The high quality Spain UNE El721 material is one of the more steel grades we supply, Spain structural alloy steel. El721 is our main production grade, which has been approved by customers in many countries since its initial production, including our El721 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 El721 materials, and we are willing to develop together with customers from all over the world.
Also includes El721 steel material norm, chemical composition, mechanical properties, datasheet, El721 equivalent, heat treatment and temperature process of El721, The peak hardness can be achieved, Contains all of the specification, welding properties, let us in El721 this steel grade have a more comprehensive understanding, Download the full El721 PDF version of this datasheet.
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Mo(％) |
|---|---|---|---|---|---|---|
| 0.28-0.35 | 0.15-0.40 | 0.40-0.70 | 0.035 | 0.035 | 2.30-2.80 | 0.30-0.50 |
| Rp0.2 (MPa) | Rm (MPa) | Impact KV (J) |
Elongation A (%) |
A Z (%) | Delivery | Hardness HB |
|---|---|---|---|---|---|---|
| 999 (≥) | 377 (≥) | 14 | 32 | 44 | Solution & Aging, Ann, Ausaging, Q+T | 111 |