The high quality China GBT ML28B material is one of the more steel grades we supply, China structural steel and alloy steel. ML28B is our main production grade, which has been approved by customers in many countries since its initial production, including our ML28B 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 ML28B materials, and we are willing to develop together with customers from all over the world.
Also includes ML28B steel material norm, chemical composition, mechanical properties, datasheet, ML28B equivalent, heat treatment and temperature process of ML28B, The peak hardness can be achieved, Contains all of the specification, welding properties, let us in ML28B this steel grade have a more comprehensive understanding, Download the full ML28B PDF version of this datasheet.
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) |
|---|---|---|---|---|---|
| 0.25-0.32 | Max 0.40 | 0.60-0.90 | 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 |
|---|---|---|---|---|---|---|
| 134 (≥) | 674 (≥) | 34 | 11 | 22 | Solution & Aging, Ann, Ausaging, Q+T | 144 |