What is SS 403 stainless steel?
Sus 403 plate steel is the basic martensitic stainless steel; like most non-stainless steels Sus 403 plate steel can be hardened by a “quench-and-temper” heat treatment. Sus 403 plate steel contains a minimum of 11.5 per cent chromium, just sufficient to give corrosion resistance properties. Sus 403 plate steel achieves maximum corrosion resistance when Sus 403 plate steel has been hardened and tempered and then polished. Sus 403 plate steel 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.
Sus 403 plate steel 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
Sus 403 plate steel chemical Composition
| Element | Weight % |
| C | 0.15 |
| Mn | 1.00 |
| Si | 0.50 |
| Cr | 11.5-13.0 |
| P | 0.04 |
| S | 0.03 |
Sus 403 plate steel 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.
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