4130N Chromoly Steel Plate
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Specifications
| Plate Thickness | 9"x12" | 12"x18" | 18"x18" | 18"x24" | 18"x36" | 18"x72" |
|---|---|---|---|---|---|---|
| 0.063" (1/16 in.) | 1.93 lbs | 3.85 lbs | 5.78 lbs | 7.71 lbs | 11.56 lbs | 23.13 lbs |
| 0.090" (3/32 in.) | 2.75 lbs | 5.50 lbs | 8.26 lbs | 11.01 lbs | 16.52 lbs | 33.03 lbs |
| 0.125" (1/8 in.) | 3.85 lbs | 7.71 lbs | 11.56 lbs | 15.42 lbs | 23.13 lbs | 46.26 lbs |
| 0.190" (3/16 in.) | 5.81 lbs | 11.62 lbs | 17.44 lbs | 23.25 lbs | 34.88 lbs | 69.75 lbs |
| 0.250" (1/4 in.) | 7.66 lbs | 15.32 lbs | 22.97 lbs | 30.63 lbs | 45.95 lbs | 91.89 lbs |
Find the right combination Chromoly Sheet for your project
The Chassis Shop is your high quality 4130N steel plate supplier. We offer a large selection of thicknesses, in several convenient pre-cut sizes to meet your project size requirements.

Available Chromoly Plate Sizes:

Chromoly Steel Plate Defined:
This Chromoly flat steel has a smooth surface finish. The primary difference between hot and cold rolled 4130N sheet / plate material is cosmetic, the mechanical strength is very similar.
Our Chromoly sheet and plate is aircraft grade 4130 condition N (normalized), spec AMS-6345-C. This alloy steel is perfect for fabricating high strength custom tabs and brackets.
This alloy material is widely used in aviation and racing because of its strength, weld-ability and ease of fabrication.
Due to how steel plate is produced it is never perfectly flat.
The edges are either sheared or plasma cut, the heat generated by cutting does create a crispy thin layer of hardness. It is recommended to grind off the edge hardness before attempting to cut this material - this will help reduce the potential of prematurely dulling the teeth of your cutting tools.
Note: Cut tolerance on this material is typically + or - 1/4" the referenced size.
Welding should always be performed by a qualified welder.
Questions and Answers
Is 4130N Chromoly Steel stronger than Mild Steel?
Is 4130N Chromoly Steel lighter than Mild Steel?
Can I weld Mild Steel to Chromoly Steel?
Should I sand off the surface scale of metal before welding?
Do I need to normalize a component or chassis made of 4130N Chromoly Steel after welding?
Why does this 4130N Chromoly plate cost more than others?
Pro Tips
Bending 4130N Chromoly Plate
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