The high quality Romania STAS/SR 51Sil7A material is one of the more steel grades we supply, Alloy structural steel. 51Sil7A is our main production grade, which has been approved by customers in many countries since its initial production, including our 51Sil7A 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 51Sil7A materials, and we are willing to develop together with customers from all over the world.
Also includes 51Sil7A steel material norm, chemical composition, mechanical properties, datasheet, 51Sil7A equivalent, heat treatment and temperature process of 51Sil7A, The peak hardness can be achieved, Contains all of the specification, welding properties, let us in 51Sil7A this steel grade have a more comprehensive understanding, Download the full 51Sil7A PDF version of this datasheet.
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) |
|---|---|---|---|---|---|---|
| 0.47-0.55 | 1.50-2.00 | 0.60-0.90 | 0.040 | 0.040 | 0.30 | 0.3 |
| Cu(%) | ||||||
| 0.25 |
| Rp0.2 (MPa) | Rm (MPa) | Impact KV (J) |
Elongation A (%) |
A Z (%) | Delivery | Hardness HB |
|---|---|---|---|---|---|---|
| 945 (≥) | 368 (≥) | 32 | 21 | 33 | Solution & Aging, Ann, Ausaging, Q+T | 133 |