What is the hardness of 17-4 H900?
190,000
17-4 PH Stainless Steel Properties
| Condition | Ultimate Tensile Strength (PSI) | Hardness Brinell |
|---|---|---|
| H900 | 190,000 | 388 |
| H1025 | 155,000 | 331 |
| H1075 | 145,000 | 311 |
| H1150 | 135,000 | 277 |
Will 17-4 PH rust?
The martensitic PH stainless grades like 17-4 and 15-5 will also rust. Note that Alloy 36 (36% NI, balance iron) will readily rust. It is not a stainless steel, since it has no chromium. These alloys are commonly delivered from the mill with a light rust or dark oxide on the surface.
What type of material is 17-4 PH?
Stainless Steel
17-4 PH Stainless Steel is a precipitation hardening martensitic stainless steel. Typical usage is seen in applications requiring high strength and a modest level of corrosion resistance.
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.
Can a 17-4 work hardened?
In the hardened condition 17-4 will not work harden significantly. I presume that you heat treat first since you need tighter dimensional tolerance than you can get with post-machining heat treatment. You might consider heat treating to a higher age temp, machine, and then re-heat treating.
Does 17-4 need to be heat treated?
The ATI 17-4™ precipitation hardening stainless steel is readily welded using conventional inert gas methods used for stainless grades. Preheating is not usually required. Postweld heat treating is needed to produce the various precipitation hardened heat treatment properties.
What is the difference between 17-4 and 17-4 PH?
Can you heat treat 17-4 stainless?
The ATI 17-4™ precipitation hardening stainless steel is furnished in the annealed condition. 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.
How hard can you heat treat 17-4?
Alloy 17-4 can be heat treated to a variety of temperatures to develop a wide range of properties. Its mechanical properties can be optimized with heat treatment where very high yield strength up to 180 ksi can be achieved. Alloy 17-4 should not be used at temperatures above 572°F or at very low temperatures.
Is 17 7 stainless magnetic?
Type 17-7 PH is a Chromium-Nickel-Aluminum, austenitic stainless steel. It is the most formable of all PH grades and has the highest strength and hardness. It is less magnetic than other PH grades and offers minimal distortion upon heat treatment. This material maintains its valuable properties at temperatures up to 800° F (427° C).
What is the yield strength of stainless steel?
Stainless Steel – An alloy of steel, chromium and manganese produces a corrosion-resistant metal with yield strength of up to 1,560 Mpa and a tensile strength of up to 1,600 Mpa. Like all types of steel, this alloy is highly impact resistant and scores mid-range on the Mohs scale.
What is the pH of steel?
The martensitic PH steels, of which 17/4PH is the most common, transform to martensite at low temperatures, typically around 250°C, and are further strengthened by ageing at between 480 and 620°C.