| 25CrM04 EN 10083-3:2002, Number: 1.7218 | Comparison of steel grades | |
| JUS | Č.4730 | |
| DIN | 25CrM04 | |
| BS | 708 M 25, 708 A 25 | |
| GOST | 20HM, 30HM | |
| AISI | 5140 | |
| UNI | 25CrMo4 | |
| NF | 25 CD 4, 25CrM04 | |
BEBON steel has 25CrM04 steel all specifications, including 25CrM04 steel bar, rod, plate, square steel, rectangular steel, forgings.
25CrM04
25CrM04 steel Chemical analysis -% by mass:
| Chemical elements | C | Si | Mn | P | S | Cr | Mo |
| %, by mass | 0,22 - 0,29 | £ 0,40 | 0,60 - 0,90 | max 0.025 | max 0,035 | 0,90-1,20 | 0,15-0,30 |
| Permissible deviation | ± 0.02 | ± 0,03 | ± 0,04 | + 0.005 | + 0.005 | ± 0.05 | ± 0.03 |
25CrM04 steel 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 | - | - | - | - | |
25CrM04 steel 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)’’ orsoft annealed (+A)’’ condition
| +S HB max. | +A HB max. |
| 255 | 212 |
If you need 25CrM04 steel, welcome to contact BEBON. BEBON is a professional steel suplier, you can believe it completely. Becouse of our unremitting efforts, our service has already spread many countries in Europe , America, Southeast Asia, Middle East, South America, Africa, etc.
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Tags: 25CrM04
