UNS 21-4N
2014-01-06 15:29:12 Print this pageThe high quality USA UNS 21-4N material is one of the more steel grades we supply, UNS SAE J 775 (2004),Engine poppet valve information report. 21-4N is our main production grade, which has been approved by customers in many countries since its initial production, including our 21-4N 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 21-4N materials, and we are willing to develop together with customers from all over the world.
Also includes 21-4N steel material norm, chemical composition, mechanical properties, datasheet, 21-4N equivalent, heat treatment and temperature process of 21-4N, The peak hardness can be achieved, Contains all of the specification, welding properties, let us in 21-4N this steel grade have a more comprehensive understanding, Download the full 21-4N PDF version of this datasheet.
Chemical composition (wt.%) of 21-4N
| Elements | Min.（≥） | Max.（≤） |
|---|---|---|
| C | - | 0.05 |
| Si | - | 0.20 |
| Mn | - | 0.50 |
| P | - | - |
| S | - | - |
| Ni | - | remaining |
| Cr | 15.00 | 17.00 |
| Al | 4.00 | 5.00 |
| Cu | - | - |
| Ti | - | 0.50 |
| Fe | 2.00 | 4.00 |
| N | - | - |
| Mo | - | 0.50 |
| B | - | 0.006 |
| Zr | - | 0.05 |
Mechanical Properties of 21-4N
| Rp0.2 (MPa) | Rm (MPa) | Impact KV (J) |
Elongation A (%) |
A Z (%) | Delivery | Hardness HB |
|---|---|---|---|---|---|---|
| 535 (≥) | 991 (≥) | 12 | 42 | 24 | Solution & Aging, Ann, Ausaging, Q+T | 423 |