Shop all Products
Shop Aerospace Materials
Deals
Get a Quick Quote!
round-bar-large-drillrod-new-min-4superZoom

Alloy Steel Round Bar

-271 Products

Alloy Steel Product Guide Product   | Alloy Steel Round Bar Tolerances product

We carry Alloy Steel Round Bar in 4130 | 4140 | 4330 | 4340 | 8620 | 9310. Most of our Alloy Steel round bar/rod is available in full size and custom cut lengths.

Marketplace Icon Defense Grade Store

Sort by

Size
  • Size
  • Price:Low to High
  • Product Name: A to Z
  • Product Name: Z to A
  • Relevance
  • Price:High to Low

Close

Refine Your Results

Clear Search

Filters

Material

Alloy/Type

Production Method

Domestic

Temper

DFARS

seller

Shape

Can't find what you need?

Contact our experienced US-based customer service team for hard-to-source materials.


5/16" Alloy Steel Round Bar 4340-Normalized Cold Finish - 
Part #: 23268

5/16" Alloy Steel Round Bar 4340-Normalized Cold Finish-
Part #: 23268

Click for more details

alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom

Dimensions

  • Diameter: 0.3125"
See all available dimensions for this product
Pricing and availability for this item changes frequently. Contact us now for a fast quote.

3/8" Alloy Steel Round Bar 4130-Normalized Cold Finish - 
Part #: 7361

3/8" Alloy Steel Round Bar 4130-Normalized Cold Finish -
Part #: 7361

Click for more details

alloy-steel-round-bar-4130-normalized-cold-finish-1superZoom

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $9.28 ea.
  • 24″ (2 ft.) - $18.04 ea.
  • 36″ (3 ft.) - $24.62 ea.
  • 48″ (4 ft.) - $30.71 ea.
  • 72″ (6 ft.) - $43.34 ea.
  • 96″ (8 ft.) - $53.99 ea.
  • 144″ (12 ft.) - $67.21 ea.
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.
Create Custom Cut

QTY

$9.28 ea.
$9.28 for 1

3/8" Alloy Steel Round Bar 4340-Normalized Cold Finish - 
Part #: 7383

3/8" Alloy Steel Round Bar 4340-Normalized Cold Finish -
Part #: 7383

Click for more details

alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom

Dimensions

  • Diameter: 0.375"
See all available dimensions for this product
  • 12″ (1 ft.) - $10.50 ea.
  • 24″ (2 ft.) - $20.46 ea.
  • 36″ (3 ft.) - $27.91 ea.
  • 48″ (4 ft.) - $34.83 ea.
  • 72″ (6 ft.) - $49.18 ea.
  • 96″ (8 ft.) - $61.26 ea.
  • 144″ (12 ft.) - $76.26 ea.
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.
Create Custom Cut

QTY

$10.50 ea.
$10.50 for 1

3/8" Alloy Steel Round Bar 4140 Cold Finished Heat Treated - 
Part #: mp-00002485

3/8" Alloy Steel Round Bar 4140 Cold Finished Heat Treated -
Part #: mp-00002485

Click for more details

Sold & shipped by MSP Metals

Dimensions

  • Diameter: 0.375"
  • Ships In: 1 Business Day
See all available dimensions for this product
  • 12″ (1 ft.) - $5.22 ea.
  • 24″ (2 ft.) - $10.43 ea.
  • 36″ (3 ft.) - $15.65 ea.
  • 48″ (4 ft.) - $20.88 ea.
  • 72″ (6 ft.) - $31.31 ea.
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.
Create Custom Cut

QTY

$5.22 ea.
$5.22 for 1

7/16" Alloy Steel Round Bar 4130-Normalized Cold Finish - 
Part #: 7362

7/16" Alloy Steel Round Bar 4130-Normalized Cold Finish -
Part #: 7362

Click for more details

alloy-steel-round-bar-4130-normalized-cold-finish-1superZoom

Dimensions

  • Diameter: 0.4375"
See all available dimensions for this product
  • 12″ (1 ft.) - $15.48 ea.
  • 24″ (2 ft.) - $30.12 ea.
  • 36″ (3 ft.) - $41.10 ea.
  • 48″ (4 ft.) - $51.25 ea.
  • 72″ (6 ft.) - $72.39 ea.
  • 96″ (8 ft.) - $90.15 ea.
  • 144″ (12 ft.) - $112.23 ea.
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.
Create Custom Cut

QTY

$15.48 ea.
$15.48 for 1

7/16" Alloy Steel Round Bar 4340-Normalized Cold Finish - 
Part #: 7384

7/16" Alloy Steel Round Bar 4340-Normalized Cold Finish -
Part #: 7384

Click for more details

alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom

Dimensions

  • Diameter: 0.4375"
See all available dimensions for this product
  • 12″ (1 ft.) - $40.61 ea.
  • 24″ (2 ft.) - $76.77 ea.
  • 36″ (3 ft.) - $113.37 ea.
  • 48″ (4 ft.) - $147.00 ea.
  • 72″ (6 ft.) - $202.64 ea.
  • 96″ (8 ft.) - $259.49 ea.
  • 144″ (12 ft.) - $357.08 ea.
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.
Create Custom Cut

QTY

$40.61 ea.
$40.61 for 1

7/16" Alloy Steel Round Bar 8620-Cold Finish - 
Part #: 15005

7/16" Alloy Steel Round Bar 8620-Cold Finish -
Part #: 15005

Click for more details

alloy-steel-round-bar-8620-cold-finish-1superZoom

Dimensions

  • Diameter: 0.4375"
See all available dimensions for this product
  • 12″ (1 ft.) - $17.97 ea.
  • 24″ (2 ft.) - $35.00 ea.
  • 36″ (3 ft.) - $47.76 ea.
  • 48″ (4 ft.) - $59.57 ea.
  • 72″ (6 ft.) - $84.11 ea.
  • 96″ (8 ft.) - $104.76 ea.
  • 144″ (12 ft.) - $130.42 ea.
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.
Create Custom Cut

QTY

$17.97 ea.
$17.97 for 1

1/2" Alloy Steel Round Bar 4130-Normalized Cold Finish - 
Part #: 7363

1/2" Alloy Steel Round Bar 4130-Normalized Cold Finish -
Part #: 7363

Click for more details

alloy-steel-round-bar-4130-normalized-cold-finish-1superZoom

Dimensions

  • Diameter: 0.5"
See all available dimensions for this product
  • 12″ (1 ft.) - $13.46 ea.
  • 24″ (2 ft.) - $26.15 ea.
  • 36″ (3 ft.) - $35.71 ea.
  • 48″ (4 ft.) - $44.50 ea.
  • 72″ (6 ft.) - $62.85 ea.
  • 96″ (8 ft.) - $78.28 ea.
  • 144″ (12 ft.) - $97.45 ea.
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.
Create Custom Cut

QTY

$13.46 ea.
$13.46 for 1

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

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

Click for more details

alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom

Dimensions

  • Diameter: 0.5"
See all available dimensions for this product
  • 12″ (1 ft.) - $8.15 ea.
  • 24″ (2 ft.) - $15.90 ea.
  • 36″ (3 ft.) - $21.68 ea.
  • 48″ (4 ft.) - $27.05 ea.
  • 72″ (6 ft.) - $38.22 ea.
  • 96″ (8 ft.) - $47.60 ea.
  • 144″ (12 ft.) - $59.25 ea.
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.
Create Custom Cut

QTY

$8.15 ea.
$8.15 for 1

1/2" Alloy Steel Round Bar 4340-Normalized Cold Finish - 
Part #: 7385

1/2" Alloy Steel Round Bar 4340-Normalized Cold Finish -
Part #: 7385

Click for more details

alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom

Dimensions

  • Diameter: 0.5"
See all available dimensions for this product
  • 12″ (1 ft.) - $15.19 ea.
  • 24″ (2 ft.) - $29.55 ea.
  • 36″ (3 ft.) - $40.31 ea.
  • 48″ (4 ft.) - $50.26 ea.
  • 72″ (6 ft.) - $71.00 ea.
  • 96″ (8 ft.) - $88.42 ea.
  • 144″ (12 ft.) - $110.07 ea.
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.
Create Custom Cut

QTY

$15.19 ea.
$15.19 for 1

1/2" Alloy Steel Round Bar 8620-Cold Finish - 
Part #: 15006

1/2" Alloy Steel Round Bar 8620-Cold Finish -
Part #: 15006

Click for more details

alloy-steel-round-bar-8620-cold-finish-1superZoom

Dimensions

  • Diameter: 0.5"
See all available dimensions for this product
  • 12″ (1 ft.) - $5.09 ea.
  • 24″ (2 ft.) - $9.93 ea.
  • 36″ (3 ft.) - $13.54 ea.
  • 48″ (4 ft.) - $16.87 ea.
  • 72″ (6 ft.) - $23.85 ea.
  • 96″ (8 ft.) - $29.71 ea.
  • 144″ (12 ft.) - $36.97 ea.
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.
Create Custom Cut

QTY

$5.09 ea.
$5.09 for 1

1/2" Maraging Steel Round Bar 350-Annealed - 
Part #: 12576

1/2" Maraging Steel Round Bar 350-Annealed-
Part #: 12576

Click for more details

maraging-steel-round-bar-350-1superZoom

Dimensions

  • Diameter: 0.5"
See all available dimensions for this product
Pricing and availability for this item changes frequently. Contact us now for a fast quote.

1/2" Maraging Steel Round Bar 250-Annealed - 
Part #: 12608

1/2" Maraging Steel Round Bar 250-Annealed-
Part #: 12608

Click for more details

maraging-steel-round-bar-annealed-250-1superZoom

Dimensions

  • Diameter: 0.5"
See all available dimensions for this product
Pricing and availability for this item changes frequently. Contact us now for a fast quote.

1/2" Alloy Steel Round Bar 4340-Annealed Cold Finish - 
Part #: 25262

1/2" Alloy Steel Round Bar 4340-Annealed Cold Finish -
Part #: 25262

Click for more details

alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom

Dimensions

  • Diameter: 0.5"
See all available dimensions for this product
  • 12″ (1 ft.) - $9.45 ea.
  • 24″ (2 ft.) - $18.39 ea.
  • 36″ (3 ft.) - $25.10 ea.
  • 48″ (4 ft.) - $31.30 ea.
  • 72″ (6 ft.) - $44.21 ea.
  • 96″ (8 ft.) - $55.06 ea.
  • 144″ (12 ft.) - $68.54 ea.
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.
Create Custom Cut

QTY

$9.45 ea.
$9.45 for 1

1/2" Alloy Steel Round Bar 4140 Cold Finished Heat Treated - 
Part #: mp-00002423

1/2" Alloy Steel Round Bar 4140 Cold Finished Heat Treated -
Part #: mp-00002423

Click for more details

Sold & shipped by MSP Metals

Dimensions

  • Diameter: 0.5"
  • Ships In: 1 Business Day
See all available dimensions for this product
  • 12″ (1 ft.) - $8.92 ea.
  • 24″ (2 ft.) - $17.84 ea.
  • 36″ (3 ft.) - $26.76 ea.
  • 48″ (4 ft.) - $35.68 ea.
  • 72″ (6 ft.) - $53.52 ea.
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.
Create Custom Cut

QTY

$8.92 ea.
$8.92 for 1

1/2" Maraging Steel Round Bar 300-Annealed - 
Part #: 28409

1/2" Maraging Steel Round Bar 300-Annealed-
Part #: 28409

Click for more details

Dimensions

  • Diameter: 0.5"
See all available dimensions for this product
Pricing and availability for this item changes frequently. Contact us now for a fast quote.

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

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

Click for more details

alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom

Dimensions

  • Diameter: 0.5625"
See all available dimensions for this product
  • 12″ (1 ft.) - $27.21 ea.
  • 24″ (2 ft.) - $52.93 ea.
  • 36″ (3 ft.) - $72.25 ea.
  • 48″ (4 ft.) - $90.08 ea.
  • 72″ (6 ft.) - $127.22 ea.
  • 96″ (8 ft.) - $158.45 ea.
  • 144″ (12 ft.) - $197.22 ea.
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.
Create Custom Cut

QTY

$27.21 ea.
$27.21 for 1

5/8" Alloy Steel Round Bar 4130-Normalized Cold Finish - 
Part #: 7364

5/8" Alloy Steel Round Bar 4130-Normalized Cold Finish -
Part #: 7364

Click for more details

alloy-steel-round-bar-4130-normalized-cold-finish-1superZoom

Dimensions

  • Diameter: 0.625"
See all available dimensions for this product
  • 12″ (1 ft.) - $21.51 ea.
  • 24″ (2 ft.) - $41.87 ea.
  • 36″ (3 ft.) - $57.14 ea.
  • 48″ (4 ft.) - $71.26 ea.
  • 72″ (6 ft.) - $100.62 ea.
  • 96″ (8 ft.) - $125.33 ea.
  • 144″ (12 ft.) - $156.02 ea.
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.
Create Custom Cut

QTY

$21.51 ea.
$21.51 for 1

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

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

Click for more details

alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom

Dimensions

  • Diameter: 0.625"
See all available dimensions for this product
  • 12″ (1 ft.) - $13.28 ea.
  • 24″ (2 ft.) - $25.80 ea.
  • 36″ (3 ft.) - $35.23 ea.
  • 48″ (4 ft.) - $43.91 ea.
  • 72″ (6 ft.) - $62.01 ea.
  • 96″ (8 ft.) - $77.23 ea.
  • 144″ (12 ft.) - $96.14 ea.
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.
Create Custom Cut

QTY

$13.28 ea.
$13.28 for 1

5/8" Alloy Steel Round Bar 4340-Normalized Cold Finish - 
Part #: 7387

5/8" Alloy Steel Round Bar 4340-Normalized Cold Finish -
Part #: 7387

Click for more details

alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom

Dimensions

  • Diameter: 0.625"
See all available dimensions for this product
  • 12″ (1 ft.) - $34.10 ea.
  • 24″ (2 ft.) - $66.34 ea.
  • 36″ (3 ft.) - $90.55 ea.
  • 48″ (4 ft.) - $112.89 ea.
  • 72″ (6 ft.) - $159.46 ea.
  • 96″ (8 ft.) - $198.60 ea.
  • 144″ (12 ft.) - $247.21 ea.
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.
Create Custom Cut

QTY

$34.10 ea.
$34.10 for 1

5/8" Alloy Steel Round Bar 8620-Cold Finish - 
Part #: 15007

5/8" Alloy Steel Round Bar 8620-Cold Finish -
Part #: 15007

Click for more details

alloy-steel-round-bar-8620-cold-finish-1superZoom

Dimensions

  • Diameter: 0.625"
See all available dimensions for this product
  • 12″ (1 ft.) - $23.71 ea.
  • 24″ (2 ft.) - $46.15 ea.
  • 36″ (3 ft.) - $62.98 ea.
  • 48″ (4 ft.) - $78.51 ea.
  • 72″ (6 ft.) - $110.92 ea.
  • 96″ (8 ft.) - $138.12 ea.
  • 144″ (12 ft.) - $171.96 ea.
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.
Create Custom Cut

QTY

$23.71 ea.
$23.71 for 1

5/8" Maraging Steel Round Bar 350-Annealed - 
Part #: 12577

5/8" Maraging Steel Round Bar 350-Annealed-
Part #: 12577

Click for more details

maraging-steel-round-bar-350-1superZoom

Dimensions

  • Diameter: 0.625"
See all available dimensions for this product
Pricing and availability for this item changes frequently. Contact us now for a fast quote.

5/8" Maraging Steel Round Bar 300-Annealed - 
Part #: 12592

5/8" Maraging Steel Round Bar 300-Annealed-
Part #: 12592

Click for more details

maraging-steel-round-bar-300-1superZoom

Dimensions

  • Diameter: 0.625"
See all available dimensions for this product
Pricing and availability for this item changes frequently. Contact us now for a fast quote.

5/8" Alloy Steel Round Bar 4140 Cold Finished Heat Treated - 
Part #: mp-00002456

5/8" Alloy Steel Round Bar 4140 Cold Finished Heat Treated -
Part #: mp-00002456

Click for more details

Sold & shipped by MSP Metals

Dimensions

  • Diameter: 0.625"
  • Ships In: 1 Business Day
See all available dimensions for this product
  • 12″ (1 ft.) - $13.71 ea.
  • 24″ (2 ft.) - $27.41 ea.
  • 36″ (3 ft.) - $41.13 ea.
  • 48″ (4 ft.) - $54.84 ea.
  • 72″ (6 ft.) - $82.25 ea.
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.
Create Custom Cut

QTY

$13.71 ea.
$13.71 for 1

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

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

Click for more details

alloy-steel-round-bar-4140-annealed-cold-finish-1superZoom

Dimensions

  • Diameter: 0.6875"
See all available dimensions for this product
  • 12″ (1 ft.) - $22.44 ea.
  • 24″ (2 ft.) - $43.70 ea.
  • 36″ (3 ft.) - $59.62 ea.
  • 48″ (4 ft.) - $74.34 ea.
  • 72″ (6 ft.) - $105.01 ea.
  • 96″ (8 ft.) - $130.77 ea.
  • 144″ (12 ft.) - $162.80 ea.
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.
Create Custom Cut

QTY

$22.44 ea.
$22.44 for 1

Can't find what you're looking for?

Contact us for a custom quote