The high quality China GBT 40MnB material is one of the more steel grades we supply, China structural steel and alloy steel. 40MnB is our main production grade, which has been approved by customers in many countries since its initial production, including our 40MnB 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 40MnB materials, and we are willing to develop together with customers from all over the world.
Also includes 40MnB steel material norm, chemical composition, mechanical properties, datasheet, 40MnB equivalent, heat treatment and temperature process of 40MnB, The peak hardness can be achieved, Contains all of the specification, welding properties, let us in 40MnB this steel grade have a more comprehensive understanding, Download the full 40MnB PDF version of this datasheet.
| C(％) | Si(％) | Mn(％) |
|---|---|---|
| 0.37-0.44 | 0.17-0.37 | 1.10-1.40 |
| B(%) | ||
| 0.0005-0.0035 |
| Rp0.2 (MPa) | Rm (MPa) | Impact KV (J) |
Elongation A (%) |
A Z (%) | Delivery | Hardness HB |
|---|---|---|---|---|---|---|
| 189 (≥) | 215 (≥) | 41 | 14 | 11 | Solution & Aging, Ann, Ausaging, Q+T | 431 |