Stainless Hex Bar 321 provides high strength, high temperature capability, and resistance to intergranular corrosion. 321 resists scaling at higher temperatures. Also, the addition of titanium means that welding is not suggested for this alloy. It is typically used in aerospace and defense for engine parts, heat exchangers, missile components, exhaust stacks, rocket engines, manifolds, and more.

MTR MTR Available
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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.
Max Length
144
Across Flats
1.125
Alloy
321
Production Method
Cold Finish
Metal Type
Stainless Steel
Shape
Bar-Hex
Yes
RoHS
Yes
REACH
Yes
Custom Cut Warehouse
1
Weight/Lineal Foot
3.81 pounds
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Mechanical Properties

Density g/cm^3
8
Rockwell Hardness B Scale
91
Elongation % in 2 in.
42
Ultimate Tensile Strength KSI
93
Brinell Hardness 3000 kg load
190
Yield Tensile Strength KSI
42
Shear Strength KSI
64
Electrical Conductivity % IACS
2
Melting Point °F
2550 - 2600
Machinability %
36
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Chemistry Information : 321 Stainless Steel

Element
Percentage
Element
Percentage
Element
Percentage
C
0.08
Cr
18
Fe
68
Mn
2
P
0.045
S
0.03
Ni
11
Si
1
Ti
0.15

This product is a hexagonal bar with an across flats dimension of 1.125 inches and a maximum length of 144 inches. It is cold finished for a precise and smooth surface.

Yes, the 321 stainless steel alloy provides high strength and excellent resistance to scaling and intergranular corrosion at elevated temperatures, making it ideal for aerospace and defense components like engine parts and heat exchangers.

Welding is not recommended for this alloy due to the titanium addition, which helps resist intergranular corrosion but makes welding unsuitable.

Yes, custom cut lengths are available from the warehouse, with stock lengths ranging from 12 inches up to 144 inches, and each option is in stock for immediate shipment.

Yes, MTR (Material Test Reports) are available for this product, and it complies with both RoHS and REACH regulations.

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