BG-42Ⓡ (AMS 5749)
BG42 is a high performance, martensitic, high speed stainless steel designed for critical aerospace and bearing applications . BG42 combines the hot hardness characteristics of M-50 and the corrosion resistance of 440c Stainless. The cleanliness is assured by the double vacuum melting process (VIM/VAR), and the 14.5% chromium offers superior oxidation and corrosion resistance. BG42 is most often used in high performance aerospace applications, like bearings, but the excellent properties also make it a superior choice for cutlery. All BG42 from Sullivan Steel is Made in the USA.
| FOR REQUIREMENTS: | Critical Bearing Applications |
| MELT PRACTICE: | VIM-VAR |
| SPECIFICATIONS & TRADEMARKS: |
Lescalloy BG42 AMS 5749 S42700 |
Benefits of BG 42
- Superior Corrosion Resistance compared to M-50
- Excellent high temperature performance up to 900F
Typical Applications
- Critical Aerospace Bearings
- Gas Turbines
- Cutlery
Chemical Composition – VIM-VAR
| C | Cr | Si | Ni | V | W | Mn | Mo | S | P | Co | Cu | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min. | 1.15 | 14.50 | .30 | – | 1.20 | – | 0.50 | 4.00 | – | – | – | – |
Stocking Sizes
0.5625″ – 2.5″
