17-4PH

Scope of supply of Aviation Group:

Non-standard forgings, round rods, steel plates, rings, seamless pipes

1. 17-4PH material introduction

17-4PH alloy is precipitation hardening martensitic stainless steel composed of copper, niobium.

Corresponding grade: 0Cr17Ni4Cu4Nb, 05Cr17Ni4Cu4Nb, S17400

2. 17-4PH chemical composition

3. 17-4PH physical properties

Mechanical properties of 17-4PH alloy at room temperature:

4. 17-4PH corrosion resistance

• The corrosion resistance of 17-4PH alloy is better than any other standard hardenable stainless steel plate. In most cases, its corrosion resistance is no less than 304.
• If there is a risk of stress corrosion cracking, the higher aging temperature must be above 550°C (1022°F), preferably 590°C (1094°F).
• The tempering temperature in the chloride medium is 550°C-1022°F.
• The tempering temperature in H2S medium is 590°C-1094°F.
• It is susceptible to corrosion or crack corrosion in static seawater.
• Its corrosion resistance is the same as the 304L grade in petrochemical, food processing and paper industry.

5. 17-4PH application fields

• Maritime platform, helicopter deck, other platforms
• Food Industry
• Pulp and paper industry
• Aerospace (turbine blades)
• Mechanical components