| 25CrMoS4 EN 10083-3:2002, Number: 1.7213 | Comparasion of steel grades | |
| JUS C.B9.021 | Č.47301 | |
| DIN | 25CrMoS4 | |
| BS | (708 M 25) | |
| GOST | - | |
| AISI | 5140 | |
| UNI | 25CrMoS4 | |
| NF | 25 CD 4, 25 CD 4 u | |
Under EN10083-3:2002 standard 25CrMoS4 steel plate/sheet properties and heat treatment forgings, Including 25CrMoS4 steel application and specifications, We have all specifications，Including 25CrMoS4 STEEL SHEET bars, rod, Plate, bar, square steel, rectangular steel,forgings, BEBON STEEL can own production and sales.
| Chemical elements | C | Si | Mn | P | S | Cr | Mo |
| %, by mass | 0,22 - 0,29 | £ 0,40 | 0,60 - 0,90 | max 0.025 | 0,020-0,040 | 0,90-1,20 | 0,15-0,30 |
| Permissible deviation | ± 0.02 | ± 0,03 | ± 0,04 | + 0.005 | ± 0.005 | ± 0.05 | ± 0.03 |
25CrMoS4 STEEL PLATE Chemical analysis -% by mass Mechanical properties in the quenched and tempered condition
| d ≤ 16mm oder t ≤ 8mm | 16mm < d ≤ 40mm 8mm < t ≤ 20mm | 40mm < d ≤ 100mm 20mm < t ≤ 60mm | 100mm < d ≤ 160mm 60mm < t ≤ 100mm |
160mm<d ≤ 250mm
100mm<t ≤ 160mm
|
|
| Re min (MPa) | 700 | 600 | 450 | 400 | - |
| Rm (MPa) | 900-1100 | 800-950 | 700-850 | 650-800 | - |
| A min. (%) | 12 | 14 | 15 | 16 | - |
| Z min. (%) | 45 | 55 | 60 | 60 | - |
| KV min. (J) | 50 | 50 | 50 | 45 | - |
Jominy’s hardenability band
| Distance in mm from quenched end Hardness in HRC (mm) | ||||||||||||||||
| mm | 1,5 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | |
| +H | max. | 52 | 52 | 51 | 50 | 48 | 46 | 43 | 41 | 37 | 35 | 33 | 32 | 31 | 31 | 31 |
| min. | 44 | 43 | 40 | 37 | 34 | 31 | 29 | 27 | 23 | 21 | 20 | - | - | - | - | |
| +HH* | max. | 52 | 52 | 51 | 50 | 48 | 46 | 43 | 41 | 37 | 35 | 33 | 32 | 31 | 31 | 31 |
| min. | 47 | 46 | 44 | 41 | 39 | 37 | 34 | 32 | 28 | 26 | 24 | 23 | 22 | 22 | 22 | |
| +HL* | max. | 49 | 49 | 47 | 47 | 43 | 41 | 38 | 36 | 32 | 30 | 29 | 28 | 27 | 27 | 27 |
| min. | 44 | 43 | 40 | 37 | 34 | 31 | 29 | 27 | 23 | 21 | 20 | - | - | - | - | |
Heat treatment conditions – informative
| Hardening temperature in the end quench test | Quenching temperature | Quenching in | Tempering temperature |
| 8500±50C | 840-900 0C | Water or oil | 540-680 0C |
Maximum hardness for products to be supplied in the ’’treated to improve shearability (+S)’’ or ’’soft annealed (+A)’’ condition
| +S HB max. |
+A HB max. |
| 255 | 212 |
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