16MnCrS5/16MnCr5 (1.7139/1.7131)
EN 10084 / ISO 683-3 / UNI 7846
Annealed (+A)
PROPERTIES AND EMPLOYEMENTS
16MnCrS5 is a case-hardening alloy steel particularly suitable for the production of mechanical components designed to withstand high stresses. Thanks to its combination of resistance and toughness, it is used in the production of camshafts, gears, bolts and other structural elements subject to wear and high loads.
Generally supplied in the annealed state, it guarantees well-defined hardness ranges, facilitating homogeneous and constant machinability. The case-hardening heat treatment allows to increase the surface hardness and thus improve the wear resistance of the surface, maintaining a tough core, capable of absorbing stresses without the risk of brittleness. For applications that require optimized machining, the 16MnCrS5 variant is available, enriched with Sulphur to improve machinability. In some cases, both versions can be supplied with double 16MnCr(S)5 certification. Thanks to its characteristics, 16MnCrS5 represents a strategic choice in the automotive sector and in precision mechanics, where high mechanical performance combined with good machinability are required.
Generally supplied in the annealed state, it guarantees well-defined hardness ranges, facilitating homogeneous and constant machinability. The case-hardening heat treatment allows to increase the surface hardness and thus improve the wear resistance of the surface, maintaining a tough core, capable of absorbing stresses without the risk of brittleness. For applications that require optimized machining, the 16MnCrS5 variant is available, enriched with Sulphur to improve machinability. In some cases, both versions can be supplied with double 16MnCr(S)5 certification. Thanks to its characteristics, 16MnCrS5 represents a strategic choice in the automotive sector and in precision mechanics, where high mechanical performance combined with good machinability are required.
CORRESPONDENCE TO INTERNATIONAL DESIGNATIONS
| QUALITY | EUROPE | GERMANY | FRANCE | SPAIN | G.B. | USA | |
|---|---|---|---|---|---|---|---|
| EN | DIN | W.n. | AFNOR | UNE | B.S. | AISI/SAE | |
| 16MnCr5 | 16MnCr5 | 16MnCr5 | 1.7131 | 16MC5 | 5155 | ||
CHEMICAL COMPOSITION % (EN 10084)
| STEEL DESIGNATION | CHEMICAL COMPOSITION | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| SYMBOLIC | NUMERIC | C | Si max | Mn | P max | S | Cr | Mo | Ni | B |
| 16MnCr5 | 1.7131 | 0,14 ÷ 0,19 | 0,40 | 1,00 ÷ 1,30 | 0,025 | ≤ 0,035 | 0,80 ÷ 1,10 | - | - | - |
| 16MnCrS5 | 1.7139 | 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 grade | BAR'S DIAMETER | TENSILE TESTING | impact test KCU min | ||||
|---|---|---|---|---|---|---|---|
| Ultimate tensile strength (UTS) R | Yield tensile strength (YTS) Rp 0,2 min | elongation A min | |||||
| mm | N/mm2 | kgf/mm2 | N/mm2 | kgf/mm2 | % | J | |
| 16MnCr5 | 11 (30) (63) |
1030÷1370 (740÷1030) (640÷930) |
105÷140 (75÷105) (65÷95) |
735 (490) (440) |
75 (50) (45) |
8 (9) (10) |
25 (25) (25) |
JOMINY HARDENABILITY (EN 10084)
| steel grade | RANGE LIMITS | HRC HARDNESS MEASURED FROM THE QUENCHED END OF THE TEST TUBE (MM) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DESIGNATION | Werl.no. | 1,5 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 20 | 25 | 30 | 35 | 40 | |
|
16MnCr5+H 16MnCrS5+H |
1.7131+H 1.7139+H |
max | 47 | 46 | 44 | 41 | 39 | 37 | 35 | 33 | 31 | 30 | 29 | 28 | 27 |
| min | 39 | 36 | 31 | 28 | 24 | 21 | - | - | - | - | - | - | - | ||
|
16MnCr5+HH 16MnCrS5+HH |
1.7131+HH 1.7139+HH |
max | 47 | 46 | 44 | 41 | 39 | 37 | 35 | 33 | 31 | 30 | 29 | 28 | 27 |
| min | 42 | 39 | 35 | 32 | 29 | 26 | 24 | 22 | 20 | - | - | - | - | ||
|
16MnCr5+HL 16MnCrS5+HL |
1.7131+HL 1.7139+HL |
max | 44 | 43 | 40 | 37 | 34 | 32 | 30 | 28 | 26 | 25 | 24 | 23 | 22 |
| min | 39 | 36 | 31 | 28 | 24 | 21 | - | - | - | - | - | - | - | ||
USUALLY AVAILABLE EX STOCK
| M.T. COLORATION | QUALITY | HEAT TREATMENT | SURFACE | DIAMETER (mm) |
|---|---|---|---|---|
 |
16MnCr5 | Soft-annealed | rolled drawn / peeled h11 |
20-270 18-80 |
 |
16MnCr5 high machinability |
Soft-annealed | rolled peeled |
24-65 22-62 |
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