SK2
High Carbon Steel
Equivalent Grades: GB T12, JIS G4401, SK2, ASTM W1A-11 1/2, W1C-11 1/2, DIN C125W2. SK2 is a kind of die steel for cold stamping with the good properties of high hardness, wear resistance, toughness, and machining. It is mainly used for turning cutters, milling cutters, drilling cutters, reamers, scrapers, gauge, cold trimming die with small section size, punching die, metal blade, and other tools.
Carbon tool steels
Purpose
SK2 is widely used in die tool steel.
International Comparison of Materials
| EU EN | INTER ISO | USA AISI | JAPAN JIS | GERMANY DIN | CHINA GB | FRANCE AFNOR | ENGLAND BS |
|---|---|---|---|---|---|---|---|
| -- | -- | W1A-111/2 | SK2 | C125W2 | T12 | -- | -- |
| ITALY UNI | SPAIN UNE | SWEDEN SS | POLAND PN | FINLAND SFS | AUSTRIA ONORM | RUSSIA GOST | NORWAY NS |
|---|---|---|---|---|---|---|---|
| C120Ku | -- | -- | -- | -- | -- | U12 | -- |
**This comparison table is for reference only. The standards and grades of various countries have slightly different chemical compositions. Please refer to the database for details.**
Chemical Composition(JIS G4051)
| C(%) | Si(%) | Mn(%) | P(%) | S(%) | Ni(%) | Cr(%) | Mo(%) | Cu(%) |
|---|---|---|---|---|---|---|---|---|
| 1.15-1.25 | 0.15-0.35 | 0.15-0.5 | 0≦0.03 | 0≦0.03 | 0≦0.25 | 0≦0.03 | -- | 0≦0.25 |
Conditions of heat treatment
- Annealing: 690~720℃
- Hardening: 750~780℃ Oil Cooling
- Tempering: 170~190℃ Water Cooling
Application
1. Dies for drawing, stretch form, burnishing, and others.
2. Dies with the small size, simple design, light loading, such as small punch, hand shear, etc.
3. Dies for small production and impact resistance.
Size Range
| Shape | Size(mm) | ||
|---|---|---|---|
| Round Bar | 19, 25, 28, 30, 32, 34, 36, 38, 40, 44, 46, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 180, 190, 200. | ||
- Steel Application
Cutting Tools
There are many types of cutting tools, such as: milling cutters, drills, circular saw blades, reamers, PCD (Polycrystalline Diamond) cutting tools, hole drills, lathe tools, stamping tools, etc. The quality of the cutting tool material will affect the surface quality, cutting efficiency, tool life and other factors. Therefore, the selected tool material should have a high degree of hardness, wear resistance, strength, toughness and heat resistance.The materials for cutting tools application that we recommend are as below.