UNS: S43900
EN-DIN: 1.4510

439 Oxidation resistance and corrosion resistance is superior to Type 409 in areas where temperatures may exceed the oxidation limit of Type 409 or where aqueous corrosion resistance, particularly to chlorides, is needed. Applications include: Tubular manifolds and other exhaust system with difficult to form exhaust components.

Nominal Composition

Physical Properties
At 70°F (At 20°C)

Density
0.278 lb./in³ / (7685 kg/m³)

Modulus of Elasticity (E)
28.4 x 10³ ksi / (193 x 10³MPa)

Electrical Resistivity
24.0 μ ohm.in / (60.0 μ ohm.cm)

Applicable Specifications

ASTM A240

Typical Mechanical Properties – Typical Room Temperature Mechanical Properties

Typical mechanical properties are based on AK source, ASTM A240

Condition
Annealed

Tensile Strength (UTS)
66 ksi (455 MPa)

0.2% YS
43 ksi (296 MPa)

Elongation% in 2” (50.8 mm)
32%

Hardness Rockwell
74 HRBW

**The information and data in this product data sheet are accurate to the best of our knowledge and belief, but are intended for general information only. Applications suggested for the materials are described only to help readers make their own evaluations and decisions, and are neither guarantees nor to be construed as express or implied warranties of suitability for these or other applications. Data was obtained from our melt sources with data referring to mechanical properties and chemical analyses are the result of tests performed on specimens obtained from specific locations with prescribed sampling procedures; any warranty thereof is limited to the values obtained at such locations and by such procedures. There is no warranty with respect to values of the materials at other locations. Further information should be sought from the melt sources.