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In ChinaA 646 Grade Nit. 135 material is SAE A 646/A 646M (2011) Premium Quality Alloy Steel Blooms and Billets for Aircraft and Aerospace Forgings Premium Quality Alloy Steel Blooms and Billets for Aircraft and Aerospace Forgings.
Chemical composition of A 646 Grade Nit. 135, A 646 Grade Nit. 135 mechanical properties, A 646 Grade Nit. 135 datasheet, A 646 Grade Nit. 135 equivalent grade, Heat treatment and temperature process of A 646 Grade Nit. 135.
| SAE A 646/A 646M (2011) Premium Quality Alloy Steel Blooms and Billets for Aircraft and Aerospace Forgings |
| A 646 Grade Nit. 135 |
| C: | 0.38 | 0.43 |
| Si: | 0.20 | 0.40 |
| Mn: | 0.50 | 0.70 |
| Cr: | Max | Min |
| Ni: | 0.30 | 0.40 |
| Mo: | Max | Min |
| Co: | Max | Min |
| W: | 0.95 | 1.30 |
| Al: | Max | Min |
| Cu: | Max | Min |
| Ti: | Max | Min |
| Fe: | Max | Min |
| Rp0.2 (MPa) | 123 (≥) |
| Rm (MPa) | 832 (≥) |
| AKV (J) | 13 |
| A (%) | 42 |
| Z (%) | 11 |
| Hardness | HBW 413 |
| A 646 Grade Nit. 135 Round bar: | 1mm-800mm |
| A 646 Grade Nit. 135 Square bar: | 10mm * 10mm-600mm *600mm |
| A 646 Grade Nit. 135 Flat bar: | Thickness:8mm-800mm Width:10mm to 1500mm |
| A 646 Grade Nit. 135 Sheet or Plate: | Thickness:3mm-80mm Width:1.5mm to 1500mm |
| A 646 Grade Nit. 135 Strip or Coil: | Thickness:0.1mm-3mm Width:1.5mm-1500mm |
| A 646 Grade Nit. 135 Forgings: | Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes |