si	Mn	Cr	P	S	Ni	Cu
AISI 1045	0.42-0.5	0.17-0.37	0.5-0.8	≤0.25	≤0.035	≤0.035	≤0.3	≤0.25

Mechanical Properties

Tensile Strength

585 MPa

Yield Strength

450 MPa

Elongation at Break

12%

Hardness (Brinell)

163 HB

Modulus of Elasticity

200 GPa

Shear Modulus

80 GPa

Thermal Properties

Property	Value
Thermal Conductivity	51.9 W/mK
Thermal Expansion Coefficient	11.2 µm/m°C
Density	7.85 g/cm³

International Equivalents

Standard	Grade	C	Si	Mn	P	S
ASTM A29/29M	1045	0.43-0.50	/	0.60-0.90	≤0.040	≤0.050
DIN W-Nr	1.1191/CK45	0.42-0.50	≤0.40	0.50-0.80	≤0.035	≤0.035
GB/T	45	0.42-0.50	0.17-0.37	0.50-0.80	≤0.035	≤0.035
JIS	S45C	0.42-0.48	0.15-0.35	0.60-0.90	≤0.030	≤0.030

Available Steel Grades

Steel Series	Representative Steel Type
Carbon Steel Series	AISI 1020, 1045, A36, S355JR, S355JO
Petroleum Machinery Series	AISI 4150, AISI 4140, AISI 4130, 30CrMo, 4145H
Tool Mold Series	1.2714, 5CrMnMo, 5CrNiMoV, 1.2738, 1.2311, 1.2312
Bearing Series	52100, GCr15, SUJ2
Wind Power Series	18CrNiMo7-6, 17CrNiMo6, 1.6582, 1.6587, SAE8620

Forged Steel Dimensions

Round Bar: Φ85mm ~ 1200mm
Square Bar: 150×150 - 800×800mm
Flat Blocks: (150mm-800mm) × (200mm-800mm)
Custom Shafts and Rings: According to customer drawings

Frequently Asked Questions

Q: How long is your delivery time?

A: Generally 5-10 days for stocked goods, or 15-20 days for non-stocked items depending on quantity.

Q: Do you provide samples? Is it free or extra?

A: Yes, we offer samples free of charge, but freight costs are not included.

Q: What is your MOQ?

A: Usually 5 tons. Smaller quantities may have slightly higher prices, while larger quantities receive better pricing.

Q: How to buy your ideal products?

A: Provide your drawing for production, or we can design according to your requirements if you don't have a clear plan.

Q: How to get an accurate quotation?

A: Provide product detail size & length, product quantities, and product material grade.

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Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...

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