Uncompromising quality
Uncompromising quality
Uncompromising quality
Uncompromising quality
Uncompromising quality
Uncompromising quality
20MnCr5 (UNI EN 10084)
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÷1520 (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 |
rolled forged turned drawn / peeled h11 |
20-300 310-490 16-80 |
 |
20MnCr5 high machinability |
Annealed |
rolled peeled |
30-200 28-80 |
 |
Download technical sheet |
Steels
Our steel always comes from the same European steelworks, which guarantee a continuity for what concerns quality. The constant quality of the supplies allows to have repetitive parameters in mechanical processing and a greater control over deformations during heat treatment.
Machining
Precise cuttings of small and big series are guaranteed by the employement of latest generation automatic saws that were projected and realized in order to guarantee precision standards required by customers, reducing processing wastage.
Quality
The certification and introduction of the Quality System management allowed M.T.Acciai to improve not only its efficiency, but also the quality that is offered, in order to better meet our customers’ needs.