439 Stainless Steel Properties

Corrosion Resistance: 439 stainless steel is known for its excellent corrosion resistance in highly corrosive environments, including acidic and alkaline environments. It is resistant to corrosion from chemicals, solvents, and salts.

Strength: 439 stainless steel has moderate strength, making it suitable for applications that require moderate mechanical strength. It has a minimum tensile strength of 415 MPa and a minimum yield strength of 205 MPa.

Weldability: 439 stainless steel is known for its good weldability, making it a popular choice for welding, brazing, and soldering. It can be welded using common welding techniques, such as TIG, MIG, and stick welding.

Ductility: 439 stainless steel has good ductility, which means that it can be easily formed and shaped without cracking or breaking. This property makes it ideal for applications that require complex shapes or designs.

Magnetic Properties: 439 stainless steel is magnetic in all conditions.

Heat Resistance: 439 stainless steel has good heat resistance up to 815°C (1500°F). It can be used in high-temperature applications such as exhaust systems, mufflers, and catalytic converters.

Chemical Composition

The chemical composition of grade 439 stainless steel is outlined in the following table.

ElementContent (%)
Iron, Fe81.3535
Chromium, Cr17.35
Silicon, Si0.35
Titanium, Ti0.335
Manganese, Mn0.25
Nickel, Ni0.200
Molybdenum, Mo0.1
Niobium, Nb (columbium, Cb)0.02
Phosphorous, P0.02
Nitrogen, N0.0100
Carbon, C0.01
Sulfur, S0.0015

Mechanical Properties

The mechanical properties of grade 439 stainless steel are displayed in the following table.

Tensile strength (annealed)438 MPa63500 psi
Yield strength (annealed/ @strain 0.200 %)263 MPa38100 psi
Modulus of elasticityGPaksi
Poisson’s ratio0.270 - 0.2900.270 - 0.290
Elongation at break (In 2", 50% cold worked)2.80%2.80%
Hardness, Rockwell B (annealed)72.972.9
Seraphinite AcceleratorOptimized by Seraphinite Accelerator
Turns on site high speed to be attractive for people and search engines.