Acier AISI 4140 / 1.7227 / 42CrMoS4
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Spécification, Chemical & Performance mécanique
AISI 4140 Steel Bar, Steel Plate, Flats Supplier, Stockist and Exporter. AISI SAE 4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components, like axles, shafts, bolts, gears and other applications. Similar to alloy grade AISI 4130 chrome moly alloy steel but with a slightly higher carbon content. The higher carbon content of AISI 4140 steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steels, however it does have inferior weldability characteristics.
Nous pouvons produire 1.7227, DIN 42CrMoS4, AISI 4140 stainless steel round rods, 1.7227, DIN 42CrMoS4, AISI 4140 forging,sheet,coil,and profiledstrip,Deformed steel,flat steel,mould,steel wire,have all specifications. With Bozhong Group production experience, strict control 1.7227, DIN 42CrMoS4, AISI 4140 chemical composition and 1.7227, DIN 42CrMoS4, AISI 4140 mechanical properties.From casting, forging, steel to hot and cold rolling process, heat treatment, etc, we have the control of professional engineers. We have advanced precision machining equipment, according to the requirements of users machining. in order to achieve the most satisfied with the user requirements.
Supply Range for AISI alloy 4140 steel
Barre ronde en acier 4140: diamètre 8mm - 3000mm
4140 Steel Plate: thickness 10mm – 1500mm x width 200mm – 3000mm
4140 Steel Grade Square: 20mm – 500mm
Finition de surface: noir, usiné grossièrement, tourné ou selon les exigences données.
Largeur: 10mm à 2500mm
Lenth: Nous pouvons fournir n'importe quelle lenth en fonction des besoins du client.
Désignation par normes
| Marque | Ravne No. | Tapis. Non. | DIN | EN | AISI |
| 42CRMOS4 | 792 | 1.7227 | 42CrMoS4 | 42CrMoS4 | 4140 |
Composition chimique (en% en poids)
| C | Si | Mn | Cr | Mo | Ni | V | W | Autres |
| 0.41 | max. 0.40 | 0.75 | 1.05 | 0.28 | - | - | - | - |
Description
Special structural steel.
Applications
High and moderately stressed components for automobile industry and mechanical engineering – shafts, connecting rods, crankshafts, screws, etc.
Propriétés physiques (valeurs moyennes) à température ambiante
Module d'élasticité [103 x N / mm2]: 210
Densité [g / cm3]: 7.80
Recuit doux
Chauffer à 680-720oC, refroidir lentement dans le four. Cela produira une dureté Brinell maximale de 241.
Normaliser
Température: 840-880oC.
durcissement
Durcir à une température de 820-860oC followed by oil or water quenching.
Tempérer
Température de revenu: 540-680oC.
Propriétés mécaniques à l'état trempé et revenu
| Diamètre (mm) | 0.2 proof stress (N/mm2) | Tensile stregth (N/mm2) | Allongement (%) | Reduction (%) | Impact energy (J) |
| Jusqu'à 16 | 900 | 1100-1300 | 10 | 40 | 30 |
| 17-40 | 750 | 1000-1200 | 11 | 45 | 35 |
| 41-100 | 650 | 900-1100 | 12 | 50 | 35 |
| 101-160 | 550 | 800-950 | 13 | 50 | 35 |
| 161-250 | 500 | 750-900 | 14 | 55 | 35 |
Hardenability in the end-quench test
Quenching temperature in the end-quench test is 850oC
| Dureté | 1.5 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 |
| H max. | 61 | 61 | 61 | 60 | 60 | 59 | 59 | 58 | 56 | 53 | 51 | 48 | 47 | 46 | 45 |
| H min. | 53 | 53 | 52 | 51 | 49 | 43 | 40 | 37 | 34 | 32 | 31 | 30 | 30 | 29 | 29 |
| HH max. | 61 | 61 | 61 | 60 | 60 | 59 | 59 | 58 | 56 | 53 | 51 | 48 | 47 | 46 | 45 |
| HH min. | 56 | 56 | 55 | 54 | 52 | 48 | 46 | 44 | 41 | 39 | 38 | 36 | 36 | 35 | 34 |
| HL max. | 58 | 58 | 58 | 57 | 56 | 54 | 53 | 51 | 49 | 46 | 44 | 42 | 41 | 40 | 40 |
| HL min. | 53 | 53 | 52 | 51 | 49 | 43 | 40 | 37 | 34 | 32 | 31 | 30 | 30 | 29 | 29 |
Forger
Température de formage à chaud: 1050-850oC.
