16NiCrMo12/~14NiCrMo13-3 (1.6657/1.6660)
UNI 7846
Recuit (+A)
PROPRIÉTÉS ET UTILISATIONS
IT IS A CASE-HARDENING STEEL WITH PARTICULARLY ELEVATED MECHANICAL CHARACTERISTICS. THE REMARKABLE QUANTITY OF ALLOY ELEMENTS (ESPECIALLY Ni) CONFERS THE NUCLEUS AN ELEVATED HARDENABILITY AND RESISTANCE, COMBINED WITH AN EXCELLENT TOUGHNESS AND FATIGUE STRENGTH.
IT IS SUCCESSFULLY EMPLOYMENT IN SUBSTITUTION OF 16NiCr11 AND OF ALL THOSE CASE-HARDENING STEELS THAT HAVE A HIGH CONTENT OF NICKEL AND CHROMIUM THAT ARE NOT UNIFIED. IT IS ALSO USED FOR THE CONSTRUCTION OF PARTS THAT ARE SUBJECT OF REPEATED IMPACTS AND/OR STRONGLY STRESSED.
IT IS SUCCESSFULLY EMPLOYMENT IN SUBSTITUTION OF 16NiCr11 AND OF ALL THOSE CASE-HARDENING STEELS THAT HAVE A HIGH CONTENT OF NICKEL AND CHROMIUM THAT ARE NOT UNIFIED. IT IS ALSO USED FOR THE CONSTRUCTION OF PARTS THAT ARE SUBJECT OF REPEATED IMPACTS AND/OR STRONGLY STRESSED.
WITH NORM EN 10084, 16NiCrMo12 WAS SUBSTITUTED WITH 14NiCrMo13-4, WHICH HAS SIMILAR CHARACTERISTICS.
CORRESPONDANCE DÉSIGNATION INTERNATIONALE
| ACIER | EUROPA | ALLEMAGNE | FRANCE | ESPAGNE | G.B. | USA | |
|---|---|---|---|---|---|---|---|
| EN | DIN | W.n. | AFNOR | UNE | B.S. | AISI/SAE | |
| 16NiCrMo12 |
~14NiCrMo13-3 ~20NiCrMo13-4 |
~1.6657 ~1.6660 |
~16NCD13 | 9314 | |||
COMPOSITION CHIMIQUE % (EN 10084)
| DÉSIGNATION DE L'ACIER | COMPOSITION CHIMIQUE % | |||||||
|---|---|---|---|---|---|---|---|---|
| C | Mn | Si | P max | S max | Cr | Ni | Mo | |
| 16NiCrMo12 | 0,13 ÷ 0,19 | 0,40 ÷ 0,70 | 0,15 ÷ 0,40 | 0,035 | 0,035 | 0,80 ÷ 1,10 | 2,70 ÷ 3,20 | 0,30 ÷ 0,40 |
LES LIMITES DE CONCENTRATION DES ÉLÉMENTS NON INDIQUÉS DANS LE TABLEAU PEUVENT ÊTRE DÉRIVÉES DE LA NORME EN 10020.
CARACTÉRISTIQUES MÉCANIQUES (UNI 7846)
| ACIER | Diamètre de l'éprouvette | Propriétés mécaniques | Essai d'impact KCU min | ||||
|---|---|---|---|---|---|---|---|
| Résistance à la rupture Rm | Limite d'élasticité et résistance à la traction Re 0,2 min | Alongement A min | |||||
| mm | N/mm2 | kgf/mm2 | N/mm2 | kgf/mm2 | % | J | |
| 16NiCrMo12 | 11 (30) (63) |
1230÷1520 (1080÷1370) (980÷1270) |
125÷155 (110÷140) (100÷130) |
980 (785) (735) |
100 (80) (75) |
9 (10) (10) |
32,5 (35) (42,5) |
Trempabilité JOMINY (EN 10084)
| Aciers | limites | Dureté HRC mesurée à une distance de l’extrémité trempée de l’éprouvette | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| distance (mm) | ||||||||||||||||
| désignation | 1,5 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | |
| 16NiCrMo12 | max | 48 | 48 | 48 | 47,5 | 47,5 | 47 | 47 | 46,5 | 45,5 | 44,5 | 44 | 43 | 42 | 41,5 | 41 |
| min | 42 | 41,5 | 41 | 40,5 | 40 | 39 | 38,5 | 38 | 36,5 | 35,5 | 34 | 33 | 32 | 31 | 30 | |
NORMALEMENT DISPONIBLE EN STOCK
| Coloration M.T. | Aciers | Traitement thermique | État de surface | Diamètre Ø (mm) |
|---|---|---|---|---|
 |
16NiCrMo12 | Annealed | rolled | 20-200 |
 |
Download technical sheet |