Stainless Centerless Ground Round Bar 303 is one of the easiest stainless steel alloys to machine, grind, and polish. Therefore, toughness and corrosion resistance are slightly lower than most other stainless steels as a result. 303 is typically used in aircraft applications, machine parts, pump parts and valve parts, architectural applications, nuts, and bolts.
MTR MTR Available
Return Non-returnable
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Product Information

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Please note:

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Please note that this data is to be used ONLY FOR REFERENCE, NOT FOR DESIGN, and by using it,you agree that any decisions you make regarding materials for your project are at your own discretion.
Diameter
0.125
Tolerance
+/-.0001”
Alloy
303
Production Method
Centerless Ground
Metal Type
Stainless Steel
Shape
Bar-Round
Ships
1-2 Business Days
Brand
Boston Centerless
Weight/Lineal Foot
0.04 pounds
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Mechanical Properties

Density g/cm^3
8
Ultimate Tensile Strength KSI
89
Yield Tensile Strength KSI
34
Elongation % in 2 in.
44
Brinell Hardness 3000 kg load
165
Electrical Conductivity % IACS
2 min
Rockwell Hardness B Scale
85
Melting Point °F
2550 - 2590
Shear Strength KSI
62 min
Machinability %
75 min
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Chemistry Information : 303 Stainless Steel

Element
Percentage
Element
Percentage
Element
Percentage
C
0.15  max
Cr
18
Fe
69
Mn
2  max
Ni
9
Mo
0.6  max
P
0.2  max
S
0.15  max
Si
1  max

This stainless steel round bar is made from 303 alloy, known for its excellent machinability, making it easy to machine, grind, and polish. It has a diameter of 0.125" with a tight tolerance of +/- 0.0001" and is centerless ground for precision. While it offers good corrosion resistance and toughness, these are slightly lower compared to other stainless steels.

Yes, the 303 stainless round bar is commonly used in aircraft applications, machine parts, pump parts, valve parts, as well as architectural applications, nuts, and bolts due to its machinability and adequate corrosion resistance.

The product is available in cut lengths of 72 inches and 144 inches, both in stock and ready to ship within 1-2 business days, providing flexibility and fast delivery for your project needs.

Yes, a Material Test Report (MTR) is available for this product, ensuring traceability and quality verification for your purchase.

The bar weighs approximately 0.04 lb per inch, with an ultimate tensile strength of 89 ksi, yield strength of 34 ksi, and elongation of 44%, making it strong yet ductile for various applications.

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