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Hot Rolled Carbon Steel Rectangle Bar

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24-07-2025 - carbon steel bar-rectangle a36 - 1000x1000superZoom-main

Hot Rolled Carbon Steel Rectangle Bar

Hot Rolled Carbon Steel Rectangle/Flat Bar is normally used for structural and industrial applications. This material can be Commercial Quality for smaller sizes and A36 for most other sizes. This material offers good strength, high durability, heavy weight, easy weldability, and low cost. A36 steel is the most common low-carbon structural steel.

Relevant Knowledge Hub Resources: 5 Reasons to Cut to Size | Hot Roll vs Cold Roll Steel

Defense Grade Store

Structural Store

Material Properties

Carbon Steel A36 Product Guide |

Carbon Steel A36 Rectangle Bar Tolerances

24-07-2025 - carbon steel bar-rectangle a36 - 1000x1000superZoom-main

Hot Rolled Carbon Steel Rectangle Bar

Hot Rolled Carbon Steel Rectangle/Flat Bar is normally used for structural and industrial applications. This material can be Commercial Quality for smaller sizes and A36 for most other sizes. This material offers good strength, high durability, heavy weight, easy weldability, and low cost. A36 steel is the most common low-carbon structural steel.

Relevant Knowledge Hub Resources: 5 Reasons to Cut to Size | Hot Roll vs Cold Roll Steel

Defense Grade Store

Structural Store

Material Properties

Carbon Steel A36 Product Guide |

Carbon Steel A36 Rectangle Bar Tolerances

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154 results

154 results

1/4" x 3/4" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10025

Select a Size or Custom Cut

QTY

Update

$4.50 for 1

$4.50 ea.

Dimensions

Thickness: 0.25"
Width: 0.75"

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10025

1/4" x 1" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10026

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QTY

Update

$4.50 for 1

$4.50 ea.

Dimensions

Thickness: 0.25"
Width: 1"

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10026

1/4" x 1 1/2" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10029

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QTY

Update

$4.50 for 1

$4.50 ea.

Dimensions

Thickness: 0.25"
Width: 1.5"

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10029

1/4" x 2 1/2" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10031

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QTY

Update

$6.42 for 1

$6.42 ea.

Dimensions

Thickness: 0.25"
Width: 2.5"

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10031

1/4" x 3" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10032

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QTY

Update

$7.38 for 1

$7.38 ea.

Dimensions

Thickness: 0.25"
Width: 3"

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10032

1/4" x 1 1/4" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10027

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QTY

Update

$4.50 for 1

$4.50 ea.

Dimensions

Thickness: 0.25"
Width: 1.25"

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10027

1/4" x 4" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10035

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QTY

Update

$9.93 for 1

$9.93 ea.

Dimensions

Thickness: 0.25"
Width: 4"

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10035

1/4" x 6" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10037

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QTY

Update

$14.93 for 1

$14.93 ea.

Dimensions

Thickness: 0.25"
Width: 6"

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10037

1/4" x 8" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10038

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QTY

Update

$20.32 for 1

$20.32 ea.

Dimensions

Thickness: 0.25"
Width: 8"

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10038

1/4" x 5" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10036

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QTY

Update

$12.68 for 1

$12.68 ea.

Dimensions

Thickness: 0.25"
Width: 5"

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10036

0.25" x 10" Carbon Steel Rectangle Bar A36 Hot Rolled Part # mp-00005213

Sold & Shipped by All Metals Inc

Select a Size or Custom Cut

QTY

Update

$26.95 for 1

$26.95 ea.

Buy More & Save up to 14% !

Qty

Price ea.

Savings

3-7

$25.60

5%

8-20

$24.26

9%

21+

$22.91

14%

More

Less

Dimensions

Thickness: 0.25"
Width: 10"
Ships In: 1-2 Business Days

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0.25" x 10" Carbon Steel Rectangle Bar A36 Hot Rolled-mob{product.code}

Key Features

CUSTOM CUT

U.S.A. Made DFARS Compliant

MTR NOT AVAILABLE product return

product return

Non-returnable

View more product details

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0.25" x 10" Carbon Steel Rectangle Bar A36 Hot Rolled-deskmp-00005213

0.25" x 10" Carbon Steel Rectangle Bar A36 Hot Rolled Part # mp-00005213

Dimensions

Thickness: 0.25"
Width: 10"
Ships In: 1-2 Business Days

Select a Size or Custom Cut

+ Create Custom Cut
12″ (1 ft.) - $26.95 ea.
18″ (18 in.) - $34.95 ea.
24″ (2 ft.) - $42.95 ea.
30″ (30 in.) - $50.95 ea.
36″ (3 ft.) - $58.95 ea.
42″ (42 in.) - $66.95 ea.
48″ (4 ft.) - $74.95 ea.

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

0.25" x 12" Carbon Steel Rectangle Bar A36 Hot Rolled Part # mp-00005205

Sold & Shipped by All Metals Inc

Select a Size or Custom Cut

QTY

Update

$33.95 for 1

$33.95 ea.

Buy More & Save up to 14% !

Qty

Price ea.

Savings

3-7

$32.25

5%

8-20

$30.56

9%

21+

$28.86

14%

More

Less

Dimensions

Thickness: 0.25"
Width: 12"
Ships In: 1-2 Business Days

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0.25" x 12" Carbon Steel Rectangle Bar A36 Hot Rolled-mob{product.code}

Key Features

CUSTOM CUT

U.S.A. Made DFARS Compliant

MTR NOT AVAILABLE product return

product return

Non-returnable

View more product details

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0.25" x 12" Carbon Steel Rectangle Bar A36 Hot Rolled-deskmp-00005205

0.25" x 12" Carbon Steel Rectangle Bar A36 Hot Rolled Part # mp-00005205

Dimensions

Thickness: 0.25"
Width: 12"
Ships In: 1-2 Business Days

Select a Size or Custom Cut

+ Create Custom Cut
12″ (1 ft.) - $33.95 ea.
18″ (18 in.) - $43.95 ea.
24″ (2 ft.) - $53.95 ea.
30″ (30 in.) - $63.95 ea.
36″ (3 ft.) - $73.95 ea.
42″ (42 in.) - $83.95 ea.
48″ (4 ft.) - $93.95 ea.

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

5/16" x 1" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10041

Select a Size or Custom Cut

QTY

Update

$5.56 for 1

$5.56 ea.

Dimensions

Thickness: 0.3125"
Width: 1"

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10041

5/16" x 1 1/2" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10043

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QTY

Update

$5.36 for 1

$5.36 ea.

Dimensions

Thickness: 0.3125"
Width: 1.5"

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10043

5/16" x 2" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10045

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QTY

Update

$8.54 for 1

$8.54 ea.

Dimensions

Thickness: 0.3125"
Width: 2"

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10045

5/16" x 2 1/2" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10046

Select a Size or Custom Cut

QTY

Update

$43.59 for 1

$43.59 ea.

Dimensions

Thickness: 0.3125"
Width: 2.5"

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10046

5/16" x 8" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10054

Select a Size or Custom Cut

QTY

Update

$26.51 for 1

$26.51 ea.

Dimensions

Thickness: 0.3125"
Width: 8"

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10054

5/16" x 6" Carbon Steel Rectangle Bar A36 Hot Rolled Part # mp-00066946

Sold & Shipped by MSP Metals

Select a Size or Custom Cut

QTY

Update

$21.42 for 1

$21.42 ea.

Dimensions

Thickness: 0.313"
Width: 6"

Click for more details

5/16" x 6" Carbon Steel Rectangle Bar A36 Hot Rolled-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant

MTR AVAILABLE product return

product return

Non-returnable

View more product details

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5/16" x 6" Carbon Steel Rectangle Bar A36 Hot Rolled-deskmp-00066946

5/16" x 6" Carbon Steel Rectangle Bar A36 Hot Rolled Part # mp-00066946

Dimensions

Thickness: 0.313"
Width: 6"

Select a Size or Custom Cut

+ Create Custom Cut
12″ (1 ft.) - $21.42 ea.
24″ (2 ft.) - $42.84 ea.
36″ (3 ft.) - $64.26 ea.
48″ (4 ft.) - $82.95 ea.
72″ (6 ft.) - $90.83 ea.
96″ (8 ft.) - $145.95 ea.
120″ (10 ft.) - $162.75 ea.

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

5/16" x 2 1/2" Carbon Steel Rectangle Bar A36 Hot Rolled Part # mp-00066947

Sold & Shipped by MSP Metals

Select a Size or Custom Cut

QTY

Update

$12.60 for 1

$12.60 ea.

Dimensions

Thickness: 0.313"
Width: 2.5"

Click for more details

5/16" x 2 1/2" Carbon Steel Rectangle Bar A36 Hot Rolled-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant

MTR AVAILABLE product return

product return

Non-returnable

View more product details

Click for more details

5/16" x 2 1/2" Carbon Steel Rectangle Bar A36 Hot Rolled-deskmp-00066947

5/16" x 2 1/2" Carbon Steel Rectangle Bar A36 Hot Rolled Part # mp-00066947

Dimensions

Thickness: 0.313"
Width: 2.5"

Select a Size or Custom Cut

+ Create Custom Cut
12″ (1 ft.) - $12.60 ea.
24″ (2 ft.) - $25.20 ea.
36″ (3 ft.) - $35.70 ea.
48″ (4 ft.) - $45.15 ea.
72″ (6 ft.) - $49.88 ea.
96″ (8 ft.) - $57.12 ea.
120″ (10 ft.) - $71.40 ea.

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

5/16" x 3" Carbon Steel Rectangle Bar A36 Hot Rolled Part # mp-00066948

Sold & Shipped by MSP Metals

Select a Size or Custom Cut

QTY

Update

$29.40 for 1

$29.40 ea.

Dimensions

Thickness: 0.313"
Width: 3"

Click for more details

Placeholder for future product image

Key Features

CUSTOM CUT DFARS Compliant

MTR AVAILABLE product return

product return

Non-returnable

View more product details

Click for more details

Placeholder for future product image

5/16" x 3" Carbon Steel Rectangle Bar A36 Hot Rolled Part # mp-00066948

Dimensions

Thickness: 0.313"
Width: 3"

Select a Size or Custom Cut

+ Create Custom Cut
24″ (2 ft.) - $29.40 ea.
36″ (3 ft.) - $40.95 ea.
48″ (4 ft.) - $45.15 ea.
72″ (6 ft.) - $48.30 ea.
96″ (8 ft.) - $64.37 ea.
120″ (10 ft.) - $80.43 ea.

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

5/16" x 5" Carbon Steel Rectangle Bar A36 Hot Rolled Part # mp-00066950

Sold & Shipped by MSP Metals

Select a Size or Custom Cut

QTY

Update

$17.85 for 1

$17.85 ea.

Dimensions

Thickness: 0.313"
Width: 5"

Click for more details

5/16" x 5" Carbon Steel Rectangle Bar A36 Hot Rolled-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant

MTR AVAILABLE product return

product return

Non-returnable

View more product details

Click for more details

5/16" x 5" Carbon Steel Rectangle Bar A36 Hot Rolled-deskmp-00066950

5/16" x 5" Carbon Steel Rectangle Bar A36 Hot Rolled Part # mp-00066950

Dimensions

Thickness: 0.313"
Width: 5"

Select a Size or Custom Cut

+ Create Custom Cut
12″ (1 ft.) - $17.85 ea.
24″ (2 ft.) - $35.70 ea.
36″ (3 ft.) - $53.55 ea.
48″ (4 ft.) - $71.40 ea.
72″ (6 ft.) - $81.90 ea.
96″ (8 ft.) - $131.25 ea.
120″ (10 ft.) - $164.06 ea.

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

3/8" x 5" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 9590

Select a Size or Custom Cut

QTY

Update

$18.97 for 1

$18.97 ea.

Dimensions

Thickness: 0.375"
Width: 5"

Click for more details

mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

View more product details

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk9590

3/8" x 1" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10055

Select a Size or Custom Cut

QTY

Update

$4.50 for 1

$4.50 ea.

Dimensions

Thickness: 0.375"
Width: 1"

Click for more details

mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

View more product details

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10055

3/8" x 1 1/4" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10056

Select a Size or Custom Cut

QTY

Update

$5.30 for 1

$5.30 ea.

Dimensions

Thickness: 0.375"
Width: 1.25"

Click for more details

mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

View more product details

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10056

3/8" x 1 1/2" Carbon Steel Rectangle Bar A36 Hot Rolled Part # 10057

Select a Size or Custom Cut

QTY

Update

$6.09 for 1

$6.09 ea.

Dimensions

Thickness: 0.375"
Width: 1.5"

Click for more details

mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-mob{product.code}

Key Features

CUSTOM CUT

FREE MTR Available

View more product details

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mild-steel-rectangle-bar-hot-rolled-a36-1superZoom-desk10057

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