Product Description
Alloy round steels are characterised by a variety of features, notably high strength, high toughness, resistance to wear, corrosion, high and low temperatures. These features make alloy round steel excel in various industrial applications and are widely used in machinery, automotive and many other fields.
4140 alloy structural steel is a U.S. standard grade of medium-high strength alloy steel. The material has high strength, high hardenability, good toughness and quenching deformation, etc., suitable for the manufacture of locomotive traction gears, supercharger transmission gears and other high-strength forgings.
(1). Properties of 4140 alloy steel:
Special alloy steel, engineering steel supplied in quenched and tempered conditions. Very good machinability. High toughness, creep strength, repeated impact resistance.
(2). Application of 4140 alloy steel:
In the automotive industry, it is used to manufacture parts and components, such as engine crankshafts and transmission systems.In the aerospace field, it is applied in the manufacture of aircraft seats and structural components.
In addition, it also plays a significant role in industries such as oil and gas extraction, construction, and heavy machinery manufacturing.
Product Parameters
(1). 4140 Steel Equivalent Grades :
| GB | DIN | ASTM | JIS | BS | NF |
| 42CrMo | 1.7225 | 4140 | SCM440 | 708M40 | 42CD4 |
(2). 4140 Steel Composition:
| Grade | C | Si | Mn | Cr | Mo | P | S |
| 4140 | 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | 0.80-1.10 | 0.15-0.25 | <0.035 | <0.04 |
| 42CrMo | 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | 0.90-1.20 | 0.15-0.25 | <0.035 | <0.035 |
| 1.7225 | 0.38-0.45 | 0.10-0.35 | 0.60-0.90 | 0.90-1.20 | 0.15-0.30 | <0.025 | <0.025 |
| SCM440 | 0.38-0.43 | 0.15-0.35 | 0.60-0.90 | 0.90-1.20 | 0.15-0.30 | <0.030 | <0.030 |
| 708M40 | 0.36-0.44 | 0.10-0.40 | 0.50-0.90 | 0.90-1.20 | 0.15-0.30 | <0.035 | <0.035 |
| 42CD4 | 0.38-0.46 | 0.10-0.40 | 0.60-0.90 | 0.85-1.20 | 0.15-0.30 | <0.035 | <0.035 |
(3).Special Steel Round Bar
| Grade | Spec | Dimension | Steel Grade | Application industry | |
| Special Steel Round Bar | Quality carbon structural steel | GB/T699 JIS G 4051 ASTM A29 SAE,EN10083 (Others) | 12-260 | 10# ,20#,45#, 65Mn,SAE1080,S45C,etc | For Manufacturing of All Kinds of Bearing Parts, Connecting Rod. Rigging Metal Tools etc. |
| Low alloy high-strength steel | GB/T1591,(Others) | 13-260 | Q355 series,Q460C,etc | Mechanical,Car,Engineering machinery | |
| Alloy structural steel | GB/T3077,JIS,ASTM A29, EN10083,(Others) | 13-260 | 20Mn2-45Mn2,25MnV,27SiMn-42SiMn,20Cr-40Cr,12CrMo-42CrMo,20CrMn,40CrMn,SCr420,SCr440,SCM420,SCM440,41Cr4,20CrMoA,30CrMoA,20Cr2MoA,20CrNiMo,20Cr2Ni4A,SAE4340,20Cr2Ni4A,30CrMnSiA etc | Mechanical,Car,Bridge,Petrochemical industry | |
| Bearing steel | GB/T18254,(Others) | 14-200/5-25 wire rod and cold drawn wire | GCr15,GCr15SiMn,C&U1,C&U2,GCr15-JN,SCP52100,SCPSS52100,GCr15S700,100CrMn6,SUJ2,SUJ2S1,SAE1055,S55C,G20CrNiMoA(SAE8620),GCr15etc | Mechanical ,Car ,Electric machinery,Engineering machinery etc | |
| Spring Steel | GB/T1222,JIS,SAE,EN,(Others) | 13-120 | 60Si2MnA,60Si2CrA,60Si2CrVA,55CrMnA,50CrVA,SUP9, SUP9A ,SUP11A, 55Cr3 ,51CrV4 ,52CrMoV4 ,SAE5160 SAE6150 ,SAE9254, 60SiCrVAT, 52CrMoV4 ,55SiCr etc | Car,High Speed railway,Locomotive | |
| Round billet | 300mm-600mm ( According to the different requirement) | ||||
| Large section bar | 80mm-350mm ( According to the different requirement) | ||||
| Forging | 180mm-1500mm ( According to the different requirement) |
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Detailed Photos
Packaging & Shipping
| 20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High) | ||||||||||
| 40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High) | ||||||||||
| 40ft HC:12032mm(Length)x2352m(Width)x2698mm(High) | ||||||||||
| 20feet container load 25tons coils whose length is under 5.8m | ||||||||||
| 40feet container load 25tons coils whose length is under 11.8m | ||||||||||
| Packing Details : Bundle with steel strip | ||||||||||
| Delivery Details : Use trays to facilitate loading and unloading | ||||||||||
| Standard Export Seaworthy Package.Suit for all kinds of transport ,or as required | ||||||||||
