What is SS321 stainless steel and why is it used for exhaust?

SS321 is a type of stainless steel that includes titanium. This addition makes it more resistant to high temperatures and oxidation compared to standard stainless steel, which is beneficial for exhaust components that experience extreme heat.

What does 'mandrel bend' mean for an exhaust elbow?

A mandrel bend means the tube is supported internally during the bending process. This prevents the tube from collapsing or kinking, ensuring the inner diameter stays consistent throughout the bend and maintains optimal exhaust gas flow.

What is the '1.5D radius' on this elbow?

The '1.5D radius' refers to the tightness of the bend. 'D' represents the outer diameter of the tubing (2.13 inches in this case). A 1.5D radius means the center of the bend is 1.5 times the tubing's diameter away from the tube's centerline, indicating a relatively smooth, gradual turn.

Specifications

Brand: Stainless Bros
Part #: 701-05456-4150
UPC: 701-05456-4150

Stainless Bros 2.13in SS321 90 Deg Mandrel Bend Elbow - 1.5D Radius 16GA/.065in Wall (Leg)

Name: Stainless Bros 2.13in SS321 90 Deg Mandrel Bend Elbow - 1.5D Radius 16GA/.065in Wall (Leg)
Brand: Stainless Bros
SKU: stainless-bros-stainless-bros-2-13in-ss321-90-deg-mandrel-bend-elbow-1-5d-radius-t14-548458
Price: 44.02 USD
Availability: BackOrder

$44.02

On Backorder

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Stainless Bros is known for quality exhaust components. This 2.13in SS321 90-degree mandrel bend elbow is ideal for custom exhaust fabrication.

Key Features

Fits 2.13in OD tubing.
Made from SS321 stainless steel for high-temperature resistance and corrosion control.
Features a 90-degree bend with a 1.5D radius for smooth flow.
Mandrel-bent to maintain consistent tube diameter through the bend.
16-gauge (0.065 inch) wall thickness provides solid construction.

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About this part

Product Details

Stainless Bros is known for making reliable exhaust components, and this 90-degree elbow is a great example. It's made from SS321 stainless steel, which is a strong choice for exhaust systems because it holds up well to high temperatures and resists corrosion. This particular piece is a mandrel bend, meaning the tube keeps its full diameter through the bend, which helps maintain good exhaust flow. The 1.5D radius gives you a smooth, gradual turn, perfect for tight spots in custom exhaust setups.

With a 2.13-inch outer diameter and a 16-gauge wall thickness (that's .065 inches), this elbow is built to handle the demands of an exhaust system. Whether you're building a custom header, rerouting your exhaust, or repairing a section, this piece offers a solid foundation. The SS321 material is a step up from standard stainless steel, offering better performance in extreme heat applications.