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Carbon Steel Flat Bar 3/8" x 1-1/4" 1018 Cold Finished

$13.36 for 12"
Thickness3/8"
MaterialCarbon Steel
Grade1018
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1 Choose Your Length Enter your cut length
in
Quarter-inch increments. Min: 1", Max: 96"
0"24"48"72"96"
2 Select Quantity How many lengths?
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3 Add to Cart Review your order
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Request a quote for cuts longer than 96" · Non-refundable · Tolerance: ±0.125"
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Description

Carbon Steel Flat Bar 1018 Cold Finished offers excellent machinability, tight tolerances, and a clean cold-finished surface, making it ideal for a wide range of applications. Often used in machine shop, fabrication, and general manufacturing projects, it is perfect for manufacturing shafts, pins, and machined parts. It is a go-to choice for low-stress structural and machined work where consistent dimensions matter.
Not enough in stock? Call us referencing part #679. We only show partial inventory online.
WIDTH THICKNESS
Specifications
MaterialCarbon Steel
Grade/Alloy1018
ShapeFlat Bar
Thickness0.375 in
Width1.25 in
Max Length96 in
Weight1.59 lb/ft
MTRAvailable Upon Request
Characteristics
WeldabilityExcellent
MachiningExcellent
Bending/FormingGood
Wear ResistanceFair
CorrosionPoor
Shipping

Pickup In-Store

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  • Ships next business day (orders before 3pm)
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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.