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Alloy Steel Round Bar 4140

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14-08-2025 - alloy steel bar-round 4140 - 1000x1000superZoom-main

Alloy Steel Round Bar 4140

Alloy Steel Round Bar 4140 is normally used for heavy-duty industrial applications. Also referred to as Chromoly steel, 4140 is known for strength, resistance to fracturing, abrasion, and impact in high stress applications.

Material Properties

Link Icon Alloy Steel 4140 Product Guide | Link Icon Alloy Steel 4140 Round Bar Tolerances

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1/2" Alloy Steel Round Bar 4140-Annealed Cold Finish Part # 15484

1/2" Alloy Steel Round Bar 4140-Annealed Cold Finish -
Part #: 15484
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$5.89 for 1
$5.89 ea.

Dimensions

  • Diameter: 0.5"
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR Available
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alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk15484

9/16" Alloy Steel Round Bar 4140-Annealed Cold Finish Part # 15485

9/16" Alloy Steel Round Bar 4140-Annealed Cold Finish -
Part #: 15485
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$22.01 for 1
$22.01 ea.

Dimensions

  • Diameter: 0.5625"
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR Available
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alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk15485

5/8" Alloy Steel Round Bar 4140-Annealed Cold Finish Part # 15486

5/8" Alloy Steel Round Bar 4140-Annealed Cold Finish -
Part #: 15486
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$9.07 for 1
$9.07 ea.

Dimensions

  • Diameter: 0.625"
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
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alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk15486

11/16" Alloy Steel Round Bar 4140-Annealed Cold Finish Part # 15487

11/16" Alloy Steel Round Bar 4140-Annealed Cold Finish -
Part #: 15487
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$24.46 for 1
$24.46 ea.

Dimensions

  • Diameter: 0.6875"
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR Available
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alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk15487

3/4" Alloy Steel Round Bar 4140-Annealed Cold Finish Part # 15488

3/4" Alloy Steel Round Bar 4140-Annealed Cold Finish -
Part #: 15488
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$11.25 for 1
$11.25 ea.

Dimensions

  • Diameter: 0.75"
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk15488

7/8" Alloy Steel Round Bar 4140-Annealed Cold Finish Part # 15489

7/8" Alloy Steel Round Bar 4140-Annealed Cold Finish -
Part #: 15489
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$15.82 for 1
$15.82 ea.

Dimensions

  • Diameter: 0.875"
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk15489

1" Alloy Steel Round Bar 4140-Annealed Cold Finish Part # 19799

1" Alloy Steel Round Bar 4140-Annealed Cold Finish -
Part #: 19799
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$24.66 for 1
$24.66 ea.

Dimensions

  • Diameter: 1"
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk19799

1 1/4" Alloy Steel Round Bar 4140-Annealed Cold Finish Part # 19800

1 1/4" Alloy Steel Round Bar 4140-Annealed Cold Finish -
Part #: 19800
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$41.31 for 1
$41.31 ea.

Dimensions

  • Diameter: 1.25"
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk19800

1 1/2" Alloy Steel Round Bar 4140-Annealed Cold Finish Part # 15490

1 1/2" Alloy Steel Round Bar 4140-Annealed Cold Finish -
Part #: 15490
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$46.44 for 1
$46.44 ea.

Dimensions

  • Diameter: 1.5"
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk15490

1 5/8" Alloy Steel Round Bar 4140-Annealed Cold Finish Part # 17849

1 5/8" Alloy Steel Round Bar 4140-Annealed Cold Finish -
Part #: 17849
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$71.76 for 1
$71.76 ea.

Dimensions

  • Diameter: 1.625"
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
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alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk17849

1 3/4" Alloy Steel Round Bar 4140-Annealed Cold Finish Part # 14538

1 3/4" Alloy Steel Round Bar 4140-Annealed Cold Finish -
Part #: 14538
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$61.43 for 1
$61.43 ea.

Dimensions

  • Diameter: 1.75"
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk14538

1 7/8" Alloy Steel Round Bar 4140-Annealed Cold Finish Part # 15491

1 7/8" Alloy Steel Round Bar 4140-Annealed Cold Finish -
Part #: 15491
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$70.57 for 1
$70.57 ea.

Dimensions

  • Diameter: 1.875"
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk15491

2" Alloy Steel Round Bar 4140-Annealed Cold Finish Part # 10587

2" Alloy Steel Round Bar 4140-Annealed Cold Finish -
Part #: 10587
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$87.39 for 1
$87.39 ea.

Dimensions

  • Diameter: 2"
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk10587

2 1/4" Alloy Steel Round Bar 4140-Annealed Cold Finish Part # 15475

2 1/4" Alloy Steel Round Bar 4140-Annealed Cold Finish -
Part #: 15475
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$82.94 for 1
$82.94 ea.

Dimensions

  • Diameter: 2.25"
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk15475

2 1/2" Alloy Steel Round Bar 4140-Annealed Cold Finish Part # 20920

2 1/2" Alloy Steel Round Bar 4140-Annealed Cold Finish -
Part #: 20920
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$105.60 for 1
$105.60 ea.

Dimensions

  • Diameter: 2.5"
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk20920

2 3/4" Alloy Steel Round Bar 4140-Annealed Cold Finish Part # 15492

2 3/4" Alloy Steel Round Bar 4140-Annealed Cold Finish -
Part #: 15492
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$128.56 for 1
$128.56 ea.

Dimensions

  • Diameter: 2.75"
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk15492

2 3/4" Alloy Steel Round Bar 4140-Annealed Hot Rolled Part # 26220

2 3/4" Alloy Steel Round Bar 4140-Annealed Hot Rolled -
Part #: 26220
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$137.95 for 1
$137.95 ea.

Dimensions

  • Diameter: 2.75"
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}

Key Features

CUSTOM CUT MTR FREE MTR Available
View more product details View more product details
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alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk26220

7mm Alloy Steel Round Bar 4140- TGP Metric 36" Length [+/- 2"] Part # 24538

7mm Alloy Steel Round Bar 4140- TGP Metric 36" Length [+/- 2"] -
Part #: 24538

Pack of 4

Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$221.73
$221.73 ea.

Dimensions

  • Diameter: 7mm
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A322 , ASTM-A193 , ASTM-A295 , ASTM-A434 , ASTM-A29

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk24538

7mm Alloy Steel Round Bar 4140- TGP Metric 72" Length [+/- 2"] Part # 24539

7mm Alloy Steel Round Bar 4140- TGP Metric 72" Length [+/- 2"] -
Part #: 24539

Pack of 2

Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$221.70
$221.70 ea.

Dimensions

  • Diameter: 7mm
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A322 , ASTM-A193 , ASTM-A295 , ASTM-A434 , ASTM-A29

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk24539

8mm Alloy Steel Round Bar 4140- TGP Metric 36" Length [+/- 2"] Part # 24540

8mm Alloy Steel Round Bar 4140- TGP Metric 36" Length [+/- 2"] -
Part #: 24540

Pack of 2

Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$164.15
$164.15 ea.

Dimensions

  • Diameter: 8mm
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A322 , ASTM-A193 , ASTM-A295 , ASTM-A434 , ASTM-A29

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk24540

8mm Alloy Steel Round Bar 4140- TGP Metric 72" Length [+/- 2"] Part # 24541

8mm Alloy Steel Round Bar 4140- TGP Metric 72" Length [+/- 2"] -
Part #: 24541

Pack of 1

Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$164.16
$164.16 ea.

Dimensions

  • Diameter: 8mm
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A322 , ASTM-A193 , ASTM-A295 , ASTM-A434 , ASTM-A29

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk24541

8" Alloy Steel Round Bar 4140-Annealed Hot Rolled -  Part # 28412

8" Alloy Steel Round Bar 4140-Annealed Hot Rolled-
Part #: 28412
Pricing and availability for this item changes frequently. Contact us now for a fast quote.

10mm Alloy Steel Round Bar 4140- TGP Metric 36" Length [+/- 2"] Part # 24542

10mm Alloy Steel Round Bar 4140- TGP Metric 36" Length [+/- 2"] -
Part #: 24542

Pack of 2

Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$223.35
$223.35 ea.

Dimensions

  • Diameter: 10mm
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A322 , ASTM-A193 , ASTM-A295 , ASTM-A434 , ASTM-A29

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk24542

10mm Alloy Steel Round Bar 4140- TGP Metric 72" Length [+/- 2"] Part # 24543

10mm Alloy Steel Round Bar 4140- TGP Metric 72" Length [+/- 2"] -
Part #: 24543

Pack of 1

Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$223.31
$223.31 ea.

Dimensions

  • Diameter: 10mm
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A322 , ASTM-A193 , ASTM-A295 , ASTM-A434 , ASTM-A29

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk24543

11mm Alloy Steel Round Bar 4140- TGP Metric 36" Length [+/- 2"] Part # 24544

11mm Alloy Steel Round Bar 4140- TGP Metric 36" Length [+/- 2"] -
Part #: 24544

Pack of 1

Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$130.11
$130.11 ea.

Dimensions

  • Diameter: 11mm
Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A322 , ASTM-A193 , ASTM-A295 , ASTM-A434 , ASTM-A29

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom-desk24544

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