4130 Chromoly Seamless 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. 

The 4130 Chromoly Advantage

4130 Chromoly is a low-carbon alloyed steel with heightened amounts of chromium and molybdenum. The added chromium helps to increase the material’s hardenability and corrosion resistance, whereas the molybdenum helps increase its toughness and temperature resilience.

As a result, the material is suitable for applications subjected to challenging conditions or elemental exposure. Also called AISI 4130, Alloy Steel Grade 4130, and Chrome Moly Alloy, it offers a variety of other performance characteristics.

  • Strong Creep Strength
  • Excellent Strength-To-Weight Ratio
  • Improved Rigidity
  • High Tensile Strength, Ductility, And Toughness
  • Robust Wear Resistance
  • Easy To Fabricate
  • Good Impact Resistance
  • Lighter Than Other Carbon Steels

4130 Chromoly is easily hardened by heat treating or work hardening. It can be case-hardened using carburizing. When annealed, it exhibits good formability, machinability, and weldability.

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SKU Description DFARS Manufacture Method OD Wall Specification
Sku: 35233 Description: SMLS CD 4130 6736 3/8 SQ X .035 WA DFARS: Yes Manufacture Method: SEAMLESS & DRAWN OD: 0.3750 Wall: 0.0350 Specification: AMS6360 AMS-T-6736
Sku: 27854 Description: SMLS CD 4130 RD 6736 3/8 X .120 DFARS: Yes Manufacture Method: SEAMLESS & DRAWN OD: 0.3750 Wall: 0.1200 Specification: AMS6360 AMS-T-6736
Sku: 27593 Description: SMLS CD 4130 RD 6736 DFARS: No Manufacture Method: SEAMLESS & DRAWN OD: 0.3750 Wall: 0.0950 Specification: AMS6360 AMS-T-6736
Sku: 27375 Description: SMLS CD 4130 RD 6736 3/8 X .083WA DFARS: No Manufacture Method: SEAMLESS & DRAWN OD: 0.3750 Wall: 0.0830 Specification: AMS6360 AMS-T-6736
Sku: 27374 Description: SMLS CD 4130 RD 6736 3/8 X .083 DFARS: Yes Manufacture Method: SEAMLESS & DRAWN OD: 0.3750 Wall: 0.0830 Specification: AMS6360 AMS-T-6736
Sku: 27075 Description: SMLS CD 4130 RD 6736 3/8 OD X .065 DFARS: Yes Manufacture Method: SEAMLESS & DRAWN OD: 0.3750 Wall: 0.0650 Specification: AMS6360 AMS-T-6736
Sku: 26589 Description: SMLS CD 4130 RD 6736 3/8 X .058 DFARS: Yes Manufacture Method: SEAMLESS & DRAWN OD: 0.3750 Wall: 0.0580 Specification: AMS6360 AMS-T-6736
Sku: 26314 Description: SMLS CD 4130 6736 3/8 X .049 DFARS: Yes Manufacture Method: SEAMLESS & DRAWN OD: 0.3750 Wall: 0.0490 Specification: AMS6360 AMS-T-6736
Sku: 61660 Description: SCD 4130 RD 6736 3/8 X .035 DFARS: No Manufacture Method: SEAMLESS & DRAWN OD: 0.3750 Wall: 0.0350 Specification: AMS6360 AMS-T-6736
Sku: 25872 Description: SCD 4130 RD 6736 3/8 X .035 DFARS: Yes Manufacture Method: SEAMLESS & DRAWN OD: 0.3750 Wall: 0.0350 Specification: AMS6360 AMS-T-6736

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COMMON 4130 CHROMOLOY STEEL USES

The strength, durability, and affordability combination makes AISI 4130 chromoly steel tubing perfect for various applications. Examples include:

Typical Chemical Properties
Carbon Max 0.33
Manganese Max 0.60
Phosphorous Max 0.025
Sulfur Max 0.025
Silicon Max 0.35
Chromium Range 0.80-1.10
Molybdenum Range 0.15-.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.

Your Full-Service 4130 Chromoly Tubing Provider

TW Metals is an ISO 9001:2015-certified seamless 4130 Chromoly tubing supplier. We carry round, square, and rectangular shapes in many sizes and lengths.

Our team is happy to assist if you need stainless steel 4130 chromoly tube but aren’t sure which type is optimal. With years of experience supplying specialty metals for critical applications, they can help you make the right choice.

Comprehensive Chromoly Services

TW Metals strives to make 4130 Chromoly tubing acquisition simple. We offer a full suite of value-added services designed to optimize supply chains, enabling you to focus on your business.

Ensuring Your Get Flawless Material

TW Metals stands behind the products we supply. Material is acquired from trustworthy mills, and compliance is verified upon arrival. Precision equipment is used to ensure our products meet applicable requirements.

Some projects have elevated quality requirements, and we welcome the challenge. Nondestructive examination, or NDE, can be performed upon request to check for imperfections.

  • X-Ray
  • Ultrasonic Testing

Here For You

We understand the time you spend awaiting material can affect your bottom line. That’s why we’re dedicated to turning around orders on time and within budget.

Contact us for more information about 4130 chromoly steel tubing. We’re available to answer your questions.

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