High Alloy Materials
Lean Duplex 19D

Product Information for Lean Duplex 19D tubing and pipe

  Sizes   Standard Tolerances
Products OD Wall Lengths and/or coils Grades OD Wall Lengths
Subsea Umbilical Tubing

Specifications: ASTM-A789 and ASTM-A790

3/8" (9.53 mm) to 1-1/2" (38.1 mm) 0.039" (0.99 mm) to 0.125" (3.18 mm) Cut lengths to 60' (18.3 m)

Coils to 1-1/2" OD

Lean Duplex 19D ±0.005" (0.127 mm) ±10% Coils to 80,000' (24,384 m)

Physical Properties of the Lean Duplex 19D Alloy 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 in. (min.) % Grain Size Req. Max. Hardness Modulus of Elasticity (x106psi) Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) Thermal Conductivity (BTU-in/ ft2-h-°F)
Lean Duplex 19D A32001 A789, A790 90,000 620 90 65,000 450 65 25 30 Rc 7.6 180

Composition of Lean Duplex 19D tubing and pipe

Grade Lean Duplex 19D*
UNS Designation S32001
Carbon (C) Max. 0.030
Manganese (Mn) Max. 4.0 – 6.0
Phosphorous (P) Max. 0.040
Sulphur (S) Max. 0.030
Silicon (Si) Max. 1.00
Chromium (Cr) 19.5 – 21.5
Nickel (Ni) 1.0 – 3.0
Molybdenum (Mo) 0.60
Nitrogen (N) 0.05 – 0.17
Iron (Fe) Bal.
Copper (Cu)
Other Elements N/A

*Zinc Clad for Subsea Umbilical Tubing

Lean Duplex 19D Product Range

Alloy UNS Designation Werkstoff NR. Specifications*
Lean Duplex 19D S32001 A789

*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.

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