PROPERTIES AND EMPLOYEMENTS
IT IS A QUENCHED AND TEMPERED STEEL (IDENTICAL TO 30CrNiMo8 REF. UNI 7845 / UNI 7847) WITH HIGH HARDENABILITY AND TOUGHNESS.
IT HAS A GOOD COLD AND WARM MACHINABILITY. IT CAN BE QUENCHED AND TEMPERED WITH HIGH VALUES OF RESISTANCE AND TOUGHNESS ON BIG SECTIONS WHERE IT IS REQUIRED A REMARKABLE HARDNESS UNIFORMITY.
IT CAN BE NITRITED TO IMPROVE ITS RESISTANCE AND FATIGUE STRENGTH.
IT IS COMMONLY USED FOR THE REALIZATION OF PINIONS AND TURBINE SHAFTS.
CORRESPONDENCE TO INTERNATIONAL DESIGNATIONS
| QUALITY | EUROPE | GERMANY | FRANCE | SPAIN | G.B. | USA | |
|---|---|---|---|---|---|---|---|
| EN | DIN | W.n. | AFNOR | UNE | B.S. | AISI/SAE | |
| 30CrNiMo8 | 30CrNiMo8 | 30CrNiMo8 | 1.6580 | 822M30 | |||
CHEMICAL COMPOSITION % (EN 10083-3)
| STEEL DESIGNATION | CHEMICAL COMPOSITION | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| SYMBOLIC | NUMERIC | C | Si max | Mn | P max | S max | Cr | Mo | Ni | V |
| 30CrNiMo8 | 1.6580 | 0,26 ÷ 0,34 | 0,40 | 0,50 ÷ 0,80 | 0,025 | 0,035 | 1,80 ÷ 2,20 | 0,30 ÷ 0,50 | 1,80 ÷ 2,20 | - |
CONCENTRATION LIMITS OF THE ELEMENTS THAT ARE NOT INDICATED IN THE TABLE CAN BE DEDUCED IN THE EN 10020 REGULATION.
MECHANICAL CHARACTERISTICS (EN 10083-3)
| STEEL | MECHANICAL CHARACTERISTICS FOR THE REDUCED SECTION (EN 10083-1:2006, ATTACHMENT A) WITH A DIAMETER (D) OF | |||||||||||||||||||||||||
| d ≤ 16mm | 16mm < d ≤ 40mm | 40mm < d ≤ 100mm | 100mm < d ≤ 160mm | 160mm < d ≤ 250mm | ||||||||||||||||||||||
| SYMBOLIC | NUMERIC | Re min | Rm | A min | Z min | KVb min | Re min | Rm | A min | Z min | KVb min | Re min | Rm | A min | Z min | KVb min | Re min | Rm | A min | Z min | KVb min | Re min | Rm | A min | Z min | KVb min |
| N/mm2 | % | % | J | N/mm2 | % | % | J | N/mm2 | % | % | J | N/mm2 | % | % | J | N/mm2 | % | % | J | |||||||
| 30CrNiMo8 | 1.6580 | 1050 | 1250 to 1450 |
9 | 40 | - | 1050 | 1250 to 1450 |
9 | 40 | 30 | 900 | 1000 to 1300 |
10 | 45 | 35 | 800 | 1000 to 1200 |
11 | 50 | 45 | 700 | 900 to 1100 |
12 | 50 | 45 |
JOMINY HARDENABILITY (EN 10083-3)
| STEEL DESIGNATION | SYMBOL | RANGE LIMITS | HRC HARDNESS MEASURED FROM THE QUENCHED END OF THE TEST TUBE (MM) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SYMBOLIC | NUMERIC | 1,5 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | ||
| 30CrNiMo8 | 1.6580 | +H | max | 56 | 56 | 56 | 56 | 55 | 55 | 55 | 55 | 55 | 54 | 54 | 54 | 54 | 54 | 54 |
| min | 48 | 48 | 48 | 48 | 47 | 47 | 47 | 46 | 46 | 45 | 45 | 44 | 44 | 43 | 43 | |||
USUALLY AVAILABLE EX STOCK
| M.T. COLORATION | QUALITY | HEAT TREATMENT | SURFACE | DIAMETER (mm) |
|---|---|---|---|---|
 |
30CrNiMo8 | Quenched and tempered Quenched and tempered stress relieved |
rolled reeled | 40-280 |
 |
Download technical sheet |