Stainless Steel Grade 429 (UNS S42900)

Topics Covered

Chemical Composition
Mechanical Properties
Other Designations


Stainless steel grade 429 is a ferritic steel. It is also known as AISI Type 429 chromium steel. This steel possesses good corrosion resistance, and its weldability is better than 430 steel.

The following datasheet provides an overview of stainless steel grade 429.

Chemical Composition

The chemical composition of grade 429 stainless steel is outlined in the following table.

Element Content (%)
Chromium, Cr 14-16
Silicon, Si 1
Manganese, Mn 1
Carbon, C 0.12
Phosphorous, P 0.04
Sulfur, S 0.03
Iron, Fe Balance

Mechanical Properties

The mechanical properties of grade 429 stainless steel are displayed in the following table.

Properties Metric Imperial
Tensile strength (annealed) 490 MPa 71068 psi
Yield strength (annealed/ @strain 0.200 %) 310 MPa 44961psi
Modulus of elasticity 200 GPa 29007 ksi
Poisson’s ratio 0.27-0.30 0.27-0.30
Elongation at break (In 2", 50% cold worked) 30% 30%
Hardness, Rockwell B (annealed) 88 88

Other Designations

Equivalent materials to grade 429 stainless steel are ASTM A176 and SAE 51429.


Grade 429 stainless steel is applied in construction of internal decoration and household gadgets.

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