AMS standard material SA-437 Grade B4D belongs to the USA, from the steel to the finished product, we have the perfect technology and many years of accumulation of experience, we can now produce products include steel coil, sheet, plate,round bar, square steel, steel wire, steel pipe, forgings, other...
SA-437 Grade B4D Application:Alloy Steel Turbine-Type Bolting Material Specially Heat Treated for High-Temperature Service
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.01 | ||
| Si | - | 0.05 | ||
| Mn | - | 1.50 | ||
| P | - | 0.04 | ||
| S | - | 0.01 | ||
| Ni | - | remaining | ||
| Cr | 0.50 | 1.50 | ||
| Al | 0.10 | 0.50 | ||
| Cu | - | 0.50 | ||
| Ti | - | - | ||
| Fe | 1.00 | 6.00 | ||
| Mo | 26.00 | 30.00 | ||
| Co | - | 2.50 |