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4130 (AMS 6346) Chrome Molybdenum Steel Tubes4130 (AMS 6346)

Chrome Molybdenum Steel Tube

4130 is a chromium-molybdenum alloy which is one of the most widely used aircraft steels because of its combination of ease of fabrication, weldability and mild hardenability.

It has adequate strength for many applications and when resistance to wear and abrasion is required, it may also be nitrided. 4130 is a high quality product melted under the best steel making practices for aircraft quality steels. It is vacuum degassed to meet the magnetic particle inspection standards of AMS 2301. The density of this material is typically 7.85kg/dm³.

Key Features:

4130 (AMS 6346) is easy to fabricate and is used extensively throughout the aerospace sector. Other benefits include good weldability and mild hardenability although corrosion resistance is low.

Technical Assistance

Our knowledgeable staff and resident metallurgists will be pleased to assist you further on any technical topic. Smiths Metal Centres Limited also boasts an in-house UKAS Accredited Testing Laboratory which is unique within the multi-metal and plastic stockholding sector. We believe this underlines our total commitment to quality and our ethos of being the complete service provider.

Download 4130 (AMS 6346) Aerospace Chrome Molybdenum Steel Tube Datasheet

Typical Applications:

  • Aerospace component manufacture
  • Gears
  • Automotive parts
  • Rock crushing machinery
  • Used for resistance welding
  • Bearings
  • Cutting tools

We offer 4130 (AMS 6346) in pipe/tubes.


We offer a wide range of processing services throughout the Smiths Group both at our Head office in Biggleswade and at local service centre level. These services include bandsaw tube cutting and tube honing services - this enables us to supply our pipe and tube material to you to meet your immediate needs in term of size.

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To find out more about Smiths Metal Centres extensive range of high quality aerospace stainless steel tubes, click on one of our products on the side menu of this web page.

Have a question or need a detailed quote?

Our staff are ready to take your call. For all supply and technical enquiries call us today
on 0845 527 3331 or click here to contact us.