17-4 PH Precipitation Hardening Stainless Steel

Short Description:

Material: 17-4 PH precipitation hardening stainless steel

Manufacturing Process: Melting and Casting, Hot Working, Solution Annealing, Machining

Application: Aerospace, Medical Devices, Marine

Available Test: Mechanical Testing, Tensile Test, Hardness Test, NDT

17-4 PH is a precipitation hardening martensitic stainless steel. It is known for its high strength, hardness, and excellent corrosion resistance.

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17-4 PH Precipitation Hardening Stainless Steel Detail:

Main Composition

Carbon (C): ≤0.07%

Manganese (Mn): ≤1.00%

Phosphorus (P): ≤0.04%

Sulfur (S): ≤0.03%

Silicon (Si): ≤1.00%

Chromium (Cr): 15.00-17.50%

Nickel (Ni): 3.00-5.00%

Copper (Cu): 3.00-5.00%

Niobium (Nb) + Tantalum (Ta): 0.15-0.45%

Key Features

1. High Strength and Hardness: 17-4 PH can achieve very high strength and hardness through precipitation-hardening treatment, making it suitable for applications requiring high strength.

2. Good Corrosion Resistance: While not as corrosion-resistant as austenitic stainless steels like 304 and 316, it still offers good corrosion resistance in most environments.

3. Good Weldability: It can be welded using various welding processes. Post-weld heat treatment is recommended to achieve optimal properties.

4. Good Machinability: It has good machinability in the solution-treated condition and can further improve mechanical properties after heat treatment.

17-4PH precipitation hardening stainless steel (7)

17-4PH precipitation hardening stainless steel (9)

After appropriate precipitation-hardening heat treatment, 17-4 PH stainless steel can achieve the following typical mechanical properties:

Tensile Strength: 930-1310 MPa (135-190 ksi)

Yield Strength: 725-1100 MPa (105-160 ksi)

Elongation: 10-20%

Reduction of Area: 40-60%

Hardness: HRC 28-38

Grades from different countries

United States

Japan

Germany

United Kingdom

France

UNS S17400

JIS SUS630

DIN 1.4542

BS 560S17

AFNOR Z6CNU 17-04

Applications

Due to its combination of properties, 17-4 PH stainless steel is widely used in the following fields:

Aerospace Industry: Components such as turbine parts, structural parts, etc.

Chemical and Petrochemical Industry: Items like reaction vessels, valves, pumps, etc.

Medical Devices: Instruments like surgical tools, dental equipment, etc.

Power Generation: Components for nuclear reactors, among others.

Food Processing Equipment: Machinery parts for food production lines.

Overall, 17-4 PH stainless steel plays a crucial role in various industrial sectors due to its excellent comprehensive properties and broad application prospects.

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17-4PH