Characteristics and uses of each series of stainless steel:400 series
400 series
a, 409L
00Cr12Ti
SUS409L
Characteristics: The cheapest model, due to the addition of Ti, has high temperature corrosion resistance and high temperature strength. It is a ferritic stainless steel (chrome steel).
Uses: Mainly used in automotive exhaust pipes, heat exchangers, containers, etc., which are not heat treated after welding.
b, 410
1Cr13
SUS410
Characteristics: It is a representative steel of martensitic steel. Although it has high strength, it is not suitable for use in harsh corrosive environments. The processability is good, and the heat treatment surface is hardened (magnetic).
Uses: Blades, mechanical parts, petroleum refining equipment, bolts, nuts, pump rods, Class 1 tableware (knives, forks) have a certain application market in Jieyang, Yangjiang and other regions in Guangdong.
c, 420J1
2Cr13
SUS420J1
Characteristics: high hardness after quenching and good corrosion resistance (magnetic).
Uses: tableware (knife), turbine blades
d, 420J2
3Cr13
SUS420J2
Characteristics: After quenching, the hardness of 420J1 steel is increased (magnetic).
Uses: mainly in the field of cutting edges, nozzles, valves, rulers, tableware (scissors, knives).
e, 430
1Cr17
SUS430
Characteristics: As a representative steel grade of ferritic steel, it has low thermal expansion rate and excellent formability and oxidation resistance.
Uses: Mainly used in heat-resistant appliances, burners, home appliances, 2 types of tableware, kitchen sinks, exterior decorative materials, bolts, nuts, CD rods, screens, etc.
