4130 Chrome Moly Round Bar

4130 Chrome Moly Round Bar

Size Selection

  • Weight
    0.094 lbs/ft
  • SKU #
    1 41B18
  • Weight
    0.167 lbs/ft
  • SKU #
    1 41B25
  • Weight
    0.261 lbs/ft
  • SKU #
    1 41B31
  • Weight
    0.376 lbs/ft
  • SKU #
    1 41B37
  • Weight
    0.668 lbs/ft
  • SKU #
    1 41B50
  • Weight
    1.044 lbs/ft
  • SKU #
    1 41B62
  • Weight
    1.504 lbs/ft
  • SKU #
    1 41B75
  • Weight
    2.046 lbs/ft
  • SKU #
    1 41B87
  • Weight
    2.673 lbs/ft
  • SKU #
    1 41B0100
  • Weight
    3.383 lbs/ft
  • SKU #
    1 41B0112
  • Weight
    4.176 lbs/ft
  • SKU #
    1 41B0125
  • Weight
    5.053 lbs/ft
  • SKU #
    1 41B0137
  • Weight
    6.014 lbs/ft
  • SKU #
    1 41B0150
  • Weight
    7.058 lbs/ft
  • SKU #
    1 41B0162
  • Weight
    8.186 lbs/ft
  • SKU #
    1 41B0175
  • Weight
    9.397 lbs/ft
  • SKU #
    1 41B0187
  • Weight
    10.690 lbs/ft
  • SKU #
    1 41B0200
  • Weight
    16.710 lbs/ft
  • SKU #
    1 41B0250
  • Weight
    24.060 lbs/ft
  • SKU #
    1 41B0300
Total Footage*:
Size Specifications:

4130 bars are produced in “random lengths” that range between 11 to 13 feet long. Cut pieces available.


4130, also known as Chrome Moly (so named for 2 key elements of its composition, chromium and molybdenum), is a general-purpose alloy steel that has been widely used by the aviation and motorsports industries for years. Weldability, fabrication, and mild hardenability make it a popular choice in all forms – tube, bar, sheet, and plate.

Nearly all of our 4130 bars are produced as “Cold Finished Normalized,” which is also known as “Condition D4”. 4130 bars generally meet several AMS specifications, but the most common are AMS-S-6758 and AMS- 6348, but several others may also apply.


Technical Mechanical Properties

Tensile Strength min. Yield Point min. Elongation min. % in 2" Reduction of Area min.
125,000 psi 100,000 psi 17% 55%

* These properties apply to material in the Physical Condition F (hardened and tempered). This is the only published information available.

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