Products
C40E Steel - Nr.1.1186 C40R - Nr.1.1189
Water and Oil Quenchable Non-Alloy Steel
Non-alloy steel quenchable and temperable in water and oil, allows higher mechanical characteristics to be obtained. It is one of the most used steels in Europe.
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° | ||||
| C40E | 1.1186 | C40 | Ck40 | 1.1186 | XC38 | 080M40 | 1040 |
| C40R | 1.1189 | Cm40 | 1.1189 | ||||
Chemical Composition (Cast Analysis) (%)
| EUROPE | C | Si | Mn | P/max | S | Cr/max | Mo/max | Ni/max | Cu/max | Al | Pb |
|---|---|---|---|---|---|---|---|---|---|---|---|
| C40E | 0,37÷0,44 | 0,10÷0,40 | 0,50÷0,80 | 0,025 | ≤ 0,035 | 0,40 | 0,10 | 0,40 | 0,30 | - | - |
| C40R | 0,020÷0,040 | 0,020÷0,050 | - | ||||||||
| C40RPb | 0,020÷0,040 | 0,020÷0,050 | 0,15÷0,30 |
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 | it can be sheared without heat treatment |
- | 460 | 650÷800 | 16 | 35 | 20 | 320 | 580 | 16 | ||
| 16<d≤40 | - | 400 | 630÷780 | 18 | 40 | 20 | 290 | 550 | 17 | |||
| 40<d≤100 | - | 350 | 600÷750 | 19 | 45 | 20 | 290 | 550 | 17 | |||
| 100<d≤160 | - | - | - | - | - | - | 260 | 530 | 17 | |||
| 160<d≤250 | - | - | - | - | - | - | 260 | 530 | 17 | |||
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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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sertlik (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 | - | - | - | - | - | - | 560 | 800÷1000 | 8 | 540 | 700÷1000 | 6 | |
| 10<d≤16 | - | - | - | - | - | - | 525 | 750÷950 | 8 | 460 | 650÷980 | 7 | |
| 16<d≤40 | 164÷207 | 550÷710 | 400 | 630÷780 | 18 | 30 | 490 | 680÷880 | 9 | 365 | 620÷920 | 8 | |
| 40<d≤63 | 164÷207 | 550÷710 | 350 | 600÷750 | 19 | 30 | 435 | 620÷820 | 10 | 330 | 590÷840 | 9 | |
| 63<d≤100 | 164÷207 | 550÷710 | 350 | 600÷750 | 19 | 30 | 420 | 600÷800 | 11 | 290 | 550÷820 | 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 | 860÷900 |
| Soft annealing | 650÷700 |
| Quenching in oil or water | 840÷880 |
| 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 | 60 | 60 | 59 | 57 | 53 | 47 | 39 | 34 | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |||||
| Min | 51 | 46 | 35 | 27 | 25 | 24 | 23 | 22 | 21 | 20 | - | - | - | - | - | - | ||||||
