Indonesia Stainless Steel 403 , 1.4000 , AISI403

Is stainless steel a 403?
Type 403 stainless steel is a martensitic alloy, very similar to stainless type 410, with the exception of a slightly lower maximum silicon content and a slightly lower maximum chromium content. Good levels of strength, toughness and ductility may be obtained with this alloy.
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Description

Stainless Steel Equivalent – SUS403, UNS S40300, 1.4024
aisi 403 Chemical composition

Fe, <0.15% C, 11.5-13.5% Cr, >0.75% Ni, <1.0% Mn, <0.5% Si, <0.04% P, <0.03% S

Whats is Stainless steel 403 ?

SS403 is the basic martensitic stainless steel; like most non-stainless steels it can be hardened by a “quench-and-temper” heat treatment. It contains a minimum of 11.5 per cent chromium, just sufficient to give corrosion resistance properties. It achieves maximum corrosion resistance when it has been hardened and tempered and then polished. SUS403 is a general purpose grade often supplied in the hardened, but still machinable condition, for applications where high strength and moderate heat and corrosion resistance are required.

403 stainless steel Properties

Properties Metric Imperial
Tensile strength 485 MPa 70300 psi
Yield strength (@strain 0.200 %) 310 MPa 45000 psi
Fatigue Strength (annealed, @diameter 25mm/0.984 in) 275 MPa 39900 psi
Shear modulus (typical for steel) 76.0 GPa 11000 ksi
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) 25.00% 25.00%
Izod impact (tempered) 102 J 75.2 ft-lb
Hardness, Brinell (converted from Rockwell B hardness) 139 139
Hardness, Knoop (converted from Rockwell B hardness) 155 155
Hardness, Rockwell B 80 80
Hardness, Vickers (converted from Rockwell B hardness) 153 153

403 stainless steel Corrosion Resistance

SUS403 resists dry atmosphere, fresh water, mild alkalies and acids, food, steam and hot gases. Must be hardened for maximum heat and corrosion resistance. Performance is best with a smooth surface finish. Less corrosion resistant than the austenitic grades and also less than 17% chromium ferritic alloys such as SUS430.

Is stainless steel a 403?
403 stainless steel is a martensitic alloy, very similar to stainless type 410, with the exception of a slightly lower maximum silicon content and a slightly lower maximum chromium content. Good levels of strength, toughness and ductility may be obtained with this alloy.