Product Overview

17-4PH (also known as UNS S17400 or ASTM A564 Grade 630) is a precipitation-hardening martensitic stainless steel that combines high strength with excellent corrosion resistance. This chromium-nickel-copper alloy achieves its superior mechanical properties through a unique heat treatment process, offering tensile strengths ranging from 1,100 to 1,300 MPa depending on the aging condition. The alloy maintains good toughness and corrosion resistance comparable to Type 304 stainless steel, while providing significantly higher strength levels.

Our comprehensive range of 17-4PH fasteners includes:

· 17-4PH Bolts & Screws: High-strength threaded fasteners available in various head styles and drive types

· 17-4PH Nuts: Precision-engineered to match bolt specifications for secure assemblies

· 17-4PH Washers: Designed for optimal load distribution and corrosion prevention

· 17-4PH Stud Bolts: Double-ended fasteners ideal for flanged connections

· 17-4PH Threaded Rods: Continuous threading for custom length requirements

· 17-4PH Rivets: Permanent fastening solutions for lightweight structures

Key Applications

1. Aerospace & Defense:

  · 17-4PH bolts and 17-4PH screws are extensively used in aircraft engines, landing gear components, and structural assemblies where high strength-to-weight ratio is critical

2. Oil & Gas Industry:

  · 17-4PH stud bolts and 17-4PH nuts serve in wellhead equipment, Christmas trees, and downhole tools exposed to sour gas environments

3. Chemical Processing:

  · 17-4PH fasteners provide excellent resistance to mild corrosive environments in pumps, valves, and processing equipment

4. Medical Equipment:

  · 17-4PH screws and 17-4PH rivets are used in surgical instruments and medical devices requiring biocompatibility and sterilization resistance

5. Marine Engineering:

  · 17-4PH bolts and 17-4PH washers offer reliable performance in marine environments with resistance to saltwater corrosion

6. Power Generation:

  · 17-4PH threaded rods and 17-4PH nuts are employed in turbine components and nuclear power plant applications

Selection Considerations for 17-4PH Fasteners

1. Heat Treatment Condition:

  · Select appropriate aging treatments (H900, H1025, H1075, H1100, H1150) based on required strength-toughness balance

2. Corrosion Resistance Requirements:

  · Evaluate environmental factors including chloride content, pH levels, and temperature exposure

3. Mechanical Properties:

  · Consider tensile strength, fatigue resistance, and stress corrosion cracking requirements

4. Temperature Limitations:

  · Maximum service temperature of 300°C (572°F) for continuous exposure; higher temperatures may require alternative materials

5. Galvanic Compatibility:

  · Pair 17-4PH bolts with 17-4PH nuts to prevent bimetallic corrosion in corrosive environments

6. Certification Requirements:

  · Ensure compliance with relevant standards including ASTM A564, AMS 5643, and NADCAP accreditation for aerospace applications

Why Choose Our 17-4PH Fasteners?

· Precision Manufacturing: Tight dimensional tolerances and consistent quality

· Comprehensive Heat Treatment: Optimized aging processes for maximum performance

· Full Traceability: Material certifications and heat code tracking available

· Technical Support: Expert guidance on material selection and application engineering

Keywords: 17-4PH fasteners, 17-4PH bolts, 17-4PH screws, 17-4PH nuts, 17-4PH washers, 17-4PH stud bolts, 17-4PH threaded rods, 17-4PH rivets, precipitation-hardening stainless steel, high-strength fasteners, corrosion-resistant fasteners, ASTM A564 Grade 630, UNS S17400.

Engineered for Performance in Critical Applications

Contact us today for technical specifications and customized solutions meeting your specific requirements!