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AM 355

Shapes Available

  • Round Bar
  • Sheet


  • Aerospace

Industry Names

  • Alloy 355


  • Specialty Steel


  • AMS 5743
  • AMS 5744


  • Blades
  • Gas Turbines
  • Rotors


  • Excellent Corrosion Resistance

AM 355 is a Molybdenum-Chromium-Nickel steel that can be heat treated through precipitation hardening. This alloy can be used in aerospace applications that undergo elevated temperatures. AM 355 offers great corrosion resistance especially when compared to other martensitic stainless grades. It responds well to both hot working and cold working but when machining or hot/cold working please consult a metallurgist to ensure the proper procedures are being followed.

Looking for where to buy AM 355? Call Michlin Metals today. It is readily available in round bar. For other shapes like sheet, it would likely require larger quantities. For more specialty alloys click here. 

Please contact us to request a quote. We specialize in hard to find material.

We work closely with many manufacturers in the aerospace & defense industry. We work with NADCAP approved heat treaters and testing laboratories. We can supply DFARS compliant material.

Metal Properties
Density .286 lb/inch³
Ultimate Tensile Strength 216 ksi
Chemical Composition
C0.10 0.15
Cr15.00 16.00
Mn0.50 1.25
Mo2.50 3.25
N4.00 5.00
Ni0.07 0.13
P- 0.040
S- 0.030
Si- 0.50

DISCLAIMER: The information provided on this Web site, technical or otherwise, is merely for informational purposes, and is not intended to serve as a guide, manual, instructions, or any kind reference for proper safety procedures or material purchasing. Michlin Metals makes no warranty, express or implied, based on the statements on this Web site and, as such, will not be liable for any damages, either direct or indirect, including but not limited to consequential damages, such as damages for loss of profits, that may arise based on reliance on the information provided on this Web site. Some information has been referenced from reliable industry sources. Tradenames listed are the sole property of the tradename owners. Michlin Metals typically provides branded products through its relationships with mills and authorized re-sellers. Equivalent non-branded product is sometimes also available through certified sources of such products. Michlin Metals will never substitute non-branded product when branded product is requested.

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