What kind of material is 17-4?
What kind of material is 17-4?
stainless steel
17-4 stainless steel, also known as SAE Type 630, is a common and exceptionally durable type of steel used in a diverse variety of industries and applications. The numbers “17-4” refer to its composition: ≈17% chromium and ≈4% nickel.
How hard is 17-4 PH stainless steel?
Properties. 17-4 can be heat treated to high levels of strength and hardness, and features corrosion resistance and machinability comparable to austenitic 304 stainless. Being martensitic, 17-4 is magnetic. 17-4 is capable of being hardened up to approximately 44 Rc when heat treated to condition H900.
What is the Rockwell hardness of 17-4 stainless steel?
Grade 17-4 stainless steel is the most widely used steel of the precipitation hardening grade steels. It has high toughness, strength, and corrosion resistance….Mechanical Properties.
| Properties | Metric | Imperial |
|---|---|---|
| Hardness, Brinell | 352 | 352 |
| Hardness, Knoop (estimated from Rockwell C) | 363 | 363 |
| Hardness, Rockwell C | 36 | 36 |
What is the yield strength of 17-4 stainless steel?
17-4 PH Stainless Steel Properties
| Condition | Ultimate Tensile Strength (PSI) | 0.2% Yield Strength (PSI) |
|---|---|---|
| H900 | 190,000 | 170,000 |
| H1025 | 155,000 | 145,000 |
| H1075 | 145,000 | 125,000 |
| H1150 | 135,000 | 105,000 |
What is 17-4 stainless steel 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.
Which is better 304 or 316 stainless steel?
Though the stainless steel 304 alloy has a higher melting point, grade 316 has a better resistance to chemicals and chlorides (like salt) than grade 304 stainless steel. When it comes to applications with chlorinated solutions or exposure to salt, grade 316 stainless steel is considered superior.
What is the difference between 17-4 and 17-4PH?
17-4 PH provides toughness in both base metals and welds. It is well suited to applications that require ease of fabrication and the addition of strength/hardness for improved reliability. Type 17-7 PH stainless steel is a Chromium-Nickel-Aluminum, semi-austenitic stainless steel.
What is 17-4 PH condition A?
Alloy 17-4PH 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. Mechanical properties can be optimized with heat treatment.
Can I heat treat this 17-4?
ATI 17-4™ HEAT TREATMENT SUMMARY OF HEAT TREATING ATI 17-4™ ALLOY Minimum Properties Specified in Aerospace Material Specification (AMS) 5604 Heat Treat to Produce Martensitic Structure Precipitation Heat Treatment to Produce Desired Strength Precipitation Hardening Heat Treatment Yield Strength psi (MPa) Tensile Strength psi (MPa) Hardness Rc
What are the useful properties of stainless steel?
The most important properties of steel are great formability and durability, good tensile and yield strength and good thermal conductivity. As well as these important properties the most characteristic of the stainless steel properties is its resistance to corrosion.
Is 17 4 material magnetic?
Being martensitic, 17-4 is magnetic. 17-4 is capable of being hardened up to approximately 44 Rc when heat treated to condition H900. Overaging (aging beyond the peak strength condition) improves resistance to stress corrosion cracking.
Is type 17-4PH stainless steel magnetic?
The 17-4 pH stainless steel is magnetic and less corrosion-resistant than 316L stainless steel. Standard 316L is slightly magnetic, but non-magnetic versions are available.