UNS S32900

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Chemical Composition

The following table shows the chemical composition of grade 329 stainless steel.

Element Content (%)
Iron, Fe 63
Chromium, Cr 28
Nickel, Ni 4.5
Manganese, Mn 2
Molybdenum, Mo 1.5
Silicon, Si 1
Carbon, C 0.10
Phosphorous, P 0.040
Sulfur, S 0.030

Physical Properties

The physical properties of grade 329H stainless steel are given in the following table.

Properties Metric Imperial
Density 7.80 g/cm3 0.282 lb/in³

Mechanical Properties

The mechanical properties of annealed grade 329H stainless steel are displayed in the following table.

Properties Metric Imperial
Tensile strength, ultimate 725 MPa 105000 psi
Tensile strength, yield (@0.2%) 550 MPa 79800 psi
Charpy impact 54 J 39.8 ft-lb
Elastic modulus 190 – 210 GPa 27557 – 30458 ksi
Poisson’s ratio 0.27 – 0.30 0.27 – 0.30
Elongation at break (in 50 mm) 25% 25%
Hardness, Brinell 230 230
Hardness, Knoop (converted from Brinell hardness) 253 253
Hardness, Rockwell B 96 96
Hardness, Rockwell C (converted from Brinell hardness) 20 20
Hardness, Vickers (converted from Brinell hardness) 242 242

UNS S32900