| 18NiCr5-4 EN 10084-1998, Number: 1.5810 | Comparison of steel grades | |
| JUS | - | |
| DIN | - | |
| BS | - | |
| GOST | - | |
| AISI | - | |
| UNI | - | |
| NF | 20NC6 | |
Under EN10084-1998 standard 18NiCr5-4 steel plate/sheet properties and heat treatment forgings, Including 18NiCr5-4 steel application and specifications, We have all specifications，Including 18NiCr5-4STEEL SHEET bars, rod, Plate, bar, square steel, rectangular steel,forgings, BEBON STEEL can own production and sales.
18NiCr54 STEEL PLATE Chemical composition (cast analysis)
| Chemical elements | C | Si max | Mn | P max. | S | Cr | Ni | - |
| %, by mass | 0,16-0,21 | 0,40 | 0,60-0,90 | 0,035 | ≤ 0,035 | 0,90-1,20 | 1,20-1,50 | |
| Permissible deviation | ± 0,02 | + 0,03 | ± 0,04 | + 0,005 | + 0,005 | ± 0,05 | ± 0,03 | - |
18NiCr54 STEEL SHEET Hardness limits for steel
| Hardness HRC at a distance from quenched end of test piece (in milimetres) of
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| mm | 1,5 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | ||
| +H | max. | 49 | 48 | 46 | 44 | 42 | 39 | 37 | 36 | 34 | 32 | 31 | 31 | 30 | - | - | |
| min. | 41 | 39 | 35 | 32 | 29 | 27 | 25 | 24 | 21 | 20 | - | - | - | - | - | ||
| +HH | max. | 49 | 48 | 46 | 44 | 42 | 39 | 37 | 36 | 34 | 32 | 31 | 31 | 30 | - | - | |
| min. | 44 | 42 | 39 | 36 | 33 | 31 | 29 | 28 | 25 | 24 | 23 | 23 | 22 | - | - | ||
| +HL | max. | 46 | 45 | 42 | 40 | 38 | 35 | 33 | 32 | 30 | 28 | 27 | 27 | 26 | - | - | |
| min. | 41 | 39 | 35 | 32 | 29 | 27 | 25 | 24 | 21 | 20 | - | - | - | - | - | ||
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 | 223 | 170 | 223 | 156 | 207 | |
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 |
| 880 | 880 to 980 | 840 to 880 | 780 to 820 | 150 to 200 |
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Tags: 18NiCr5-4
