RAJUL STEEL CENTRE
Stainless Steel Grade 439
Stainless steel grade 439 is capable of being made into complex shapes such as tubular manifolds and exhaust system components, where temperatures tend to go beyond the oxidation limit of grade 409 steel. It is also preferred where wet corrosion resistance especially to chlorides is needed.
Stainless steel grade 439 has good weldability, brightness, and pitting corrosion resistance. It polishes well, and is good for deep drawing.
Equivalent Grades Of Stainless Steel 439
Some, of the equivalent grades of Stainless 439 Are:-
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DIN 1.4510.
Chemical Composition Of Stainless Steel 439
This is the chemical Composition of Stainless Steel 439
Element Content (%)
Iron,Fe 81.3535
Chromium, Cr 17.35
Manganese, Mn 0.25
Nickel, Ni 0.20
Silicon, Si 0.35
Nitrogen, N 0.0100
Carbon, C 0.01
Phosphorous, P 0.02
Sulfur, S 0.0015
Niobium, Nb (columbium, Cb) 0.01
Molybdenum, Mo 0.10
Titanium, Ti 0.335
Mechanical Properties Of Stainless Steel 439
Properties Metric Imperial
Tensile strength (transverse at room temperature) 685 MPa 99400 psi
Tensile strength (longitudinal at room temperature) 696 MPa 101000 psi
Yield strength (transverse at room temperature) 292 MPa 42400 psi
Yield strength (longitudinal at room temperature) 301 MPa 43700 psi
Compressive yield strength 365 MPa 52900 psi
Elastic modulus 197GPa 28573 ksi
Poisson's ratio 0.27-0.30 0.27-0.30
Elongation at break (longitudinal at room temperature) 56% 56%
Elongation at break (transverse at room temperature) 62.50% 62.50%
Hardness, Rockwell B (transverse at room temperature) 85 85
Hardness, Rockwell B (longitudinal at room temperature) 85 85
Thermal Properties Of Stainless Steel 439
Properties Metric Imperial
Thermal expansion co-efficient 16.6 µm/m°C 9.22 µin/in°F
Thermal (@ 100°C/212°F) 16.3 W/mK 113 BTU in/hr.ft².°F