Carbon Steel Cold Finished 1018 Rectangle Bar

Our 1018 cold-finished carbon steel rectangle bar offers excellent dimensional accuracy and a smooth, bright surface finish. These flat bars are frequently used for manufacturing mounting plates, machinery bases, and general-purpose brackets. The cold-finishing process increases the material's yield and tensile strength compared to hot-rolled alternatives. 1018 steel is highly valued for its exceptional weldability and ease of machining in both manual and CNC operations. Onlinemetals.com provides 1018 cold-finished bars in a wide range of dimensions to support your versatile fabrication needs.

154 Results

Sort by

5/8" x 1" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 20690

*Select a Size or Custom Cut

QTY

Update

$9.83 for 1

$9.83 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.625"
Width: 1"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

3/16" x 1" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 6815

*Select a Size or Custom Cut

QTY

Update

$4.50 for 1

$4.50 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.1875"
Width: 1"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

1/2" x 4" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 7511

*Select a Size or Custom Cut

QTY

Update

$42.80 for 1

$42.80 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.5"
Width: 4"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

1/8" x 1/4" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 4800

*Select a Size or Custom Cut

QTY

Update

$4.50 for 1

$4.50 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.125"
Width: 0.25"

Click for more details

mild-steel-key-stock-rectangle-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-key-stock-rectangle-1superZoom

1/4" x 3/4" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 7464

*Select a Size or Custom Cut

QTY

Update

$4.50 for 1

$4.50 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.25"
Width: 0.75"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

1/4" x 1/2" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 7462

*Select a Size or Custom Cut

QTY

Update

$4.50 for 1

$4.50 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.25"
Width: 0.5"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

1/2" x 2" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 7505

*Select a Size or Custom Cut

QTY

Update

$17.77 for 1

$17.77 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.5"
Width: 2"

Click for more details

mild-steel-key-stock-rectangle-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-key-stock-rectangle-1superZoom

1/8" x 6" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 19619

*Select a Size or Custom Cut

QTY

Update

$20.99 for 1

$20.99 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.125"
Width: 6"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

1/8" x 1 1/2" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 4807

*Select a Size or Custom Cut

QTY

Update

$4.50 for 1

$4.50 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.125"
Width: 1.5"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

1/8" x 3/4" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 4804

*Select a Size or Custom Cut

QTY

Update

$4.50 for 1

$4.50 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.125"
Width: 0.75"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

1/4" x 1" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 7465

*Select a Size or Custom Cut

QTY

Update

$5.49 for 1

$5.49 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.25"
Width: 1"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

1/8" x 1" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 4805

*Select a Size or Custom Cut

QTY

Update

$4.50 for 1

$4.50 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.125"
Width: 1"

Click for more details

mild-steel-key-stock-rectangle-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-key-stock-rectangle-1superZoom

1/8" x 5/8" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 4803

*Select a Size or Custom Cut

QTY

Update

$4.50 for 1

$4.50 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.125"
Width: 0.625"

Click for more details

mild-steel-key-stock-rectangle-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-key-stock-rectangle-1superZoom

3/8" x 5/8" Carbon Steel Rectangle Bar 1018 Cold Finish Part # mp-00066960

Sold & Shipped by MSP Metals

*Select a Size or Custom Cut

QTY

Update

$5.04 for 1

$5.04 ea.

Dimensions

Thickness: 0.375"
Width: 0.625"

Click for more details

Key Features

CUSTOM CUT DFARS Compliant

MTR AVAILABLE product return

Non-returnable

View more product details

Click for more details

3/8" x 5/8" Carbon Steel Rectangle Bar 1018 Cold Finish Part # mp-00066960

Dimensions

Thickness: 0.375"
Width: 0.625"

Select a Size

12″ (1 ft.) - $5.04 ea.
24″ (2 ft.) - $10.08 ea.
36″ (3 ft.) - $13.97 ea.
48″ (4 ft.) - $17.75 ea.
72″ (6 ft.) - $19.43 ea.
96″ (8 ft.) - $31.24 ea.
144″ (12 ft.) - $38.85 ea.

Seller's Info	Custom Cut	MTR	USA Made	Returns	DFARS	Price	Qty

3/4" x 1" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 9721

*Select a Size or Custom Cut

QTY

Update

$13.94 for 1

$13.94 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.75"
Width: 1"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

1/2" x 1 3/4" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 7504

*Select a Size or Custom Cut

QTY

Update

$18.17 for 1

$18.17 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.5"
Width: 1.75"

Click for more details

mild-steel-key-stock-rectangle-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-key-stock-rectangle-1superZoom

1/2" x 3/4" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 7499

*Select a Size or Custom Cut

QTY

Update

$8.80 for 1

$8.80 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.5"
Width: 0.75"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

1/2" x 1 1/2" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 7503

*Select a Size or Custom Cut

QTY

Update

$12.58 for 1

$12.58 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.5"
Width: 1.5"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

1/4" x 2" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 7469

*Select a Size or Custom Cut

QTY

Update

$11.59 for 1

$11.59 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.25"
Width: 2"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

1" x 1 1/2" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 12969

*Select a Size or Custom Cut

QTY

Update

$27.24 for 1

$27.24 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 1"
Width: 1.5"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

1/8" x 4" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 6809

*Select a Size or Custom Cut

QTY

Update

$11.25 for 1

$11.25 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.125"
Width: 4"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

1/8" x 1/2" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 4802

*Select a Size or Custom Cut

QTY

Update

$4.50 for 1

$4.50 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.125"
Width: 0.5"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

1/8" x 2" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 4808

*Select a Size or Custom Cut

QTY

Update

$4.96 for 1

$4.96 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.125"
Width: 2"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

1/4" x 5" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 7476

*Select a Size or Custom Cut

QTY

Update

$22.81 for 1

$22.81 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 0.25"
Width: 5"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

1" x 3" Carbon Steel Rectangle Bar 1018 Cold Finish Part # 9705

*Select a Size or Custom Cut

QTY

Update

$42.59 for 1

$42.59 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Thickness: 1"
Width: 3"

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

mild-steel-rectangle-bar-1018-cold-finish-1superZoom

Displaying 1 - 25 of 154 results

Results per page

PREVIOUS
1
2
3
4
5
7
NEXT

Can’t find what you’re looking for? Our team is here to help!

Contact us