stainless steel 403

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Description

Stainless Steel – SUS403, UNS S40300, 1.4024, AISI Type 403
sus403 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

What is SS 403 stainless steel?

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.

sus403 material equivalent astm

France: AFNOR Z 12 C 13M
Germany: DIN 1.4024
Japan: JIS SUS 403 , JIS SUS 416
United Kingdom: B.S. 420 S 29 , B.S. En. 56 B
United States: AMS 5611 , AMS 5612 , ASTM A176 , ASTM A276 , ASTM A314 , ASTM A473 , ASTM A479 , ASTM A511 , ASTM A580 , FED QQ-S-763 , MIL SPEC MIL-S-862 , SAE 51403 , SAE J405 (51403) , UNS S40300

stainless steel 403 chemical Composition

Element Weight %
C  0.15
Mn  1.00
Si  0.50
Cr  11.5-13.0
P  0.04
S  0.03

sus403 Mechanical 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

Does Type 430 stainless steel rust?

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.