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In ChinaA 959 Type 25-4-4 material is SAE A 959 (2011) Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels.
Chemical composition of A 959 Type 25-4-4, A 959 Type 25-4-4 mechanical properties, A 959 Type 25-4-4 datasheet, A 959 Type 25-4-4 equivalent grade, Heat treatment and temperature process of A 959 Type 25-4-4.
| SAE A 959 (2011) Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels | 
| A 176 S44635 | 
| A 240 S44635 | 
| A 268 S44635 | 
| S44635 | 
| SA-240 S44635 | 
| SA-268 S44635 | 
| A 268 25-4-4 | 
| A 791 Grade 25-4-4 | 
| A 803 Grade 25-4-4 | 
| A 959 Type 25-4-4 | 
| K42544 | 
| SA-240 Type 25-4-4 | 
| SA-268 25-4-4 | 
| SA-803 25-4-4 | 
| C: | Max | 0.025 | 
| Si: | Max | 0.75 | 
| Mn: | Max | 1.00 | 
| P: | Max | 0.04 | 
| S: | Max | 0.04 | 
| Ni: | 3.35 | 4.50 | 
| Cr: | 24.50 | 26.00 | 
| Al: | Max | Min | 
| Cu: | Max | 0.50 | 
| Ti: | Max | Min | 
| Fe: | Max | Min | 
| N: | Max | 0.035 | 
| Mo: | 3.50 | 4.50 | 
| Rp0.2 (MPa) | 938 (≥) | 
| Rm (MPa) | 184 (≥) | 
| AKV (J) | 14 | 
| A (%) | 21 | 
| Z (%) | 33 | 
| Hardness | HBW 344 | 
| A 959 Type 25-4-4 Round bar: | 1mm-800mm | 
| A 959 Type 25-4-4 Square bar: | 10mm * 10mm-600mm *600mm | 
| A 959 Type 25-4-4 Flat bar: | Thickness:8mm-800mm Width:10mm to 1500mm | 
| A 959 Type 25-4-4 Sheet or Plate: | Thickness:3mm-80mm Width:1.5mm to 1500mm | 
| A 959 Type 25-4-4 Strip or Coil: | Thickness:0.1mm-3mm Width:1.5mm-1500mm | 
| A 959 Type 25-4-4 Forgings: | Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes |