AL-6XN® Alloy Tubing

CSI stocks a large amount of AL-6XN pharmaceutical and sanitary (hygienic) tubing in sizes from 0.5 inch (12.7 mm) through 4 inch (101.6 mm).

The AL-6XN (UNS N08367) tube CSI carries goes through a rigid inspection process meeting ASTM A270, ASME SA249, and ASME SB676 specifications. It is widely accepted in pharmaceutical, biotechnology, personal and home care, food, beverage, and dairy processes.


CSI's welded AL-6XN tubing is in compliance with ASTM A270/A249/B676 and ASME SA2449/SB676.


Diameter: 1/2" (12.70 mm) - 4" (101.6 mm)

Tubing Lengths

Tubing is provided in random lengths, 20 ft. ± 1.0 in. is typical (not less than 17 ft. lengths).

Packaging & Marking

All of CSI's AL-6XN tubing is marked with a full line stencil on the tube OD for traceability.

Tubing is plastic sleeved and capped on polished and electropolished tubing.

Certification & Documentation

MTR (Material Test Report) according with EN10204, 3.1 shipped with every order.

Surface Finish Options
BPE Surface Finish CodeCSI Surface Finish CodeProduct Contact Surface

(Max Ra)*

Product Contact Surface Finish Treatment


Non-Product Contact Surface

(Max Ra)

Non-Product Contact
Surface Finish Treatment


Dimensions & Tolerances
(BPE) or (CSI)
N/AP732 µ-inch
(0.81 µm)
Mechanical Polish/As Drawn32 µ-inch
(0.81 µm)
Mechanical PolishCSI
SF1PL20 µ-inch
(0.51 µm)
Mechanical Polish/As Drawn32 µ-inch
(0.81 µm)
Mechanical PolishBPE
SF5PO20 µ-inch
(0.51 µm)
Electropolished32 µ-inch
(0.81 µm)
Mechanical PolishBPE
SF6P2525 µ-inch
(0.64 µm)
Electropolished32 µ-inch
(0.81 µm)
Mechanical PolishBPE

AL-6XN Surface Finish Designations

Technical Data
AL-6XN Material Part Number

(–PL Finish)

AL-6XN Material Part Number

(–PO Finish)

Nominal Size


Wall Thickness
T6XN-0.5X.065-W-PLT6XN-0.5X.065-W-PO½ (12.7 mm)0.065 (1.651 mm)
T6XN-0.75X.065-W-PLT6XN-0.75X.065-W-PO¾ (19.05 mm)0.065 (1.651 mm)
T6XN-1.0X.065-W-PLT6XN-1.0X.065-W-PO1 (25.4 mm)0.065 (1.651 mm)
T6XN-1.5X.065-W-PLT6XN-1.5X.065-W-PO1½ (38.1 mm)0.065 (1.651 mm)
T6XN-2.0X.065-W-PLT6XN-2.0X.065-W-PO2 (50.8 mm)0.065 (1.651 mm)
T6XN-2.5X.065-W-PLT6XN-2.5X.065-W-PO2½ (63.5 mm)0.065 (1.651 mm)
T6XN-3.0X.065-W-PLT6XN-3.0X.065-W-PO3 (76.2 mm)0.065 (1.651 mm)
T6XN-4.0X.083-W-PLT6XN-4.0X.083-W-PO4 (101.6 mm)0.083 (2.1082 mm)

For questions concerning AL-6XN tubing, contact CSI at 800.654.5635 or 417.831.1411.

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