The high quality Korea KS STF4 material is one of the more steel grades we supply, Carbide for cutting tools. STF4 is our main production grade, which has been approved by customers in many countries since its initial production, including our STF4 round bars, flat bar, forgings, fasteners, tubes, wires, strips, sheets & Plates, as well as a variety of profiles, professional high precision auto-lathe processing manufacturer of clinching fasteners, axes, standoffs, screws, studs, nuts, bolt, OEM parts and special shaped turning partsthe state of delivery includes quenched and tempered, annealed, machined semi-finished products, we also have strict management of the packaging, to avoid material damage from transportation. We are the best supplier of STF4 materials, and we are willing to develop together with customers from all over the world.
Also includes STF4 steel material norm, chemical composition, mechanical properties, datasheet, STF4 equivalent, heat treatment and temperature process of STF4, The peak hardness can be achieved, Contains all of the specification, welding properties, let us in STF4 this steel grade have a more comprehensive understanding, Download the full STF4 PDF version of this datasheet.
| C(％) | Si(％) | Mn(％) | Cr(％) | Ni(％) | Mo(％) | V(%) |
|---|---|---|---|---|---|---|
| 0.50-0.60 | ≤0.35 | 0.60-1.00 | 0.60-1.00 | 1.30-2.00 | 0.20-0.50 | ＜0.20 |
| Rp0.2 (MPa) | Rm (MPa) | Impact KV (J) |
Elongation A (%) |
A Z (%) | Delivery | Hardness HB |
|---|---|---|---|---|---|---|
| 971 (≥) | 553 (≥) | 33 | 22 | 23 | Solution & Aging, Ann, Ausaging, Q+T | 332 |