What is condition A for 17-4?
This is also called the solution heat treated condition, or Condition A. Annealing is conducted by heat treating at approximately 1900°F (1040°C) to 1950°F (1065°C) and cooling to room temperature. In this condition, the material possesses a martensitic structure.
What is H900 heat treatment?
Typical heat treat designations are H900 or H1075; where H900 indicates aging at 900°F for one hour and H1075 indicates ageing at 1075°F for 4 hours. In all cases, it is important to start with material that is in the solution treated condition or more commonly called Condition A.
Does 17-4 need to be heat treated?
The AL 17-4 Precipitation Hardening Alloy is furnished in the annealed condition. This is also called the solu- tion heat treated condition, or Condition A. Annealing is conducted by heat treating at approximately 1900°F (1040°C) to 1950°F (1065°C) and cooling to room tem- perature.
What is the hardness of 17-4 annealed?
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Hardness, Brinell | 352 | 352 |
| Hardness, Knoop (estimated from Rockwell C) | 363 | 363 |
| Hardness, Rockwell C | 36 | 36 |
| Hardness, Vickers (estimated from Rockwell C) | 349 | 349 |
What is the difference between 17-4 and 17-4PH?
Type 17-4 PH provides an outstanding combination of high strength, good corrosion resistance, and good mechanical properties at temperatures up to 600°F (316°C). 17-4 PH has slightly more Ferrite than other PH grades, making it a bit more magnetic.
Do you heat treat before or after machining?
This is often the best option for reducing lead times. After CNC machining: Some heat treatments significantly increase the hardness of the material or are used as a finishing step after forming. In these cases, the heat treatment is applied after CNC machining, as high hardness reduces the machinability of a material.
What is condition H1025?
H1025 is the heat treatment condition. The heat treatment process transforms martensite or austenite matrix into precipitation hardening. Hardening is achieved through the accumulation of one or more of the components Titanium, Niobium, and Molybdenum.