| 20MnCrS5 EN 10084-1998, Number: 1.7149 | Comparison of steel grades | |
| JUS | Č.4382 | |
| DIN 17210 | (20MnCr5; ZF 7) | |
| BS | - | |
| GOST | (18HG; 18HGT) | |
| AISI | 4820; 4826 | |
| UNI 7846 | 20MnCrS5 | |
| NF A35-551-86 | (20MC5q) | |
Under EN10084-199820 standard MnCrS5 steel plate/sheet properties and heat treatment forgings, Including 20MnCrS5 application and specifications, We have all specifications，Including 20MnCrS5 bars, rod, Plate, bar, square steel, rectangular steel,forgings
20MnCrS5 steel plate/sheet Chemical composition (cast analysis)
| Chemical elements | C | Si max | Mn | P max. | S | Cr | - | - |
| %, by mass | 0,17-0,22 | 0,40 | 1,10-1,40 | 0,035 |
0,020-0,040
|
1,00-1,30 | - | |
| Permissible deviation | ± 0,02 | + 0,03 | ± 0,05 | + 0,005 | ± 0,005 | ± 0,05 | - | - |
Hardness limits for steel
| Hardness HRC at a distance from quenched end of test piece (in milimetres) of | ||||||||||||||||
| mm | 1,5 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | |
| +H | max. | 49 | 49 | 48 | 46 | 43 | 42 | 41 | 39 | 37 | 35 | 34 | 33 | 32 | - | - |
| min. | 41 | 39 | 36 | 33 | 30 | 28 | 26 | 25 | 23 | 21 | - | - | - | - | - | |
| +HH | max. | 49 | 49 | 48 | 46 | 43 | 42 | 41 | 39 | 37 | 35 | 34 | 33 | 32 | - | - |
| min. | 44 | 42 | 40 | 37 | 34 | 33 | 31 | 30 | 28 | 26 | 25 | 24 | 23 | - | - | |
| +HL | max. | 46 | 46 | 44 | 42 | 39 | 37 | 36 | 34 | 32 | 30 | 29 | 28 | 27 | - | - |
| min. | 41 | 39 | 36 | 33 | 30 | 28 | 26 | 25 | 23 | 21 | - | - | - | - | - | |
Hardness requirements for products delivered in the conditions ’’treated to improve shearabilita’’ (+S), ’’anneled to maximum hardness requirements’’ (+A), ’’treated to hardness range’’ (+TH) or ’’treated to ferrite-pearlite structure and hardness range’’ (+FP)
| Brinell hardness in the condition | |||||
| +S max. | +A max. | +TH | +FP | ||
| min. | max. | min. | max. | ||
| 255 | 217 | 170 | 217 | 152 | 201 |
Non-metallic inclusions Requirements for microscopic degree of purity when tested in accordance with DIN 50 602 (method K) (valid for oxidic non-metallic inclusions)
| D (mm) Bars Diameter d (mm) | K Total characteristic value K (oxides) for the individual cast |
| 140 < d 200 | K 4 ≤ 50 |
| 100 < d ≤ 140 | K 4 ≤ 45 |
| 70 < d ≤ 100 | K 4 ≤ 40 |
| 35 < d ≤ 70 | K 4 ≤ 35 |
| 17 < d ≤ 35 | K 3 ≤ 40 |
| 8 < d ≤ 17 | K 3 ≤ 30 |
| d ≤ 8 | K 2≤ 35 |
Conditions for heat treating test bars and treatment of the steels
| End quenchh test Quenching, 0C | Carbunnzing temperature, 0C | Core-hardening temperature, 0C | Case-hardening temperature, 0C | Tempering, 0C |
| 870 | 880 to 980 | 860 to 900 | 780 to 820 | 150 to 200 |
Source:
Tags: 20MnCrS5
