| 28NiCrMoV8-5 EN 10250-3:1999, Number: 1.6932
|
Comparison of steel grades | |
| JUS | - | |
| DIN | 28NiCrMoV8 5 | |
| BS | - | |
| GOST | - | |
| AISI | - | |
| NF | - | |
Under EN 10250-3:1999 standard ,28NiCrMoV8-5 steel plate specifications held in the austenitic, martensitic and precipitation hardening varieties. Stocks are held in EN Standard and International standards. Below lists the 28NiCrMoV8-5 steel plate Detail Descripttion.
28NiCrMoV8-5 steel plate Chemical analysis -% by mass
| Chemical elements | C | Si | Mn | P max. | S max. |
Cr | Mo | Ni | V |
| %, by mass | 0,24- 0,32 | £ 0,40 | 0,15-0,40 | 0.035 | 0.035 | 1,00-1,50 | 0,35-0,55 | 1,80-2,10 | 0,05-0,15 |
| Permissible deviation | ± 0,02 | + 0,03 | ± 0,04 | + 0,005 | + 0,005 | ± 0,05 | ± 0,06 | ± 0,05 | ± 0,02 |
At the option the manufacturer the elements aluminium, titanium, vanadium and niobium may be added singly or in combination for grain control
purposes. Elements not quoted in tables shall not be added intentionally to the steel without the agreement of the purchaser, except for the purpose
of finishing the heat. Mechanical properties in the quenched and tempered condition
| Thickness of ruling section tR | |||||
|
Diameter in mm
|
tR ≤ 160mm | 160< tR ≤330mm | 330<tR≤660mm | ||
| Re min. (N/mm2) | 630 | 590 | 590 | ||
| Rm min. (N/mm2) | 800 | 750 | 750 | ||
| A % min. |
l-longitudinal
|
14 | 15 | 15 | |
|
tr -transverse
|
10 | 11 | 11 | ||
| KV min (J) |
l-longitudinal
|
45 | 40 | 40 | |
|
tr -transverse
|
25 | 21 | 21 | ||
1N/mm2=1MPa Heat treatment conditions
| Quenching temperature, 0C | Tempering temperature, 0C |
| 830 to 870 | 550 to 850 |
Quenching from hardening may be carried out in oil, water, or water based solutions. Caution should be observed in the use of water as a
quenching medium to avoid the risk of cracking the forgings
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