martensitic stainless steel
Alloy 17-4PH (UNS S17400), Type 630, is a chromium-nickel-copper precipitation-hardening martensitic stainless steel with an addition of niobium. 17-4PH combines high strength and hardness with good corrosion resistance.
How hard is 17-4 PH stainless steel?
17-4PH Stainless Steel High strength is maintained to approximately 600 degrees Fahrenheit (316 degrees Celsius). Alloy 17-4 PH is a precipitation hardening martensitic stainless steel with Cu and Nb/Cb additions. The grade combines high strength, hardness (up to 572°F / 300°C), and corrosion resistance.
What is the Rockwell hardness of 17-4 stainless steel?
The mechanical properties of annealed grade 17-4 stainless steel are displayed in the following table….Mechanical Properties.
| Properties | Metric | Imperial |
|---|---|---|
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Hardness, Brinell | 352 | 352 |
| Hardness, Knoop (estimated from Rockwell C) | 363 | 363 |
What is the hardness of 17-4 PH?
17-4 PH Stainless Steel Properties
| Condition | Ultimate Tensile Strength (PSI) | Hardness Rockwell |
|---|---|---|
| H900 | 190,000 | C40 |
| H1025 | 155,000 | C35 |
| H1075 | 145,000 | C32 |
| H1150 | 135,000 | C28 |
Does 17-4 PH work harden?
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.
What is condition A in 17-4 PH?
17-4 PH is a martensitic precipitation hardening (age hardening) stainless steel that can provide both high strength and excellent corrosion resistance. In the annealed (solution treated condition- Condition A) the density of this material is 0.280 lb/in^3. H 900 density is 0.282 lb/in^3.
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 does the PH stand for in 17-4 PH?
PH stainless steels are a group of alloys that are resistant to the effects of corrosion. To increase their yield strength, these alloys are subjected to heat treatment during precipitation hardening (PH) or age hardening.
Is 17 4ph stainless steel magnetic?
17-4 stainless steel, otherwise known as SAE Type 630 is frequently used with operations demanding high tensile strength and a middling level of corrosion resistance. 17-4 PH is the most used grade of martensitic precipitation hardenable alloys. Just as all martensitic metals, 17-4 is magnetic.
How hard can you heat treat 17-4?
High strength is maintained to approximately 600°F (316°C). This alloy is designated Grade or Type 630 in several specifications. Heat treatment in the 900°F (482°C) range produces highest strength, although slightly less than that of alloys like S17700 or S15700.
What is 17-4 PH heat treated?
17-4 PH is a martensitic precipitation hardening (age hardening) stainless steel that can provide both high strength and excellent corrosion resistance. In the annealed (solution treated condition- Condition A) the density of this material is 0.280 lb/in^3.
Does 17 4ph work harden?
What is 17-4PH stainless steel?
17-4PH Stainless Steel Sheet, Coil and Plate – AMS 5604, UNS S17400. 17-4 PH is a martensitic, chromium-nickel-copper precipitation-hardening stainless steel.
What does 17-4 mean?
17-4 PH is a versatile material widely used in the aerospace, chemical, petrochemical, food processing, paper and general metalworking industries. 17-4 PH Stainless Steel withstands corrosive attack better than any of the standard hardenable stainless steels and is comparable to Type 304 in most media.
What is type 17-4 PH?
Type 17-4 PH (AMS 5604) is the most widely used of all precipitation-hardening steels. Compared to other PH alloys, it requires a simple heat treatment to produce a wide range of properties, including its high strength. It has a slightly higher ferrite content than other PH grades, making it a bit more magnetic.
Can 17-4PH be welded?
Alloy 17-4PH can be easily welded and processed by standard shop fabrication practices. It is magnetic. Heat Treatment Alloy 17-4PH is provided in the solution-annealed condition (Condition A). Mechanical properties may be altered by subsequent age hardening treatments.
