PROPERTIES AND EMPLOYEMENTS
IT IS SIMILAR TO 16MnCr5, BUT IT IS MORE HARDENING AND IT CAN ALSO HAVE GOOD CHARACTERISTICS FOR WHAT CONCERNS THE CENTRE, UP TO A DIAMETER OF MORE OR LESS MM 50.
CORRESPONDENCE TO INTERNATIONAL DESIGNATIONS
| QUALITY | EUROPE | GERMANY | FRANCE | SPAIN | G.B. | USA | |
|---|---|---|---|---|---|---|---|
| EN | DIN | W.n. | AFNOR | UNE | B.S. | AISI/SAE | |
| 20MnCrS5 | 20MnCrS5 | 20MnCrS5 | 1.7147 | 20MC5 | |||
CHEMICAL COMPOSITION % (EN 10084)
| STEEL DESIGNATION | CHEMICAL COMPOSITION | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| SYMBOLIC | NUMERIC | C | Si max | Mn | P max | S | Cr | Mo | Ni | B |
| 20MnCr5 | 1.7147 | 0,17 ÷ 0,22 | 0,40 | 1,10 ÷ 1,40 | 0,025 | ≤ 0,035 | 1,00 ÷ 1,30 | - | - | - |
| 20MnCrS5 | 1.7149 | 0,020 ÷ 0,040 | ||||||||
CONCENTRATION LIMITS OF THE ELEMENTS THAT ARE NOT INDICATED IN THE TABLE CAN BE DEDUCED IN THE EN 10020 REGULATION.
MECHANICAL CHARACTERISTICS (UNI 7846)
| STEEL QUALITY | BAR'S DIAMETER | TENSILE TESTING | IMPACT STRENGTH KCU min | ||||
|---|---|---|---|---|---|---|---|
| UNIFIED TENSILE STRENGTH R | DEVIATION FROM PROPORTIONALITY Rp 0,2 min | ELONGATION A min | |||||
| mm | N/mm2 | kgf/mm2 | N/mm2 | kgf/mm2 | % | J | |
| 20MnCr5 | 11 (30) (63) |
1230÷1570 (930÷1230) (780÷1080) |
125÷160 (95÷125) (80÷110) |
930 (690) (540) |
95 (70) (55) |
7 (8) (9) |
17,5 (20) (25) |
JOMINY HARDENABILITY (EN 10084)
| STEEL DESIGNATION | 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 | |
| 20MnCr5+H | 1.7147+H | max | 49 | 49 | 48 | 46 | 43 | 42 | 41 | 39 | 37 | 35 | 34 | 33 | 32 |
| 20MnCrS5+H | 1.7149+H | min | 41 | 39 | 36 | 33 | 30 | 28 | 26 | 25 | 23 | 21 | - | - | - |
| 20MnCr5+HH | 1.7147+HH | max | 49 | 49 | 48 | 46 | 43 | 42 | 41 | 39 | 37 | 35 | 34 | 33 | 32 |
| 20MnCrS5+HH | 1.7149+HH | min | 44 | 42 | 40 | 37 | 34 | 33 | 31 | 30 | 28 | 26 | 25 | 24 | 23 |
| 20MnCr5+HL | 1.7147+HL | max | 46 | 46 | 44 | 42 | 39 | 37 | 36 | 34 | 32 | 30 | 29 | 28 | 27 |
| 20MnCrS5+HL | 1.7149+HL | min | 41 | 39 | 36 | 33 | 30 | 28 | 26 | 25 | 23 | 21 | - | - | - |
USUALLY AVAILABLE EX STOCK
| M.T. COLORATION | QUALITY | HEAT TREATMENT | SURFACE | DIAMETER (mm) |
|---|---|---|---|---|
 |
20MnCr5 | Soft-annealed (+A) | rolled forged turned drawn / peeled h11 |
20-300 310-490 16-80 |
 |
20MnCr5 high machinability |
Annealed (+A) | rolled peeled |
30-200 28-80 |
 |
Download technical sheet |