The high quality China GBT 20R material is one of the more steel grades we supply, China structural steel and alloy steel. 20R is our main production grade, which has been approved by customers in many countries since its initial production, including our 20R 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 20R materials, and we are willing to develop together with customers from all over the world.
Also includes 20R steel material norm, chemical composition, mechanical properties, datasheet, 20R equivalent, heat treatment and temperature process of 20R, The peak hardness can be achieved, Contains all of the specification, welding properties, let us in 20R this steel grade have a more comprehensive understanding, Download the full 20R PDF version of this datasheet.
| C(％) | Si(％) | Mn(％) | P(％) | S(％) |
|---|---|---|---|---|
| Max 0.20 | 0.15-0.30 | 0.40-0.90 | 0.035 | 0.03 |
| Rp0.2 (MPa) | Rm (MPa) | Impact KV (J) |
Elongation A (%) |
A Z (%) | Delivery | Hardness HB |
|---|---|---|---|---|---|---|
| 211 (≥) | 548 (≥) | 22 | 33 | 31 | Solution & Aging, Ann, Ausaging, Q+T | 131 |