Chrome Moly 4130 Alloy Steel Rectangular Tubes
4130 alloy steel rectangular tubes is also known as 4130 Chromoly steel, is a chrome-molybdenum series low alloy steel with high strength, toughness and hardenability, usually used in quenched and tempered condition.
4130 Alloy Steel Tubes (also known as Chromoly) is an alloy steel with great versatility. The chromium and molybdenum content is sufficient to provide through hardness penetration in fairly light sections. It is naturally resistant to scaling and oxidation. 4130 alloy pipe is also responds to nitriding for excellent wear and abrasion resistance. The finish is clean and smooth both inside and out of the tubing.
Alloy 4130 Steel Rectangular Tubes provide good weldability without compromising steel abrasion and impact resistance. It is also sturdy yet lightweight for use in applications requiring strength without additional weight. These properties make 4130 Steel Tubes commonly used in structural applications, including gears, fasteners, and welded tubing.
ASTM 4130 Steels And Equivalents Chemical Composition
| Standard | Grade | C | Mn | P | S | Si | Cr | Mo |
| ASTM A29 | 4130 | 0.28-0.33 | 0.40-0.60 | 0.035 | 0.040 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
EN10250
/EN10083 | 25CrMo4/
1.7218 | 0.22-0.29 | 0.60-0.90 | 0.025 | 0.035 | ≦0.40 | 0.90-1.2 | 0.15-0.30 |
| JIS G4105 | SCM430/
SCM2 | 0.28-0.33 | 0.60-0.85 | 0.030 | 0.030 | 0.15-0.35 | 0.90-1.2 | 0.15-0.30 |
AISI 4130 Material Properties
Material AISI 4130 steel mechanical properties are given in the table below.
| Steel (UNS) | Tensile strength (Mpa) | Yield strength (Mpa) | Elongation in 50 mm, % | Reduction in area, % | Hardness (HB) | Sample diameter | Conditions |
| AISI 4130 (G41300) | 670 | 435 | 25.5 | 59.5 | 197 | 25mm (1 inch) | Normalized at 870 °C (1600 °F) |
| 560 | 460 | 21.5 | 59.5 | 217 | Annealed at 865 °C (1585 °F) |
| 1040 | 979 | 18.1 | 63.9 | 302 | Water quenched from 855 °C (1575 °F) & tempered at 540 °C (1000 °F) |
Additional Advantages of 4130 Alloy Steel Rectangular Tubes
- Excellent strength-to-weight ratio
- High tensile strength, ductility, and toughness
- Lighter and stronger than carbon steel
- Easy to weld, form, and machine
- Ability to case harden using carburization
- Ability to harden using heat treating or work hardening4130 alloy steel rectangular tubes is also known as 4130 Chromoly steel, is a chrome-molybdenum series low alloy steel with high strength, toughness and hardenability, usually used in quenched and tempered condition.
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