ASTM O7
2013-05-16 23:22:28 Print this pageThe high quality USA ASTM O7 material is one of the more steel grades we supply, Oil-Hardening Tool Steel. O7 is our main production grade, which has been approved by customers in many countries since its initial production, including our O7 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 O7 materials, and we are willing to develop together with customers from all over the world.
Also includes O7 steel material norm, chemical composition, mechanical properties, datasheet, O7 equivalent, heat treatment and temperature process of O7, The peak hardness can be achieved, Contains all of the specification, welding properties, let us in O7 this steel grade have a more comprehensive understanding, Download the full O7 PDF version of this datasheet.
Chemical composition (wt.%) of O7
| Elements | Min.（≥） | Max.（≤） |
|---|---|---|
| C | 1.10 | 1.30 |
| Si | 0.10 | 0.60 |
| Mn | 0.20 | 1.00 |
| P | - | 0.030 |
| S | - | 0.030 |
| Cr | 0.35 | 0.85 |
| Mo | - | 0.30 |
| V | 0.15 | 0.40 |
| W | 1.00 | 2.00 |
| Ni＋Cu | - | 0.75 |
Mechanical Properties of O7
| Rp0.2 (MPa) | Rm (MPa) | Impact KV (J) |
Elongation A (%) |
A Z (%) | Delivery | Hardness HB |
|---|---|---|---|---|---|---|
| 455 (≥) | 368 (≥) | 13 | 22 | 14 | Solution & Aging, Ann, Ausaging, Q+T | 141 |
