Stainless Steel Round Bar – 321

Stainless Steel Round Bar – 321

321 stainless steel round bar is reinforced with titanium, which helps it perform well in high temperature environments. This grade resists cracking, corrosion, and scaling when exposed to heat, making it useful for aerospace, thermal, and industrial applications where stability is important.

Applications: Aircraft engines, expansion joints, thermal equipment, refinery systems, high temperature chemical processing.

Material Properties

Stainless Steel 321 Product Guide|

Stainless Steel 321 Round Bar Tolerances

33 Results

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5/8" Stainless Round Bar 321 Part # 17902

*Select a Size or Custom Cut

QTY

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$34.29 for 1

$34.29 ea.

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Price ea.

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Dimensions

Diameter: 0.625"

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stainless-round-bar-321-cold-finish-1superZoom

Material Meets These Standard(s): AMS-QQ-S-763,ASTM-A276,ASTM-A479,AMS-5645

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

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3/8" Stainless Round Bar 321 Part # 18432

*Select a Size or Custom Cut

QTY

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$10.49 for 1

$10.49 ea.

Qty

Price ea.

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Dimensions

Diameter: 0.375"

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stainless-round-bar-321-cold-finish-1superZoom

Material Meets These Standard(s): AMS-QQ-S-763,ASTM-A276,ASTM-A479,AMS-5645

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

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stainless-round-bar-321-cold-finish-1superZoom

4 3/4" Stainless Round Bar 321 Part # mp-00041848

Sold & Shipped by Slice of Stainless

QTY

Update

$1120.72 for 1

$1120.72 ea.

Dimensions

Diameter: 4.75"
Ships In: 5-6 Business Days

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stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

Material Meets These Standard(s): ASTM-A276,AMS-QQ-S-763,AMS-5645

Key Features

CUSTOM CUT

U.S.A.Made DFARS Compliant

MTR AVAILABLE product return

Non-returnable

View more product details

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

4 3/4" Stainless Round Bar 321 Part # mp-00041848

Dimensions

Diameter: 4.75"
Ships In: 5-6 Business Days

Material Meets These Standard(s): ASTM-A276, AMS-QQ-S-763, AMS-5645

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

1" Stainless Round Bar 321 Part # mp-00041830

Sold & Shipped by Slice of Stainless

*Select a Size

QTY

Update

$179.34 for 1

$179.34 ea.

Dimensions

Diameter: 1"
Ships In: 5-6 Business Days

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

Material Meets These Standard(s): ASTM-A276,AMS-QQ-S-763,AMS-5645

Key Features

CUSTOM CUT

U.S.A.Made DFARS Compliant

MTR AVAILABLE product return

Non-returnable

View more product details

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

1" Stainless Round Bar 321 Part # mp-00041830

Dimensions

Diameter: 1"
Ships In: 5-6 Business Days

Material Meets These Standard(s): ASTM-A276, AMS-QQ-S-763, AMS-5645

Select a Size

6″ (6 in.) - $179.34 ea.
12″ (1 ft.) - $195.13 ea.
24″ (2 ft.) - $213.86 ea.
36″ (3 ft.) - $239.13 ea.
48″ (4 ft.) - $263.47 ea.
72″ (6 ft.) - $320.87 ea.

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

1/2" Stainless Round Bar 321 Part # 13602

*Select a Size or Custom Cut

QTY

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$21.61 for 1

$21.61 ea.

Qty

Price ea.

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Dimensions

Diameter: 0.5"

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stainless-round-bar-321-cold-finish-1superZoom

Material Meets These Standard(s): AMS-QQ-S-763,ASTM-A276,ASTM-A479,AMS-5645

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

stainless-round-bar-321-cold-finish-1superZoom

2 3/8" Stainless Round Bar 321 Part # mp-00041822

Sold & Shipped by Slice of Stainless

*Select a Size

QTY

Update

$258.03 for 1

$258.03 ea.

Dimensions

Diameter: 2.375"
Ships In: 5-6 Business Days

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

Material Meets These Standard(s): ASTM-A276,AMS-QQ-S-763,AMS-5645

Key Features

CUSTOM CUT

U.S.A.Made DFARS Compliant

MTR AVAILABLE product return

Non-returnable

View more product details

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

2 3/8" Stainless Round Bar 321 Part # mp-00041822

Dimensions

Diameter: 2.375"
Ships In: 5-6 Business Days

Material Meets These Standard(s): ASTM-A276, AMS-QQ-S-763, AMS-5645

Select a Size

6″ (6 in.) - $258.03 ea.
12″ (1 ft.) - $346.60 ea.
24″ (2 ft.) - $494.09 ea.
36″ (3 ft.) - $648.95 ea.
48″ (4 ft.) - $798.19 ea.
72″ (6 ft.) - $1120.25 ea.

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

3" Stainless Round Bar 321 Part # mp-00041745

Sold & Shipped by Slice of Stainless

*Select a Size

QTY

Update

$310.29 for 1

$310.29 ea.

Dimensions

Diameter: 3"
Ships In: 5-6 Business Days

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

Material Meets These Standard(s): ASTM-A276,AMS-QQ-S-763,AMS-5645

Key Features

CUSTOM CUT

U.S.A.Made DFARS Compliant

MTR AVAILABLE product return

Non-returnable

View more product details

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

3" Stainless Round Bar 321 Part # mp-00041745

Dimensions

Diameter: 3"
Ships In: 5-6 Business Days

Material Meets These Standard(s): ASTM-A276, AMS-QQ-S-763, AMS-5645

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

7/16" Stainless Round Bar 321 Part # mp-00041913

Sold & Shipped by Slice of Stainless

*Select a Size

QTY

Update

$167.20 for 1

$167.20 ea.

Dimensions

Diameter: 0.4375"
Ships In: 5-6 Business Days

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

Material Meets These Standard(s): ASTM-A276,AMS-QQ-S-763,AMS-5645

Key Features

CUSTOM CUT DFARS Compliant

MTR NOT AVAILABLE product return

Non-returnable

View more product details

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

7/16" Stainless Round Bar 321 Part # mp-00041913

Dimensions

Diameter: 0.4375"
Ships In: 5-6 Business Days

Material Meets These Standard(s): ASTM-A276, AMS-QQ-S-763, AMS-5645

Select a Size

6″ (6 in.) - $167.20 ea.
12″ (1 ft.) - $170.84 ea.
24″ (2 ft.) - $168.04 ea.
36″ (3 ft.) - $171.67 ea.
48″ (4 ft.) - $175.16 ea.
72″ (6 ft.) - $188.40 ea.

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

1/205" Stainless Round Bar 321 Part # mp-00041817

Sold & Shipped by Slice of Stainless

*Select a Size

QTY

Update

$168.25 for 1

$168.25 ea.

Dimensions

Diameter: 0.505"
Ships In: 5-6 Business Days

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

Material Meets These Standard(s): ASTM-A276,AMS-QQ-S-763,AMS-5645

Key Features

CUSTOM CUT

U.S.A.Made DFARS Compliant

MTR AVAILABLE product return

Non-returnable

View more product details

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

1/205" Stainless Round Bar 321 Part # mp-00041817

Dimensions

Diameter: 0.505"
Ships In: 5-6 Business Days

Material Meets These Standard(s): ASTM-A276, AMS-QQ-S-763, AMS-5645

Select a Size

6″ (6 in.) - $168.25 ea.
12″ (1 ft.) - $172.94 ea.
24″ (2 ft.) - $172.01 ea.
36″ (3 ft.) - $177.51 ea.
48″ (4 ft.) - $182.81 ea.
72″ (6 ft.) - $199.87 ea.

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

9/16" Stainless Round Bar 321 Part # mp-00041861

Sold & Shipped by Slice of Stainless

*Select a Size

QTY

Update

$169.10 for 1

$169.10 ea.

Dimensions

Diameter: 0.5625"
Ships In: 5-6 Business Days

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

Material Meets These Standard(s): ASTM-A276,AMS-QQ-S-763,AMS-5645

Key Features

CUSTOM CUT

U.S.A.Made DFARS Compliant

MTR AVAILABLE product return

Non-returnable

View more product details

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

9/16" Stainless Round Bar 321 Part # mp-00041861

Dimensions

Diameter: 0.5625"
Ships In: 5-6 Business Days

Material Meets These Standard(s): ASTM-A276, AMS-QQ-S-763, AMS-5645

Select a Size

6″ (6 in.) - $169.10 ea.
12″ (1 ft.) - $174.64 ea.
24″ (2 ft.) - $175.20 ea.
36″ (3 ft.) - $182.22 ea.
48″ (4 ft.) - $188.98 ea.
72″ (6 ft.) - $209.12 ea.

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

11/16" Stainless Round Bar 321 Cold Finish Part # 18435

*Select a Size or Custom Cut

QTY

Update

$40.61 for 1

$40.61 ea.

Qty

Price ea.

Savings

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Dimensions

Diameter: 0.6875"

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stainless-round-bar-321-cold-finish-1superZoom

Material Meets These Standard(s): AMS-QQ-S-763,ASTM-A276,ASTM-A479,AMS-5645

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

stainless-round-bar-321-cold-finish-1superZoom

3/4" Stainless Round Bar 321 Part # mp-00041733

Sold & Shipped by Slice of Stainless

*Select a Size

QTY

Update

$172.92 for 1

$172.92 ea.

Dimensions

Diameter: 0.75"
Ships In: 5-6 Business Days

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

Material Meets These Standard(s): ASTM-A276,AMS-QQ-S-763,AMS-5645

Key Features

CUSTOM CUT

U.S.A.Made DFARS Compliant

MTR AVAILABLE product return

Non-returnable

View more product details

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

3/4" Stainless Round Bar 321 Part # mp-00041733

Dimensions

Diameter: 0.75"
Ships In: 5-6 Business Days

Material Meets These Standard(s): ASTM-A276, AMS-QQ-S-763, AMS-5645

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

13/16" Stainless Round Bar 321 Part # mp-00041760

Sold & Shipped by Slice of Stainless

*Select a Size

QTY

Update

$174.55 for 1

$174.55 ea.

Dimensions

Diameter: 0.8125"
Ships In: 5-6 Business Days

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

Material Meets These Standard(s): ASTM-A276,AMS-QQ-S-763,AMS-5645

Key Features

CUSTOM CUT

U.S.A.Made DFARS Compliant

MTR AVAILABLE product return

Non-returnable

View more product details

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

13/16" Stainless Round Bar 321 Part # mp-00041760

Dimensions

Diameter: 0.8125"
Ships In: 5-6 Business Days

Material Meets These Standard(s): ASTM-A276, AMS-QQ-S-763, AMS-5645

Select a Size

6″ (6 in.) - $174.55 ea.
12″ (1 ft.) - $185.54 ea.
24″ (2 ft.) - $195.77 ea.
36″ (3 ft.) - $212.49 ea.
48″ (4 ft.) - $228.60 ea.
72″ (6 ft.) - $268.56 ea.

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

7/8" Stainless Round Bar 321 Part # mp-00041724

Sold & Shipped by Slice of Stainless

*Select a Size

QTY

Update

$176.30 for 1

$176.30 ea.

Dimensions

Diameter: 0.875"
Ships In: 5-6 Business Days

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

Material Meets These Standard(s): ASTM-A276,AMS-QQ-S-763,AMS-5645

Key Features

CUSTOM CUT

U.S.A.Made DFARS Compliant

MTR AVAILABLE product return

Non-returnable

View more product details

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

7/8" Stainless Round Bar 321 Part # mp-00041724

Dimensions

Diameter: 0.875"
Ships In: 5-6 Business Days

Material Meets These Standard(s): ASTM-A276, AMS-QQ-S-763, AMS-5645

Select a Size

6″ (6 in.) - $176.30 ea.
12″ (1 ft.) - $189.05 ea.
24″ (2 ft.) - $202.39 ea.
36″ (3 ft.) - $222.24 ea.
48″ (4 ft.) - $241.37 ea.
72″ (6 ft.) - $287.71 ea.

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

15/16" Stainless Round Bar 321 Cold Finish Part # 18439

*Select a Size or Custom Cut

QTY

Update

$54.98 for 1

$54.98 ea.

Dimensions

Diameter: 0.9375"

Click for more details

stainless-round-bar-321-cold-finish-1superZoom

Material Meets These Standard(s): AMS-QQ-S-763,ASTM-A276,ASTM-A479,AMS-5645

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

stainless-round-bar-321-cold-finish-1superZoom

1 1/8" Stainless Round Bar 321 Part # mp-00041774

Sold & Shipped by Slice of Stainless

*Select a Size

QTY

Update

$185.75 for 1

$185.75 ea.

Dimensions

Diameter: 1.125"
Ships In: 5-6 Business Days

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

Material Meets These Standard(s): ASTM-A276,AMS-QQ-S-763,AMS-5645

Key Features

CUSTOM CUT DFARS Compliant

MTR NOT AVAILABLE product return

Non-returnable

View more product details

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

1 1/8" Stainless Round Bar 321 Part # mp-00041774

Dimensions

Diameter: 1.125"
Ships In: 5-6 Business Days

Material Meets These Standard(s): ASTM-A276, AMS-QQ-S-763, AMS-5645

Select a Size

6″ (6 in.) - $185.75 ea.
12″ (1 ft.) - $205.73 ea.
24″ (2 ft.) - $231.77 ea.
36″ (3 ft.) - $264.47 ea.
48″ (4 ft.) - $295.98 ea.
72″ (6 ft.) - $368.62 ea.

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

1 1/4" Stainless Round Bar 321 Part # 18440

*Select a Size or Custom Cut

QTY

Update

$119.86 for 1

$119.86 ea.

Qty

Price ea.

Savings

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Less

Dimensions

Diameter: 1.25"

Click for more details

stainless-round-bar-321-cold-finish-1superZoom

Material Meets These Standard(s): AMS-QQ-S-763,ASTM-A276,ASTM-A479,AMS-5645

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

stainless-round-bar-321-cold-finish-1superZoom

1 3/8" Stainless Round Bar 321 Cold Finish Part # 18441

*Select a Size or Custom Cut

QTY

Update

$132.63 for 1

$132.63 ea.

Qty

Price ea.

Savings

More

Less

Dimensions

Diameter: 1.375"

Click for more details

stainless-round-bar-321-cold-finish-1superZoom

Material Meets These Standard(s): AMS-QQ-S-763,ASTM-A276,ASTM-A479,AMS-5645

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

stainless-round-bar-321-cold-finish-1superZoom

1 1/2" Stainless Round Bar 321-Annealed Part # 12884

*Select a Size or Custom Cut

QTY

Update

$172.02 for 1

$172.02 ea.

Qty

Price ea.

Savings

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Dimensions

Diameter: 1.5"

Click for more details

stainless-round-bar-321-cold-finish-1superZoom

Material Meets These Standard(s): AMS-QQ-S-763,ASTM-A276,ASTM-A479,AMS-5645

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

stainless-round-bar-321-cold-finish-1superZoom

1 5/8" Stainless Round Bar 321 Cold Finish Part # 18442

*Select a Size or Custom Cut

QTY

Update

$125.42 for 1

$125.42 ea.

Qty

Price ea.

Savings

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Less

Dimensions

Diameter: 1.625"

Click for more details

stainless-round-bar-321-cold-finish-1superZoom

Material Meets These Standard(s): AMS-QQ-S-763,ASTM-A276,ASTM-A479,AMS-5645

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

Click for more details

stainless-round-bar-321-cold-finish-1superZoom

1 3/4" Stainless Round Bar 321 Part # mp-00041895

Sold & Shipped by Slice of Stainless

*Select a Size

QTY

Update

$214.11 for 1

$214.11 ea.

Dimensions

Diameter: 1.75"
Ships In: 5-6 Business Days

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

Material Meets These Standard(s): ASTM-A276,AMS-QQ-S-763,AMS-5645

Key Features

CUSTOM CUT DFARS Compliant

MTR NOT AVAILABLE product return

Non-returnable

View more product details

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

1 3/4" Stainless Round Bar 321 Part # mp-00041895

Dimensions

Diameter: 1.75"
Ships In: 5-6 Business Days

Material Meets These Standard(s): ASTM-A276, AMS-QQ-S-763, AMS-5645

Select a Size

6″ (6 in.) - $214.11 ea.
12″ (1 ft.) - $262.45 ea.
24″ (2 ft.) - $338.79 ea.
36″ (3 ft.) - $422.02 ea.
48″ (4 ft.) - $502.23 ea.
72″ (6 ft.) - $677.99 ea.

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

2" Stainless Round Bar 321 Part # mp-00041741

Sold & Shipped by Slice of Stainless

*Select a Size

QTY

Update

$228.91 for 1

$228.91 ea.

Dimensions

Diameter: 2"
Ships In: 5-6 Business Days

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

Material Meets These Standard(s): ASTM-A276,AMS-QQ-S-763,AMS-5645

Key Features

CUSTOM CUT

U.S.A.Made DFARS Compliant

MTR NOT AVAILABLE product return

Non-returnable

View more product details

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

2" Stainless Round Bar 321 Part # mp-00041741

Dimensions

Diameter: 2"
Ships In: 5-6 Business Days

Material Meets These Standard(s): ASTM-A276, AMS-QQ-S-763, AMS-5645

Select a Size

6″ (6 in.) - $228.91 ea.
12″ (1 ft.) - $292.04 ea.
24″ (2 ft.) - $394.63 ea.
36″ (3 ft.) - $504.23 ea.
48″ (4 ft.) - $609.84 ea.
72″ (6 ft.) - $839.41 ea.

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

2" Stainless Round Bar 321 Centerless Ground Part # 29430

*Select a Size or Custom Cut

QTY

Update

$285.39 for 1

$285.39 ea.

Dimensions

Diameter: 2"
Temper: Annealed

Click for more details

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Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details

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2 1/4" Stainless Round Bar 321 Part # mp-00041702

Sold & Shipped by Slice of Stainless

*Select a Size

QTY

Update

$249.36 for 1

$249.36 ea.

Dimensions

Diameter: 2.25"
Ships In: 5-6 Business Days

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

Material Meets These Standard(s): ASTM-A276,AMS-QQ-S-763,AMS-5645

Key Features

CUSTOM CUT

U.S.A.Made DFARS Compliant

MTR AVAILABLE product return

Non-returnable

View more product details

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

2 1/4" Stainless Round Bar 321 Part # mp-00041702

Dimensions

Diameter: 2.25"
Ships In: 5-6 Business Days

Material Meets These Standard(s): ASTM-A276, AMS-QQ-S-763, AMS-5645

Select a Size

6″ (6 in.) - $249.36 ea.
12″ (1 ft.) - $329.26 ea.
24″ (2 ft.) - $461.38 ea.
36″ (3 ft.) - $600.80 ea.
48″ (4 ft.) - $735.14 ea.
72″ (6 ft.) - $1025.69 ea.

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

2 1/2" Stainless Round Bar 321 Part # mp-00041789

Sold & Shipped by Slice of Stainless

*Select a Size

QTY

Update

$267.60 for 1

$267.60 ea.

Dimensions

Diameter: 2.5"
Ships In: 5-6 Business Days

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

Material Meets These Standard(s): ASTM-A276,AMS-QQ-S-763,AMS-5645

Key Features

CUSTOM CUT

U.S.A.Made DFARS Compliant

MTR AVAILABLE product return

Non-returnable

View more product details

Click for more details

stainless-round-bar-304-cold-finish-1superZoom_300Wx300H

2 1/2" Stainless Round Bar 321 Part # mp-00041789

Dimensions

Diameter: 2.5"
Ships In: 5-6 Business Days

Material Meets These Standard(s): ASTM-A276, AMS-QQ-S-763, AMS-5645

Select a Size

6″ (6 in.) - $267.60 ea.
12″ (1 ft.) - $365.73 ea.
24″ (2 ft.) - $530.20 ea.
36″ (3 ft.) - $702.11 ea.
48″ (4 ft.) - $867.78 ea.
72″ (6 ft.) - $1224.64 ea.

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

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