4140 Alloy Steel Bar
Specification
l Supply Range for AISI alloy 4140 steel
l 4140 Steel Round Bar: diameter 8mm – 3000mm
l 4140 Steel Plate: thickness 10mm – 1500mm x width 200mm – 3000mm
l 4140 Steel Grade Square: 20mm – 500mm
l Surface Finish: Black, Rough Machined, Turned or as per given requirements.
l Width: 10mm to 2500mm
l Length: We can supply any length based on the customer’s requirement.
Chemical Composition (in weight %)
| C | Si | Mn | Cr | Mo | Ni | V | W | Others |
| 0.41 | max. 0.40 | 0.75 | 1.05 | 0.28 | - | - | - | - |
Applications
High and moderately stressed components for automobile industry and mechanical engineering – shafts, connecting rods, crankshafts, screws, etc.
Psical properties (average 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.
42CrMo4 Steel Bar Stock Sizes
| Alloy Steel Round Bar | 4 – 500mm OD |
| 42CrMo4 Steel Bright Bar | 4 – 100mm OD |
| SAE 4140 Hex Bar | 18 – 57mm (11/16″ to 2-3/4″) |
| AISI 4130 Square Bar | 18 – 47mm (11/16″ to 1-3/4″) |
| ASTM A182 Alloy Steel Flat Bar | 1/2 – 10 inches |
| EN 19 Steel Billet | 1/2 – 495mm |
| Alloy Steel Rectangular Bar | 33 x 30mm to 295 x 1066mm |
| 42CrMo4 Steel Angle bar size range in mm | 3x 20x 20 – 12x 100x 100 |
Exporter and supplier of SAE 4140/ 4142/ 4340/ 4320 Round Bar and EN 19 Square bars
