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  • AISI 4140 Steel /1.7227 /42CrMoS4
  • AISI 4140 Steel /1.7227 /42CrMoS4

AISI 4140 Steel /1.7227 /42CrMoS4

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Specification, Chemical & Mechanical Performance

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.

 

We can produce 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

4140 Steel Round Bar: diameter 8mm – 3000mm
4140 Steel Plate: thickness 10mm – 1500mm x width 200mm – 3000mm
4140 Steel Grade Square: 20mm – 500mm
Surface Finish: Black, Rough Machined, Turned or as per given requirements.

Width: 10mm to 2500mm

Lenth: We can supply any lenth based on the customer's requirement.

 

Designation by Standards

Brand Name Ravne No. Mat. No. DIN EN AISI
42CRMOS4 792 1.7227 42CrMoS4 42CrMoS4 4140

 

Chemical Composition (in weight %)

C Si Mn Cr Mo Ni V W Others
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.

Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210 
Density [g/cm3]: 7.80

Soft Annealing
Heat to 680-720oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 241.

Normalizing
Temperature: 840-880oC.

Hardening
Harden from a temperature of 820-860oC followed by oil or water quenching.

Tempering
Tempering temperature: 540-680oC.

 

Mechanical Properties in Quenched and Tempered Condition

Diameter (mm) 0.2 proof stress (N/mm2) Tensile stregth (N/mm2) Elongation (%) Reduction (%) Impact energy (J)
Up to 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

Hardness 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

 

Forging
Hot forming temperature: 1050-850oC. 

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