From the Forger:
“SS420J2” refers to a specific grade of stainless steel, classified as a martensitic stainless steel, commonly known as “420J2” steel; it is characterized by good corrosion resistance, high hardness when properly heat-treated, and is often used in applications requiring a sharp edge, like knives and surgical instruments, due to its ability to hold a fine polish.
Key points about SS420J2:
Type of steel:Â Martensitic stainless steel
Main feature:Â Excellent hardenability, allowing for high edge retention when properly heat treated.
Common applications:Â Knife blades, surgical instruments, cutting tools
Equivalent designations:Â SUS420J2 (JIS standard), 1.4028 (EN standard)
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