| 37Cr4 EN 10083-3:2002, Number: 1.7034
|
Comparison of steel grades | |
| JUS | Č.4134 | |
| DIN | 37Cr4 | |
| GOST | SH10, 40H | |
| AISI | A322, 5135 | |
| BS | 530A36, 530M36 | |
| UNI | 37Cr4 | |
| NF | 37Cr4, 38C4 | |
37Cr4 steel sheet Chemical analysis -% by mass
| Chemical elements | C | Si | Mn | P max. | S max. |
Cr | - | - | - |
| %, by mass | 0,34- 0,41 | £ 0,40 | 0,60 - 0,90 | 0.035 | 0.035 | 0,90-1,20 | - | - | |
| Permissible deviations | ± 0.02 | + 0,03 | ± 0,04 | + 0.005 | + 0.005 | ± 0.05 | - | - | - |
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 quenchedand 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) | 750 | 630 | 510 | - | - |
| Rm (MPa) | 950-1150 | 850-1000 | 750-900 | - | - |
| A min. (%) | 11 | 13 | 14 | - | - |
| Z min. (%) | 35 | 40 | 40 | - | - |
| KV min. (J) | 30 | 35 | 35 | - | - |
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. | 59 | 59 | 58 | 57 | 55 | 52 | 50 | 48 | 42 | 39 | 37 | 36 | 35 | 34 | 33 |
| min. | 51 | 50 | 48 | 44 | 39 | 36 | 33 | 31 | 26 | 24 | 22 | 20 | - | - | - | |
| +HH* | max. | 59 | 59 | 58 | 57 | 55 | 52 | 50 | 48 | 42 | 39 | 37 | 36 | 35 | 34 | 33 |
| min. | 54 | 53 | 51 | 48 | 44 | 41 | 39 | 37 | 31 | 29 | 27 | 25 | 24 | 23 | 22 | |
| +HL* | max. | 56 | 56 | 55 | 53 | 50 | 47 | 44 | 42 | 37 | 34 | 32 | 31 | 30 | 29 | 28 |
| min. | 51 | 50 | 48 | 44 | 39 | 36 | 33 | 31 | 26 | 24 | 22 | 20 | - | - | - | |
Heat treatment conditions – informative
| Hardening temperature in the end quench test | Quenching temperature | Quenching in | Tempering temperature |
| 8500±50C | 825-890 0C | Oil or water | 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 | 235 |
| 37Cr4 EN 10250-3:1999, Number: 1.7034
|
Comparison of steel grades | |
| JUS | Č.4134 | |
| DIN | 37Cr4 | |
| GOST | SH10, 40H | |
| AISI | A322, 5135 | |
| BS | 530A36, 530M36 | |
| UNI | 37Cr4 | |
| NF | 37Cr4, 38C4 | |
Chemical analysis -% by mass
| Chemical elements | C | Si | Mn | P max. | S max. |
Cr | - | - | - |
| %, by mass | 0,34- 0,41 | £ 0,40 | 0,60 - 0,90 | 0.035 | 0.035 | 0,90-1,20 | - | - | |
| Permissible deviations | ± 0.02 | + 0,03 | ± 0,04 | + 0.005 | + 0.005 | ± 0.05 | - | - | - |
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
| Trickness of ruling section tR | |||
|
Diameter in mm
|
≤ 70mm tR (longitudinal) | 70< tR ≤160mm | 160<tR≤330mm |
|
Re min (N/mm2)
|
510 | - | - |
|
Rm min (N/mm2)
|
750 | - | - |
|
A % min..
|
14 | - | - |
|
KV min (J)
|
35 | - | - |
Heat treatment conditions
| Quenching temperature, 0C | Tempering temperature, 0C |
| 825 to 865 | 540 to 680 |
Source:
Tags: 37Cr4
