chemical composition:
alloy | % | Cr | Mo | C | Mn | Si | S | P | N |
A4 | min | 16.5 | 1.8 | 12 | 0.2 | ||||
max | 18.5 | 2.2 | 0.08 | 15 | 0.7 | 0.02 | 0.045 | 0.3 |
The minimum mechanical properties of steel at room temperature:
Static | Tensile Strength Rm N/mm² | Yield Strength Rp0.2 N/mm² | ElongatSion A5 % | Brinell hardness HB |
Solution treatment | 480 | 255 | 25 | - |
A4 steel alloy has the following characteristics:
This is a dual-phase steel with better corrosion resistance than the commonly used austenitic steel with a molybdenum content of 2% to 3%.
Application areas of A4 steel:
Used in the manufacture of fertilizer equipment, full cycle urea plant.