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Carbon Steel Round Bar 3-1/2" 1018 Hot Rolled

$105.17 for 12"
Diameter3-1/2"
MaterialCarbon Steel
Grade1018
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Quarter-inch increments. Min: 1", Max: 96"
0"24"48"72"96"
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Request a quote for cuts longer than 96" · Non-refundable · Tolerance: ±0.125"
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Description

Carbon Steel Round Bar 1018 HR is a low-carbon steel bar that provides excellent weldability and machinability. The hot-rolled process gives it a rougher surface finish compared to cold-finished bars, but it is often used in applications that require a stronger material. Ideal for shafts, machine components, and structural applications, this round bar is commonly found in industries requiring high strength, versatility, and reliability in demanding environments.
Not enough in stock? Call us referencing part #2390. We only show partial inventory online.
DIAMETER
Specifications
MaterialCarbon Steel
Grade/Alloy1018
ShapeRound Bar
Diameter3.5 in
Max Length96 in
Weight32.71 lb/ft
MTRAvailable Upon Request
Characteristics
WeldabilityExcellent
MachiningGood
Bending/FormingGood
Wear ResistanceFair
CorrosionFair
Shipping

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From the counter

About 1018 steel

1018 cold finished is the machining steel of the rack. It drills, taps, turns, and mills cleanly, holds its size, and comes with a smooth, accurate surface instead of mill scale. It's low carbon, so it welds easily but won't through-harden: that's the trade, easy to work but not a wear part. Brackets, pins, bushings, spacers, and keyed shafts are 1018 territory.

Read the full 1018 vs A36 vs 1045 steel guide
What is 1018 steel used for?
Machined parts that meet a cutting tool: pins, bushings, spacers, keyed shafts, brackets. It machines clean and holds size. For parts that carry real load or wear, step up to 1045.
Can you harden 1018?
Not through its thickness, since it's low carbon. You can case-harden the surface, but if a part needs real hardness or heat treatment, 1045 is the grade you want.