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Alloy 904L Tubing


Alloy 904L is a low carbon, high alloy austenitic stainless steel which is widely used in applications where the corrosion properties of AISI 316L and AISI 317L are not adequate.

The addition of copper to this grade gives it corrosion resistant properties superior to the conventional chrome nickel stainless steels, in particular to sulfuric, phosphoric and acetic acids.



Product Specifications
ASTM A213/A269, ASME SA213 AVG wall, NACE MR0175/MR0103

ALLOY 904L (UNS N08904) CHEMICAL COMPOSITION % (MAX.)
C
Carbon
Mn
Manganese
NI
Nickel
Cr
Chromium
S
Sulfur
N
Nitrogen
Mo
Molybdenum
Cu
Copper
P
Phosphorous
Si
Silicon
.02 2.0 23.0-28.0 19.0-23.0 0.03 0.1 4-5% 1.0-2.0 0.04  1.0

THEORETICAL BURST PRESSURE
OD WALL ID PSI
0.250 0.035 0.180 16,898
0.250 0.049 0.152 23,657
0.250 0.065 0.120 31,382
0.375 0.035 0.305 11,265
0.375 0.049 0.277 15,771
0.500 0.035 0.430 8,946
0.500 0.049 0.402 12,524
0.500 0.065 0.370 16,614
0.750 0.065 0.620 11,076
1.000 0.065 0.870 8,307
Values are not guaranteed or warranted and are presented for illustration purposes only.
DIMENSIONAL TOLERANCES
OUTSIDE DIAMETER (OD) OD TOLERANCE WALL TOLERANCE
UP TO 1/2" +/- .005" +/- 15%
1/2" to 1-1/2" EXCL. +/- .005" +/- 10%
TYPICAL APPLICATIONS
Acid Production, Fertilizer Processing, Oil Refining, Pulp and Paper Processes, Gas Scrubbers, Seawater Cooling Equipment, Control and Instrumentation
SIZE RANGE
Outside Diameter (OD) Wall Thickness
1/4"- 1" .035" - .065"
Cold Finished and Bright Annealed Tube
MECHANICAL PROPERTIES
YIELD STRENGTH 0.2% OFFSET (MINIMUM KSI) 31
TENSILE STRENGTH (MINIMUM KSI) 71
ELONGATION (MINIMUM 2 INCHES) 35%
FABRICATION
Alloy 904L is non-magnetic in all conditions and has excellent formability and weldability. The austentic structure also give this grade excellent toughness, even down to cryogenic temperatures.

 Alloy 904L Tubing (Printable PDF document)