The high quality USA SAE SAE NV7(4140) material is one of the more steel grades we supply, precipitation hardening. SAE NV7(4140) is our main production grade, which has been approved by customers in many countries since its initial production, including our SAE NV7(4140) 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 SAE NV7(4140) materials, and we are willing to develop together with customers from all over the world.
Also includes SAE NV7(4140) steel material norm, chemical composition, mechanical properties, datasheet, SAE NV7(4140) equivalent, heat treatment and temperature process of SAE NV7(4140), The peak hardness can be achieved, Contains all of the specification, welding properties, let us in SAE NV7(4140) this steel grade have a more comprehensive understanding, Download the full SAE NV7(4140) PDF version of this datasheet.
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Mo(％) |
|---|---|---|---|---|---|---|
| 0.37-0.44 | 0.15-0.35 | 0.65-1.10 | Max 0.035 | Max 0.04 | 0.75-1.20 | 0.15-0.25 |
| Rp0.2 (MPa) | Rm (MPa) | Impact KV (J) |
Elongation A (%) |
A Z (%) | Delivery | Hardness HB |
|---|---|---|---|---|---|---|
| 835 (≥) | 628 (≥) | 32 | 41 | 41 | Solution & Aging, Ann, Ausaging, Q+T | 244 |