Products
C50E Steel - Nr.1.1206
Oil-Quenchable High-Carbon Non-Alloy Steel
Non-alloy steel quenchable and temperable in oil, with high carbon levels, allows pieces with rather high hardness to be obtained. Also suitable for surface tempering.
References and Comparable Standards
Standard Reference: EN ISO 683-1: 2018 (Hot-rolled products) | EN 10277: 2018 (Bright products)
| EUROPE | ITALY | GERMANY | FRANCE | UK | USA | ||
|---|---|---|---|---|---|---|---|
| EN 10083-2: 2006 EN 10277-5: 2008 |
(UNI 7845-78) | (DIN 17200-86) | (NF A 35-552-86) | (BS 970 pt.3-96) | ASTM A 29 | ||
| Grade | N° | Werkstoff | N° | ||||
| C50E | 1.1206 | C50 | Ck50 | 1.1206 | - | 080M50 | 1050 |
| C5ORPb | 1.0542 | C50 | Ck50 | 1.0542 | - | 080M50 LEADED | 10L50 |
Chemical Composition (Cast Analysis) (%)
| EUROPE | C | Si | Mn | P/max | S | Cr/max | Mo/max | Ni/max | Cu/max | Al | Pb |
|---|---|---|---|---|---|---|---|---|---|---|---|
| C50E | 0,47÷0,55 | 0,10÷0,40 | 0,60÷0,90 | 0,025 | ≤ 0,035 | 0,40 | 0,10 | 0,40 | 0,30 | - | - |
| C5ORPb | 0,020÷0,040 | - | 0,015÷0,030 |
Mechanical Properties - As Rolled Condition
| Size (mm) |
HB max to condition | Quenched and tempered (+QT) |
Normalized (+N) |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Treated to improve shearability (+S) |
Soft annealing (+A) |
Rp0,2 (MPa) min |
Rm (MPa) min |
A5 (%) min |
Z (%) min |
KV (J) min |
Rp0,2 (MPa) min |
Rm (MPa) min |
A5 (%) min |
|||
| d≤16 | 255 | 217 | 520 | 750÷900 | 13 | 30 | - | 355 | 650 | 12 | ||
| 16<d≤40 | 255 | 217 | 460 | 700÷850 | 15 | 35 | - | 320 | 610 | 14 | ||
| 40<d≤100 | 255 | 217 | 400 | 650÷800 | 16 | 40 | - | 320 | 610 | 14 | ||
| 100<d≤160 | 255 | 217 | - | - | - | - | - | 290 | 590 | 14 | ||
| 160<d≤250 | 255 | 217 | - | - | - | - | - | 290 | 590 | 14 | ||
Mechanical Properties – Bright Steel
| Size (mm) |
Rolled+Turned (+SH) |
Quenched+Tempered+Turned (+QT +SH)* |
Quenched+Tempered+Cold Drawn (+QT +C) |
Cold Drawn (+C) |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hardness HB |
Rm (MPa) | Rp0,2 (MPa) min |
Rm (MPa) min |
A5 (%) min |
KV (J) min |
Rp0,2 (MPa) min |
Rm (MPa) | A5 (%) min |
Rp0,2 (MPa) min |
Rm (MPa) | A5 (%) min |
||
| 5≤d≤10 | - | - | - | - | - | - | 610 | 870÷1070 | 7 | 590 | 770÷1100 | 5 | |
| 10<d≤16 | - | - | - | - | - | - | 580 | 830÷1030 | 7 | 520 | 730÷1080 | 6 | |
| 16<d≤40 | 179÷269 | 610÷910 | 460 | 700÷850 | 15 | - | 555 | 790÷990 | 8 | 440 | 690÷1050 | 7 | |
| 40<d≤63 | 179÷269 | 610÷910 | 400 | 650÷800 | 16 | - | 510 | 730÷930 | 9 | 390 | 650÷1030 | 8 | |
| 63<d≤100 | 179÷269 | 610÷910 | 400 | 650÷800 | 16 | - | 475 | 680÷880 | 9 | - | - | - | |
| *This values are valid also for Cold Drawn - Quenched + Tempered Condition (+C +QT). Note: For size <5 mm the mechanical properties may be agreed at the time of enquiry and order. |
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Working Temperatures Recommended
| Operation | °C |
|---|---|
| Hot forgings deformation | 850÷1150 |
| Normalizing | 830÷870 |
| Soft annealing | 650÷700 |
| Quenching in oil | 810÷850 |
| Tempering | 550÷660 |
Hardness Limits (Jominy Test)
| Limits of range | Hardness HRC at a distance from quenched end of test pieces (mm) | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 13 | 15 | 20 | 25 | 30 | |||||||
| +H | Max | 63 | 62 | 61 | 60 | 58 | 55 | 50 | 43 | 36 | 35 | 34 | 33 | 32 | 31 | 29 | 28 | |||||
| Min | 56 | 53 | 44 | 34 | 31 | 30 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 20 | - | ||||||
