Products
34CrNiMo6 Steel - Nr.1.6582
High-Nickel Chromium Steel with High Hardenability
This is the steel most commonly used in northern Europe when the addition of nickel is required by the severe use conditions. It has an elevated temperability thanks to the presence of significant levels of nickel and chromium: it is even suitable for the construction of large pieces that, at the quenched and tempered state, have well transformed structures down to the core.
References and Comparable Standards
Standard Reference: EN ISO 683-2: 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° | ||||
| 34CrNiMo6 | 1.6582 | - | 34CrNiMo6 | 1.6582 | - | - | 4340 |
Chemical Composition (Cast Analysis) (%)
| C | Si | Mn | P/max | S/max | Cr | Mo | Ni | Cu/max | Al |
|---|---|---|---|---|---|---|---|---|---|
| 0,30÷0,38 | 0,10÷0,40 | 0,50÷0,80 | 0,025 | 0,035 | 1,30÷1,70 | 0,15÷0,30 | 1,30÷1,70 | 0,40 | 0,020÷0,050 |
Mechanical Properties - As Rolled Condition
| Size (mm) |
Treated to improve shearability (+S) |
Soft annealing (+A) |
Quenched and tempered (+QT) |
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|---|---|---|---|---|---|---|---|
| HB max to condition | Rp0,2 (MPa) min |
Rm (MPa) min |
A5 (%) min |
Z (%) min |
KV (J) min |
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| d≤16 | where the shearability is of importance, this steel should be ordered in the “soft annealed” condition |
248 | 1000 | 1200÷1400 | 9 | 40 | - |
| 16<d≤40 | 248 | 900 | 1100÷1300 | 10 | 45 | 45 | |
| 40<d≤100 | 248 | 800 | 1000÷1200 | 11 | 50 | 45 | |
| 100<d≤160 | 248 | 700 | 900÷1100 | 12 | 55 | 45 | |
| 160<d≤250 | 248 | 600 | 800÷950 | 13 | 55 | 45 | |
Mechanical Properties – Bright Steel
| Size (mm) |
as Rolled+Turned (+A+SH) |
Quenched+Tempered+Turned (+QT+SH)* |
Islah edilmiş + Soğuk Çekilmiş (+QT +C) |
as Rolled+Cold Drawn (+A+C) |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hardness HB max |
Rp0,2 (MPa) min |
Rm (MPa) min |
A5 (%) min |
KV (J) min |
Rp0,2 (MPa) min |
Rm (MPa) | A5 (%) min |
Hardness HB max |
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| 5≤d≤10 | - | - | - | - | - | 770 | 1000÷1200 | 8 | 308 | |||
| 10<d≤16 | - | - | - | - | - | 750 | 1000÷1200 | 8 | 298 | |||
| 16<d≤40 | 248 | 900 | 1100÷1300 | 10 | 40 | 720 | 1000÷1200 | 9 | 293 | |||
| 40<d≤63 | 248 | 800 | 1000÷1200 | 11 | 45 | 650 | 1000÷1200 | 10 | 288 | |||
| 63<d≤100 | 248 | 800 | 1000÷1200 | 11 | 45 | 650 | 1000÷1200 | 10 | 288 | |||
| *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 |
| Isothermal annealing | 820÷860-->650 |
| Soft annealing | 640÷680 |
| Quenching in oil | 830÷860 |
| Tempering | 550÷650 |
Hardness Limits (Jominy Test)
| Limits of range | Hardness HRC at a distance from quenched end of test pieces (mm) | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1,5 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | |||||||
| +H | Max | 58 | 58 | 58 | 58 | 57 | 57 | 57 | 57 | 57 | 57 | 57 | 57 | 57 | 57 | 57 | |||||
| Min | 50 | 50 | 50 | 50 | 49 | 48 | 48 | 48 | 48 | 47 | 47 | 47 | 46 | 45 | 44 | ||||||
| +HH | Max | 58 | 58 | 58 | 58 | 57 | 57 | 57 | 57 | 57 | 57 | 57 | 57 | 57 | 57 | 57 | |||||
| Min | 53 | 53 | 53 | 53 | 52 | 51 | 51 | 51 | 51 | 50 | 50 | 50 | 50 | 49 | 48 | ||||||
| +HL | Max | 55 | 55 | 55 | 55 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 53 | 53 | 53 | |||||
| Min | 50 | 50 | 50 | 50 | 49 | 48 | 48 | 48 | 48 | 47 | 47 | 47 | 46 | 45 | 44 | ||||||
