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MedicalAM 355 (Also known as PYROMET 355) is a chromium nickel molybdenum stainless steel. This alloy is a heat treatable austenitic / martensitic alloy (depending on the heat treatment). It offers high strength at moderately elevated temperatures and its corrosion resistance is superior to other quench-hardenable martensitic stainless steels. Higher strengths can also be obtained through cold working processes. This product is typically used for parts requiring oxidation resistance and high strength up to 800 F (427 C) and where such parts may require welding during fabrication. The material is well-suited for a wide range of applications. It is often used in structural applications, marine environments, and chemical processing plants. (UNS S35500)
Chemical Makeup
| Element | Min | Max |
|---|---|---|
| Carbon, C | 0.1 | 0.15 |
| Manganese, Mn | 0.5 | 1.25 |
| Silicon, Si | - | 0.5 |
| Sulfur, S | - | 0.03 |
| Phosphorus, P | – | 0.04 |
| Chromium, Cr | 15 | 16 |
| Nickel, Ni | 4 | 5 |
| Nitrogen, N | 0.07 | 0.13 |
| Molybdenum, Mo | 2.5 | 3.25 |
Common Applications
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Industrial
Benefits
- Corrosion Resistance
- Oxidation Resistance
- High Strength At Moderate Temperatures
We stock AM-355 to the following specifications:
- AMS-5743
- AMS-5744 CAP. OF
- ASTM-A-484
- ASTM-A-564 TYPE 634 CAP. OF
- EMS-55443
- HONEYWELL 91547-M3710 CHEM ONLY
Click on a cross-section to see the sizes we stock: