304

Product Information

304/304L/304LN/304H Pipe and Tubing


  Sizes   Standard Tolerances
Products OD Wall Lengths and/or coils Grades OD Wall Lengths
Welded Austenitic Steel Boiler, Super Heater, Heat-Exchangers & Condenser Tubes

Specifications: ASTM-A249, ASME-SA249, ASTM-A688, ASME-SA688

3/16" (4.76 mm) to 4" (101.6 mm)

Metric sizes available

0.020" (0.51 mm) to 0.220" (5.59 mm) Random or cut lengths up to 90' (27.4 m) Coils to 1-1/2" OD 304/304L/
304LN/304H
Under 1" (25.4 mm) ±0.004" (0.10 mm) 1" (25.4 mm) to
1-1/2" (38.1 mm) ±0.006" (0.15 mm)
>1-1/2" (38.1 mm) to 2" (50.8 mm) ±0.008" (0.20 mm)
>2" (50.8 mm) to 2-1/2" (63.5 mm) ±0.010" (0.25 mm)
>2-1/2" (63.5 mm) to 3" (76.2 mm) ±0.012" (0.30 mm)
3" (76.2 mm) to 4" (101.6 mm) ±0.015" (0.38 mm)
±10% Randoms up to +2" (50.8 mm) Cuts +1/8" (3 mm) -0" Coils to 80,000' (24,384 m)
Pressure & Corrosion Tubing

Meets or exceeds requirements for welded

Specifications: ASTM-A269, ASTM-A1016, and ASTM-A632

1/16" (1.59 mm) to 4" (101.6 mm)

Metric sizes available

0.010" (0.25 mm) to 0.220" (5.59 mm) Random or cut lengths up to 90' (27.4 m) Coils to 1-1/2" OD 304/304L/
304H
<1-1/2" (38.1 mm) ±0.005" (0.13 mm) 1-1/2" (38.1 mm) to 3" (76.2 mm) ±0.010" (0.25 mm)
3-1/2" (88.9 mm) to 4" (101.6 mm) ±0.015" (0.38 mm)
±10% Randoms up to +2" (50.8 mm) Cuts +1/8" (3 mm) -0" Coils to 80,000' (24,384 m)
Beverage Tubing 1/4"(6.35 mm) 5/16" (7.94 mm) 3/8" (9.53 mm) 1/2" (12.7 mm)

Metric sizes available

0.020" (0.51 mm) to 0.028" (0.71 mm) Random or cut lengths up to 40' (12.2 m) 304/304L/
304H
±0.005" (0.13 mm) ±10% Randoms up to +2" (50.8 mm) Cuts +1/8" (3 mm) -0" Coils to 15,000' (4,572 m)

Instrumentation Tubing

Specifications: ASTM-A269 and ASTM-A632
1/16" (1.59 mm) to 1/2" (12.7 mm)

Metric sizes available

0.010" (0.25 mm) to 0.065" (1.65 mm) Random or cut lengths up to 40' (12.2 m) 304/304L/
304H
±0.005" (0.13 mm) ±10% Randoms up to +2" (50.8 mm) Cuts +1/8" (3 mm) -0"
Food/Dairy Tubing, Pharmaceutical/ BioPharmaceutical Tubing, High Purity Tubing, Ultra High Purity Tubing 1/2" (12.7 mm) to 8" (203.2 mm) 0.049" (1.24 mm) to 0.109" (2.77 mm) 20' (6.1 m) stock lengths. Other lengths available upon request. 304/304L
1/2" (12.7 mm) ±0.005" (0.13 mm)
3/4" (19.1 mm) ±0.005" (0.13 mm)
1" (25.4 mm) ±0.005" (0.13 mm)
1-1/2" (38.1 mm) ±0.008" (0.20 mm)
2" (50.8 mm) ±0.008" (0.20 mm)
2-1/2" (63.5 mm) ±0.010" (0.25 mm)
3" (76.2 mm) ±0.010" (0.25 mm)
4" (101.6 mm) ±0.015" (0.38 mm)
6" (152.4 mm) ±0.030" (0.76 mm)
8" (203.2 mm) +0.061" (1.55 mm), -0.031" (0.79 mm)
±10%
±10%
±10%
±10%
±10%
±10%
±10%
±10%
±10%
±10%
+1/8" (3 mm) -0"
+1/8" (3 mm) -0"
+1/8" (3 mm) -0"
+1/8" (3 mm) -0"
+1/8" (3 mm) -0"
+1/8" (3 mm) -0"
+1/8" (3 mm) -0"
+1/8" (3 mm) -0"
+1" (25.4 mm) -0"
+1" (25.4 mm) -0"

Physical Properties of 304/304L/304LN/304H Alloys in the Annealed Condition at -20°F to +100°F


      Tensile Strength Yield Strength            
Alloy UNS Designation Spec. psi MPa ksi psi MPa ksi Elongation in 2 inches (min.) % Grain Size Req. Max. Hardness Modulus of Elasticity (x106 psi) Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) Thermal Conductivity (BTU-in/ft2-h-°F)
304 S30400 A249, A312 75,000 515 75 30,000 205 30 35 90 Rb 28.0 9.2 116
304L S30403 A270 A312 70,000 485 70 25,000 170 25 35 90 Rb 28.0 9.2 116
304LN S30453 A249, A688 75,000 515 75 30,000 205 30 35 90 Rb 28.0 9.2 116
304H A30409 A249, A312 75,000 515 75 30,000 205 30 35 7 or coarser 90 Rb 28.0 9.2 116

Composition of 304/304L/304LN/304H tubing and pipe


Grade 304 304L 304LN 304H
UNS Designation S30400 S30403 S30453 S30409
Carbon (C) Max. 0.08 0.030* 0.030 0.04 – 0.10
Manganese (Mn) Max. 2.00 2.00 2.00 2.00
Phosphorous (P) Max. 0.045 0.045 0.045 0.045
Sulphur (S) Max. 0.030 0.030 0.030 0.030
Silicon (Si) Max. 1.00 1.00 1.00 1.00
Chromium (Cr) 18.0–20.0 18.0–20.0 18.0–20.0 18.0–20.0
Nickel (Ni) 8.0–11.0 8.0–11.0 8.0–11.0 8.0–11.0
Molybdenum (Mo)
Nitrogen (N) 0.10–0.15
Iron (Fe) Bal. Bal. Bal. Bal.
Other Elements

* Maximum carbon content of 0.04% acceptable for drawn tubes


304/304L/304LN/304H Product Range


Alloy UNS Designation Werkstoff NR. Specifications*
304 S30400 1.4301 A269, A/SA249, A/SA312, A632, A/SA688, A270
304L S30403 1.4306 A269, A/SA249, A/SA312, A629, A632, A/SA688, A270
304LN S30453 1.4311 A/SA249, A/SA688
304H S30409 1.4948 A269, A/SA249, A/SA312, A/SA688

*Note: The specifications noted including ASTM, ASME, or other applicable authorities are correct at the time of publication. Other specifications may apply for use of these materials in different applications.