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Stainless Steel Rolled Flat Bar

Penn Stainless Products offers a comprehensive selection of stainless steel flat bars, catering to diverse industrial needs. Our inventory offers hot rolled and cold rolled flat bars, available in different grades for the best performance in various uses.

The 304/304L stainless steel rolled flat bar is known for its great resistance to corrosion and easy shaping. It is commonly used in structures, frames, and supports. Its versatility makes it suitable for various industries, including construction and manufacturing.

316/316L stainless steel rolled flat bar contains added molybdenum and offers enhanced corrosion resistance, particularly against chlorides and other industrial solvents. This grade is ideal for marine environments, chemical processing equipment, and pharmaceutical industries where superior corrosion resistance is paramount.

The 303 stainless steel rolled flat bar is made for better machinability. It also keeps good mechanical and corrosion-resistant properties. It is commonly used in applications requiring extensive machining are fittings and fasteners.

Hot Rolled and Cold Rolled Flat Bars

Penn Stainless Products’ hot rolled flat bars are available in grades 304/304L and 316/316L. These bars are processed at high temperatures, resulting in a rougher surface finish and slightly rounded edges. They are ideal for applications where precise dimensions and a smooth finish are not critical.

We provide cold rolled flat bars in grade 303. These bars undergo processing at or near room temperature, yielding a smooth surface finish and tighter dimensional tolerances. Cold rolling improves the mechanical properties. This makes the bars good for uses that need high precision and a great surface finish.

Available Sizes

All our stainless rolled flat bars are stocked in standard 12-foot random length sections. We also offer processing services, including cutting and polishing, to meet specific requirements. For detailed size availability, please refer to our product specifications.

Applications & Functionality of Stainless Steel Rolled Flat Bars

Stainless steel rolled flat bars are integral components across various industries because of their strength, durability, and corrosion resistance. Common applications include:

  • Construction: Used in structural supports, braces, and frames, providing stability and strength to buildings and infrastructure.
  • Manufacturing: Essential in the fabrication of machinery, equipment, and components that require robust and reliable materials.
  • Automotive: Utilized in the production of vehicle parts, including chassis, brackets, and ornamental trims, owing to their strength and aesthetic appeal.
  • Food and Beverage: Employed in processing equipment, countertops, and storage units due to their hygienic properties and ease of cleaning.
  • Medical and Pharmaceutical: Used in surgical instruments, medical devices, and support structures where sterility and corrosion resistance are critical.
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Product Variations

For other sizes and grades, contact a Penn Stainless sales associate for availability and delivery.

  • A - Available in Square Bar
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(Call for Availability)
(Unavailable)
Choose Table:
17-4PH Annealed Swipe/scroll horizontally to view full table
17-4PH Annealed
Width
.75”
Width
1”
Width
1.25”
Width
1.5”
Width
2”
Width
2.5”
Width
3”
Width
4”
Thickness
.25”
 C C C
Thickness
.375”
 C C C C C
Thickness
.5”
 C C C C
Thickness
.625”
 C C C C C C C
Thickness
.75”
Thickness
1”
 C C
Thickness
1.25”
 C C
Width
.75”
Width
1”
Width
1.25”
Width
1.5”
Width
2”
Width
2.5”
Width
3”
Width
4”
303 Stainless Steel Swipe/scroll horizontally to view full table
303 Stainless Steel
Width
.5”
Width
.75”
Width
1”
Width
1.25”
Width
1.5”
Width
1.75”
Width
2”
Width
2.5”
Width
3”
Width
3.5”
Width
4”
Thickness
.125”
 C C C C C C
Thickness
.188”
 C C C C C
Thickness
.25”
 C
Thickness
.313”
 C C C C C C C C C
Thickness
.375”
Thickness
.5”
 A
Thickness
.625”
 C C
Thickness
.75”
 A
Thickness
1”
 A C
Thickness
1.25”
 A C C
Thickness
1.5”
 C C C
Thickness
2”
 A C C
Width
.5”
Width
.75”
Width
1”
Width
1.25”
Width
1.5”
Width
1.75”
Width
2”
Width
2.5”
Width
3”
Width
3.5”
Width
4”
304/304L Stainless Steel Swipe/scroll horizontally to view full table
304/304L Stainless Steel
Width
.5”
Width
.75”
Width
1”
Width
1.25”
Width
1.5”
Width
1.75”
Width
2”
Width
2.5”
Width
3”
Width
3.5”
Width
4”
Width
5”
Width
6”
Thickness
.125”
 C C C C C C C
Thickness
.188”
 C C C C C
Thickness
.25”
Thickness
.313”
 C C C C C C C C C C
Thickness
.375”
Thickness
.5”
 A
Thickness
.625”
Thickness
.75”
 A
Thickness
1”
 A
Thickness
1.25”
 A C C C C
Thickness
1.5”
 A C C
Thickness
2”
 A C C C
Width
.5”
Width
.75”
Width
1”
Width
1.25”
Width
1.5”
Width
1.75”
Width
2”
Width
2.5”
Width
3”
Width
3.5”
Width
4”
Width
5”
Width
6”
316/316L Stainless Steel Swipe/scroll horizontally to view full table
316/316L Stainless Steel
Width
.5”
Width
.75”
Width
1”
Width
1.25”
Width
1.5”
Width
1.75”
Width
2”
Width
2.5”
Width
3”
Width
3.5”
Width
4”
Width
5”
Width
6”
Thickness
.188”
 C C C C C C C C C C C
Thickness
.25”
 C C C
Thickness
.375”
 C C
Thickness
.5”
 A
Thickness
.625”
 C C C C
Thickness
.75”
 A C
Thickness
1”
 A
Thickness
1.25”
 A C C C C
Thickness
1.5”
 A C C C C
Thickness
2”
 A C C C
Width
.5”
Width
.75”
Width
1”
Width
1.25”
Width
1.5”
Width
1.75”
Width
2”
Width
2.5”
Width
3”
Width
3.5”
Width
4”
Width
5”
Width
6”
Processing

Customers can select a number of processing options to produce stainless steel bars to their exact specifications, reducing material costs, production time, scrap and internal handling.

Bar & Structural Cutting
More Info
Bar & Structural Polishing
More Info
Production Cutting
More Info
Specifications

Below you will find a brief overview of a number of stainless steel bar specifications. If you do not see a specification listed, please contact us.

ASTM B473
ASTM A479
More Info
ASTM A276
More Info
ASTM A484
ASTM A582
Value-Added Services

The following value added services can be provided by Penn Stainless Products in order to meet the exact specifications of your stainless steel bar requirements.

  • Need 55 pieces of 1″ x 2-1/4″ 303 rolled flat bar cut to 6-9/16″ long? We can process this job in a few days with our Amada CM100CNC.
  • Rapid cut of round bar 5/8″ thru 4″ dia
  • Rapid cut of Square, Hex & Rectangular bars
  • Our stainless Rolled Flat bar can be polished to your exact requirement. Please specify the number of sides that require your polishing.
  • Non standard rolled flat bar sizes can be ordered. Non standard grades can also be supplied
Heat Treating & Annealing

Penn Stainless Products can heat treat some 400 series stainless steel seamless tube. Heat treating realizes stress as a result of hardening, depending upon the chemistry of the metal being treated. Heat treating is also used for tempering, quenching, normalizing, and solution annealing.

Positive Material Identification (PMI)

In some cases, it may be necessary to complete additional positive material identification testing. Penn Stainless Products can complete this testing in house or we can work with an independent laboratory to complete the testing. Please contact us for specific requirements.

UT Testing

Ultrasonic Testing (UT) utilizes sound energy at high frequencies, in order to provide examinations and measurements of the stainless steel product. This aids in flaw detection/evaluation, dimensional measurements, etc.

Tolerances

Cold Finish Rolled Flat Tolerances:

  • When it is necessary to heat treat or heat treat and pickle after cold finishing, size tolerance are double those shown in the table.
  • Cold-finished bars over 4-1/2 inch wide or thick are produced
    • Width and thickness tolerances for such bars are not included herein.
Width (inches)Width ToleranceThickness Tolerances in Inches
Up to 1/4 InclusiveOver 1/4 Exclusive
1/16 to 3/8 (incl)+0.005
-0.005		+0.005
-0.005		+0.002
-0.002
over 3/8 to 1 (incl)+0.004
-0.004		+0.004
-0.004		+0.002
-0.002
over 1 to 2 (incl)+0.006
-0.006		+0.004
-0.004		+0.003
-0.003
over 2 to 3 (incl)+0.008
-0.008		+0.004
-0.004		+0.004
-0.004
over 3 to 4 1/2+0.010
-0.010		+0.005
-0.005		+0.005
-0.005

Cold Finish Rolled Flat Straightness Tolerance:

CF: 1/16 inch in any 5 foot; but may not exceed 1/16 X (length in ft/5)

Hot Finish Rolled Flat Tolerances:

Width (inches)Width Tolerance1/8-1/2Over
1/2 -1		Over
1-2		Over
2-4		Over
4-6		Over
6-8
to 1 (incl)+0.015
-0.015		+0.008
-0.008		+0.010
-0.010
over 1 to 2+0.031
-0.031		+0.012
-0.012		+0.015
-0.015		+0.031
-0.031
over 2 to 4+0.062
-0.031		+0.015
-0.015		+0.020
-0.020		+0.031
-0.031		+0.062
-0.031
over 4 to 6+0.093
-0.062		+0.015
-0.015		+0.020
-0.020		+0.031
-0.031		+0.062
-0.031		+0.093
-0.062
over 6 to 8+0.125
-0.156		+0.016
-0.016		+0.025
-0.025		+0.031
-0.031		+0.062
-0.031		+0.093
-0.062		+0.125
-0.156
over 8-10+0.156
-0.187		+0.020
-0.020		+0.031
-0.031		+0.031
-0.031		+0.062
-0.031		+0.093
-0.062		+0.125
-0.156

Hot Finish Rolled Flat Straightness Tolerance:

HF: 1/8 inch in any 5 foot; but may not exceed 1/8 inch X (length in ft/5)