SUS420J2 is classified as a martensitic stainless steel. Thanks to its marketability, price, and other features, it is used in a wide range of fields. When shipped with an annealed finish, it contains completely spheroidized carbides, making it easily processed.
Diameter : 80 to 600 mm ;
Length : 1000 to 9000 mm ;
| Standard | USA | Europe | UK | |
| Designation | UNS | AISI | EN | BS |
| SUS420J2 | S42000 | 420 | X30Cr13 | 420S45 |
Chemical Formula of SUS420J2 Stainless Steel
| Designation | C | Si | Mn | P | S | Cr |
| SUS420J2 | 0.26~0.40 | <=1.00 | <=1.00 | <=0.040 | <=0.030 | 12.00~14.00 |
| Designation | Finishing condition | Hardness | Tensile strength | Elongation |
| HV | N/mm2 | % | ||
| SUS420J2 | Annealed | 150~200 | 540~655 | 20~30 |
| Full hard | 280~320 | 880~1030 | 1~3 |
Properties of SUS420J2 Stainless Steel
SUS420 grade is a martensitic, higher carbon version of SUS410.
Available in different variations of carbon content 420 stainless steel is suitable for heat treatment.
420 stainless has a 13% chromium content which gives the specification a level of corrosion resistance properties. British standard grades available are 420S29, 420S37, 420S45.
Some other European stainless steel specifications 1.2083 , 1.2316 and 1.4034, both which have a higher carbon content and achieve a good Rockwell hardness when heat treated.
In Japan spec, it is known as SUS420J2.
Round stainless steel bars have the widest range of grades and sizes available. They are used in many fields, in particular automobiles, ships, aircraft, various types of precision components, industrial machines, household information equipment, and construction and civil engineering. Furthermore, because of their high durability lately their uses have been increasingly expanding to semiconductors, nuclear power and chemical plants.
Corrosion Resistance of SUS420J2 , SS420J2
Best corrosion resistance of 420 stainless steel is achieved when SUS420 is hardened and surface ground or polished. In the hardened condition SUS420 has good corrosion resistance to atmosphere, foods, fresh water, mild alkalis and acids, steam, crude oil and other similar corrosive media.
Hardening of Stainless Steel 420J2
SS420 is suitable for heat treatment up to 52 HRc or higher depending on the carbon content and size of the component. European grade 1.2083 is a high carbon type 420 stainless steel and is ideally suited for application where highest achievable hardness is required.
Applications of Stainless Steel 420J2 , SUS420J2
420 stainless steel is widely used in the medical and cutlery industries.
It is suitable for applications such as instruments, knives, hand tools, pump shafts and plastic molds. SS420 is not recommended for use in temperatures above the relevant tempering temperature, because of the reduction in mechanical properties.
1 Black Surface
2 Grounded: Bright but rough ; Not precision
3 Machining for plate: Bright and precision; Little turning scar
4 Peeled/Turned: Bright and precision; Little turning scar
5 Polished: Very Bright and precision size; Not turning scar
1 Cutting: Small pieces
2 CNC Machine: Produce as your drawing
3 Package: Bare/Nylon/Canvas/Wooden
4 Payment:T/T, L/C, O/A(request credit)
5 Transport:FOB/CFR/CIF/DDU/DDP (train/ship/Air)
EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.