Seamless 4130 Alloy Steel Tubing

TW’s cold drawn seamless chromoly 4130 tubing is a lighter weight, higher strength alternative to carbon steel. As the market leader in seamless 4130 tubing, TW Metals delivers a full range of rounds, squares, rectangles, and streamline products. Our tubing is manufactured to Mil-T-6736B, AMS-T-6736, ASTM A519, and AMS 6360 specifications. 

Applications of 4130 Tubing

Advantages of 4130 Tubing

  • Excellent weldability
  • High yield strength
  • High ultimate tensile strength
Typical Chemical Properties
Carbon Max 0.33
Manganese Max .60
Phosphorous Max 0.025
Sulfur Max 0.025
Silicon Max 0.35
Chromium Range .80-1.10
Molybdenum Range .15-.25
Typical Mechanical Properties
Tensile Strength Min 90,000 psi
Yield Strength Min 80,000 psi
Elongation Min 10%
Hardness Min 95 HRB
TW Metals offer as wide range of stock sizes and processing capabilities for your company’s 4130 tubing needs. We stock .1875” OD – 5” OD with wall thicknesses .028” thru .625” wall.
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