Uncompromising quality
Uncompromising quality
Uncompromising quality
Uncompromising quality
Uncompromising quality
Uncompromising quality
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34CrAlNi7 (UNI 8077)
PROPERTIES AND EMPLOYEMENTS
THIS STEEL HAS AN ELEVATED HARDENABILITY, DISCREET TOUGHNESS AND IT IS SUITABLE FOR THE CONSTRUCTION OF BIG PARTS THAT ARE SUBMITTED TO ELEVATED DYNAMIC STRESSES. IT HAS THE BEST MACHINABILITY AMONG NITRIDING STEELS THAT CONTAIN ALUMINIUM. FOR THIS REASON IT IS PREFERRED OVER OTHER NITRIDING STEELS, BECAUSE AN ESSENTIAL CHARACTERISTIC IS THE TOUGHNESS OF NITRITED LAYERS AT ELEVATED HARDNESS (GUARANTEED BY ALUMINIUM).
CORRESPONDENCE TO INTERNATIONAL DESIGNATIONS
| QUALITY | EUROPE | GERMANY | FRANCE | SPAIN | G.B. | USA | |
|---|---|---|---|---|---|---|---|
| EN | DIN | W.n. | AFNOR | UNE | B.S. | AISI/SAE | |
| 34CrAlNi7 | 34CrAlNi7-10 | 34CrAlNi7 | 1,8550 | K52440 | |||
CHEMICAL COMPOSITION % (UNI 8077)
| STEEL DESIGNATION | CHEMICAL COMPOSITION | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| SYMBOLIC | NUMERIC | C |
Si max |
Mn |
P max |
Sb max |
Al | Cr | Mo | Ni | V |
| 34CrAlNi7-10 | 1,8550 | 0,30 ÷ 0,37 | 0,40 | 0,40 ÷ 0,70 | 0,025 | 0,035 | 0,80 ÷ 1,20 | 1,50 ÷ 1,80 | 0,15 ÷ 0,25 | 0,85 ÷ 1,15 | - |
CONCENTRATION LIMITS OF THE ELEMENTS THAT ARE NOT INDICATED IN THE TABLE CAN BE DEDUCED IN THE EN 10020 REGULATION.
MECHANICAL CHARACTERISTICS (UNI 8077)
| STEEL | 16mm < d ≤ 40mm | 40mm < d ≤ 100mm | 100mm < d ≤ 160mm | 160mm < d ≤ 250mm | HV1b | |||||||||||||
| SYMBOLIC | NUMERIC | Re min | Rm | A min | KV min | Re min | Rm | A min | KV min | Re min | Rm | A min | KV min | Re min | Rm | A min | KV min | |
| N/mm2 | % | J | N/mm2 | % | J | N/mm2 | % | J | N/mm2 | % | J | |||||||
| 34CrAlNi7-10 | 1,8550 | 680 |
900 to 1100 |
10 | 30 | 650 |
850 to 1050 |
12 | 30 | 600 |
800 to 1000 |
13 | 35 | 600 |
800 to 1000 |
13 | 35 | 950 |
JOMINY HARDENABILITY (UNI 8077)
| 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 | |
| 34CrAlNi7-10 | 1,8550 | max | 60 | 59 | 58 | 57 | 56,5 | 56 | 55,5 | 55 | 53,5 | 52,5 | 51 | 49 | 47,5 |
| min | 49 | 48 | 47 | 46,5 | 45,5 | 44 | 43,5 | 42 | 39 | 37 | 35 | 34 | 33 | ||
USUALLY AVAILABLE EX STOCK
| M.T. COLORATION | QUALITY | HEAT TREATMENT | SURFACE | DIAMETER (mm) |
|---|---|---|---|---|
 |
34CrAlNi7 | Quenched and tempered, stress relieved | rolled peeled | 130-250 |
 |
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.