In this post I'll talk about AISI 420. First let's describe it and then have a look at its material's properties.
What is AISI 420?AISI 420 stainless steel is a high-carbon steelthat can also be hardened through heat treatment. This grade has the highest hardness among all the stainless steel grades with 12% chromium.
ApplicationShear blades. Needle valves. Surgical equipment. Cutlery.
Ok let's start with AISI 420 Chemical Composition.
C, Carbon0.15 min.
Mn, Manganese max.1.00
P, Phosphorus max.0.040
S, Sulfur max.0.030
Si, Silicon max.1.00
Ni, Nickel max.0.75
Mo, Molybdenum max.0.50
Learn more about Chemical Composition.
Tensile Strength690 MPa
Learn more about Tensile Strength.
Elongation (min.)15 %.
Learn more about Elongation.
Learn more about Hardness.
Density7.7 g/cm3, 7700 kg/m3.
Learn more about Density.
Elastic Modulus190 GPa.
Learn more about Elastic Modulus.
Learn more about Poisson's ratio.
Allowable Stress or Factor of SafetyDepends on the project (And its factor of safety).
Learn more about Allowable Stress or Factor of Safety.
AISI ClassroomAre you having trouble understanding the basics of AISI?
What is AISI: Classification and specification?
This video will walk you through:
ReferencesASTM A240 and other references.
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