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.

What is 17-4PH used for?

17-4 PH stainless steel can be used for a variety of industries including pump shafts, oil path, mechanical seals, and within the aerospace industry . Its composition is carbon, chromium, columbian + tantalum, copper, manganese, nickel, phosphorous, silicon, and sulfur.

What is the difference between H1150 and HH1150?

HH1150 Condition A material heated 4 hours at 1150°F, air cooled, heated again for an additional 4 hours at 1150°F and air cooled. H1150-M Condition A material heated at 1400°F + 25°F for 2 hours, air cooled, then heated at 1150°F + 15°F for 4 hours and air cooled.

What type of material is 17-4PH?

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.

Does 17-4PH 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.

Will 17 4PH 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 4PH?

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.

What is H1100 condition?

Stainless Steel 17-4 H1100 is a precipitation-hardening martensitic Stainless Steel , which has corrosion resistance comparable to austenitic varieties. Our H1100 has been heat-treated to a minimum tensile strength of 140ksi, yield strength of 115ksi, an elongation in 2in of 14%, and a reduction of area of 45%.

What is HH1150?

Stainless Steel 17-4 Condition HH1150 is 17-4 material that has been heat treated twice at a temperature with a range between 1140F and 1160F for a length of time of 225-255 minutes. This material will become softer than it is in the annealed condition after it is heat treated at such a high temperature.

Is 17 4PH stainless steel magnetic?

Its intense tensile strength keeps its ductility and hardness at temperatures at nearly 600°F, while still demonstrating exceptional corrosion resistance in all conditions offered by Premium Alloys. Just as all martensitic metals, 17-4 is magnetic .

Is 316L stainless steel?

SAE 316L grade stainless steel, sometimes referred to as A4 stainless steel or marine grade stainless steel, is the second most common austenitic stainless steel after 304/A2 stainless steel. ... 316L grade is the low carbon version of 316 stainless steel.

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 Rockwell hardness of 17-4 stainless steel?

What is H900 steel?

MIM 17-4 H900 is a precipitation hardening stainless steel . It offers a good balance between corrosion resistance and strength. It is magnetic and also hardens to various strength levels by varying the aging heat treat temperature.

Is 304 SS magnetic?

All stainless steel is magnetic except austenitic stainless steel which is actually 300 series stainless such as 304 and 316. ... martensitic stainless steel) is magnetic. Stainless steel containing more nickel (310 and 316 grades) is more likely to remain non-magnetic after cold work.

What kind of stainless steel is 410?

General Properties

Alloy 410 (UNS S41000) is a 12% chromium martensitic stainless steel plate that can be heat treated to obtain a wide range of mechanical properties. The alloy has good corrosion resistance along with high strength and hardness.

Does stainless 304 rust?

304 stainless steel is the most common form of stainless steel used around the world due to excellent corrosion resistance and value . 304 can withstand corrosion from most oxidizing acids. That durability makes 304 easy to sanitize, and therefore ideal for kitchen and food applications.

What is meant by austenitic stainless steel?

Austenitic refers to an alloy consisting mainly of austenite . The most widely used grade of stainless steel is austenitic. Austenitic alloys contain a high percentage of nickel and chromium, which makes them, and the steel made from them, very resistant to corrosion.

How is duplex stainless made?

Duplex stainless steels are called “duplex” because they have a two-phase microstructure consisting of grains of ferritic and austenitic stainless steel . ... When duplex stainless steel is melted it solidifies from the liquid phase to a completely ferritic structure.

Does stainless steel age Harden?

The high tensile strengths of precipitation hardening stainless steels come after a heat treatment process that leads to precipitation hardening of a martensitic or austenitic matrix. ... This is known as ageing or age-hardening. As it is carried out at low temperature, the component undergoes no distortion.

What is precipitation hardened stainless steel?

The precipitation hardening (PH) stainless steels are a family of corrosion resistant alloys some of which can be heat treated to provide tensile strengths of 850MPa to 1700MPa and yield strengths of 520MPA to over 1500MPa – some three or four times that of an austenitic stainless steel such as type 304 or type 316.

How hard is H900?

It is one of the most widely used precipitation hardening grades, as it has high strength hardness up to about 572°F while demonstrating good corrosion resistance in all heat treated conditions. ... Its mechanical properties can be optimized with heat treatment where very high yield strength up to 180 ksi can be achieved.

What is H1025 condition?

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.

How does precipitation hardening strengthen metals?

Precipitation hardening, also called age or particle hardening, is a heat treatment process that helps make metals stronger. The process does this by producing uniformly dispersed particles within a metal’s grain structure that help hinder motion and thereby strengthen it—particularly if the metal is malleable.

What is ASTM A564?

ASTM A564 is a standard material specification for hot-rolled and cold-finished age-hardening stainless steel bars , including type 630 / UNS S17400 / 17-4 PH used for parts requiring corrosion resistance and high strength at room temperature, or at temperatures up to 600°F [315°C].

What is H1075 condition?

Stainless steel 17-4 H1075 is stainless steel grade 17-4, also known as 630 alloy that has been heat treated at a temperature between 1065° F and 1085° F for 3.75 hours to 4.25 hours . After treating the steel at a temperature of 1075° or higher, it will become softer than in the annealed form.

What is ASTM A240?

304 and 304L ASTM A240 stainless steel plate is a standard 18-8 material – meaning it contains 18% chromium and 8% nickel. 304 Stainless steel plate is one of the most versatile stainless steel materials available. It has excellent forming and welding characteristics.

What is ASTM F899?

ASTM F899, 2020 Edition, February 1, 2020 – Standard Specification for Wrought Stainless Steels for Surgical Instruments . This specification covers the chemistry requirements for wrought stainless steels used for the manufacture of surgical instruments.

Can 316L rust?

If it is being exposed to bleach or other chlorides even 316L can rust.

What is precipitation hardening process?

Precipitation hardening is a method that makes use of heat application to a pliable material, like metal alloy, to make it tougher . This technique gives strength to alloys by hardening them and adding fine, solid impurities known as precipitates.

Is 303 stainless steel corrosion resistant steel?

Alloy 303 is resistant to mildly corrosive environments . However, the alloy’s corrosion resistance is inferior to 304 in most applications. Its corrosion resistance is superior to 416, another free-machining grade, but is somewhat inferior to other 400 series stainless steels which do not contain higher sulfur levels.

Which is better 316 or 316L?

316L is the superior choice for high corrosion and high temperature applications. Since 316L contains less carbon than 316, it has better intergranular corrosion resistance, meaning its welds won’t decay, unlike with 316 stainless steel.

Can you wear 316L stainless steel in the shower?

And yes , you can shower wearing your stainless steel jewelry and exposing it to water won’t cause it to rust. ... The best type is the 316L, which is used to make luxury jewelry. It also contains a high amount of chromium and a low amount of nickel and carbon.

Can you heat treat 17-4 stainless?

The ATI 17-4TM 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.

What happens when you anneal metal?

Annealing steel or any other metal involves heating it to a specific temperature and allowing it to cool at a specified rate . Doing so removes impurities in the grain, increasing the metal’s ductility and reducing its hardness.

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.

Can you machine 17 4 H900?

Machining: Machining 17-4PH Condition A has machining characteristics similar to stainless grades 302, 304 and 410. The high hardness and strength in Condition H900 is the most difficult to machine and the material should be machined at 60% of the rate used for Condition A.

Can precipitation hardening be reversed?

The properties of precipitation hardenable stainless steels can be enhanced by selection of appropriate heat treating parameters. ... Manufacturing processes may result in the premature start of the final precipitation age hardening process, which can be reversed through re-solution treating prior to further processing.