The high quality China GBT ML20B material is one of the more steel grades we supply, China structural steel and alloy steel. ML20B is our main production grade, which has been approved by customers in many countries since its initial production, including our ML20B 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 ML20B materials, and we are willing to develop together with customers from all over the world.
Also includes ML20B steel material norm, chemical composition, mechanical properties, datasheet, ML20B equivalent, heat treatment and temperature process of ML20B, The peak hardness can be achieved, Contains all of the specification, welding properties, let us in ML20B this steel grade have a more comprehensive understanding, Download the full ML20B PDF version of this datasheet.
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) |
|---|---|---|---|---|---|
| 0.17-0.24 | Max 0.40 | 0.50-0.80 | 0.035 | 0.035 | — |
| B(%) | Al(%) | ||||
| 0.0005-0.0035 | 0.02 |
| Rp0.2 (MPa) | Rm (MPa) | Impact KV (J) |
Elongation A (%) |
A Z (%) | Delivery | Hardness HB |
|---|---|---|---|---|---|---|
| 868 (≥) | 673 (≥) | 11 | 21 | 32 | Solution & Aging, Ann, Ausaging, Q+T | 422 |