17-4 Stainless Steel

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17-4 Stainless Steel, also known as 17-4 PH or UNS S17400, is a high-performance precipitation-hardening martensitic stainless steel renowned for its exceptional combination of strength, hardness, and corrosion resistance. This alloy contains approximately 17% chromium, 17-4 ph stainless steel 4% nickel, and 3–5% copper, offering a balanced blend of Roofing Copper mechanical properties and durability.

What is 17-4 stainless steel used for?

17-4 stainless steel is used in a wide range of industries due to its excellent 17 4 stainless combination of high strength, hardness, and corrosion resistance. Here are some common applications:

1. Aerospace and Defense:

   • Components like landing gears, actuators, missile parts, and structural elements due to its strength and fatigue resistance.

2. Chemical and Petrochemical Processing:

   • Valves, pumps, shafts, and other equipment exposed to corrosive environments.

3. Marine Industry:

   • Parts like propeller shafts and valve stems because of its resistance to seawater corrosion.

4. Food Processing:

   • Equipment such as mixers, pumps, and other parts that require corrosion resistance and easy cleaning.

5. Medical Devices:

   • Surgical instruments, orthopedic implants, and medical tools due to its strength and biocompatibility.

6. Energy Industry:

   • Components used in nuclear power plants, power generation, and other energy systems, where high strength and corrosion resistance are essential.

7. Automotive:

   • Some high-performance engine parts and other automotive components where strength, toughness, and corrosion resistance are required.

17-4 stainless steel is versatile and is often selected for 17-4 steel applications requiring high strength and resistance to both stress and corrosion, especially in harsh environments.

Key Features:

• High Strength and Hardness: 17-4 Stainless Steel can achieve an ultimate tensile strength of up to 190 ksi (1310 MPa) and a yield strength of 160 ksi (1103 MPa) in its hardened condition, making it suitable for demanding structural applications.

• Excellent Corrosion Resistance: Comparable to Type 304 stainless steel, it exhibits superior resistance to corrosion, including stress corrosion cracking, in various environments such as marine, chemical, and petrochemical settings.

• Versatility in Fabrication: Available in multiple heat-treated conditions (H900, H1025, H1075, H1100, H1150, and H1150M), 17-4 Stainless Steel offers flexibility in achieving desired mechanical properties, facilitating its use in diverse applications.

• Magnetic Properties: As a martensitic alloy, it is magnetic, which can be advantageous in certain applications requiring magnetic permeability.

Applications:

17-4 Stainless Steel is widely utilized across various industries due to its robust properties:

• Aerospace and Defense: Components such as landing gear, actuators, and missile parts benefit from its high strength and resistance to fatigue.

• Chemical and Petrochemical Processing: Valves, pumps, and shafts exposed to corrosive environments are made from this alloy to ensure longevity and reliability.

• Marine Industry: Parts like propeller shafts and valve stems are crafted from 17-4 Stainless Steel for its resistance to seawater corrosion.

• Food Processing: Equipment requiring stringent hygiene standards, such as mixers and pumps, utilize this alloy for its ease of cleaning and corrosion resistance.

• Medical Devices: Surgical instruments and orthopedic implants benefit from its biocompatibility and strength.

17-4 Stainless Steel stands out as a versatile and durable material suitable for a wide range of applications. Its unique combination of high strength, hardness, and corrosion 17 4 steel resistance, along with its adaptability through various heat treatments, makes it a preferred choice for engineers and designers seeking reliable performance in challenging environments.