17-4PH Stainless Steel Hollow Pipes Combining Strength And Corrosion Protection

17-4PH Stainless Steel Hollow Pipes Combining Strength and Corrosion Protection

Products Specification

17-4PH Stainless Steel Tubing - Product Information

1. Description:
17-4PH Stainless Steel Tubing is a high-performance precipitation-hardening martensitic stainless steel offering an exceptional combination of properties:

• High Strength & Hardness: Achieves significantly higher mechanical properties than standard austenitic grades (like 304/316) through a simple aging heat treatment.

• Good Corrosion Resistance: Resists corrosion comparable to Type 304 stainless steel in many environments, particularly useful for moderate acids, freshwater, steam, and petroleum products.

• Excellent Fabricability: Can be readily machined, welded (in the solution-annealed condition), and formed prior to the final aging treatment.

• Good Mechanical Properties at Elevated Temperatures: Maintains strength up to approximately 600°F (315°C).

• Magnetic: Exhibits magnetic properties, especially in the aged condition.

This versatile material is supplied in the solution annealed (Condition A) state, ready for forming/fabrication and subsequent heat treatment (aging) to achieve the desired strength level (e.g., H900, H1025, H1100, H1150).

2. Key Parameters & Properties (Typical - Solution Annealed & Aged):

• Common Specifications:

  • ASTM A564 (Standard Specification for Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes - covers some tube forms)

  • AMS 5643 (Aerospace Material Specification)

  • UNS S17400

  • DIN 1.4542 / EN X5CrNiCuNb16-4

• Chemical Composition (Typical % Weight):

  • Chromium (Cr): 15.0 - 17.5

  • Nickel (Ni): 3.0 - 5.0

  • Copper (Cu): 3.0 - 5.0

  • Manganese (Mn): 1.00 max

  • Silicon (Si): 1.00 max

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

  • Carbon (C): 0.07 max

  • Phosphorus (P): 0.04 max

  • Sulfur (S): 0.03 max

  • Iron (Fe): Balance

• Physical Properties:

  • Density: 0.282 lb/in³ (7.80 g/cm³)

  • Melting Point: ~ 2560°F - 2625°F (~1400°C - 1440°C)

  • Electrical Resistivity: 30.0 microhm-cm (20°C)

  • Magnetic Response: Magnetic (Martensitic)

• Mechanical Properties (Typical Aged - H900 Condition):

  • Tensile Strength: 190,000 psi min (1310 MPa min)

  • Yield Strength (0.2% Offset): 170,000 psi min (1170 MPa min)

  • Elongation (in 2" or 50mm): 10% min

  • Hardness: Rockwell C 40 - 48 (HRC)

  • *(Properties vary significantly based on Aging Condition: H1025, H1100, H1150 offer lower strength/hardness but improved toughness and stress corrosion cracking resistance)*

• Available Forms & Dimensions (Typical):

  • Types: Seamless Tubing (SMLS), Welded Tubing (Welded & Cold Worked)

  • Outer Diameter (OD): Ranges from small precision diameters (e.g., 0.125" / 3.18mm) up to several inches.

  • Wall Thickness (WT): From light wall (e.g., 0.020" / 0.51mm) to heavy wall, depending on OD.

  • Lengths: Standard cut lengths (e.g., 12ft, 20ft / 3m, 6m), or random lengths. Custom cuts available.

  • Tolerances: Supplied to standard industrial tolerances (e.g., ASTM A269, ASTM A511) or tighter precision tolerances upon request.

• Surface Finish: Typically supplied with a standard mill finish (annealed/pickled). Polished (e.g., #4, #8) or special finishes available upon request.

3. Standards & Certifications:

• Material is produced to meet or exceed relevant ASTM (A564), AMS (5643), and other applicable national/international standards.

• Material Test Reports (MTRs / Certs of Conformance) are available, traceable to heat/lot number, providing chemical analysis and mechanical properties.

• Compliance with RoHS, REACH, and other regulatory requirements can typically be confirmed.

4. Packaging:

• Tubes are carefully packaged to prevent damage during transit and storage.

• Standard Packaging: Bundled securely with protective end caps and wrapped in weather-resistant material (e.g., plastic, paper). Shipped on wooden pallets or in sturdy crates.

• Special Packaging: Available upon request (e.g., individual tube boxing, VCI paper for enhanced corrosion protection, specific palletization requirements).

• All packages are clearly labeled with material grade, size, heat number, quantity, and purchase order information.

5. Value-Added Processing Services:

• Precision Cutting: Cut-to-length, saw cutting, abrasive cutting, laser cutting (depending on size).

• Heat Treatment (Aging): Performed to customer-specified conditions (H900, H925, H1025, H1075, H1100, H1150, H1150M). H1150M is recommended for heavy sections or maximum toughness/resistance to stress corrosion cracking.

• Machining: Turning, milling, drilling, tapping.

• End Forming: Flaring, beading, swaging.

• Welding: TIG (GTAW) welding services (using compatible filler metal like 17-4PH or 630).

• Surface Finishing: Polishing, passivation, light grinding.

• Non-Destructive Testing (NDT): Eddy Current Testing (ECT), Hydrostatic Testing, Ultrasonic Testing (UT) available upon request.

6. Typical Applications:
17-4PH tubing is widely used in demanding applications requiring high strength, good corrosion resistance, and moderate temperature capability:

• Aerospace: Aircraft fittings, engine components, hydraulic lines, actuators, fasteners.

• Oil & Gas: Downhole instrumentation housings, valve components, chemical injection lines, umbilicals.

• Chemical Processing: Pump shafts, valve stems, fittings exposed to moderate corrosives.

• Power Generation: Turbine blades, fasteners, instrumentation tubing.

• Medical Devices: Surgical instruments, implants (requires specific biocompatibility verification), dental tools.

• Marine & Defense: Shafts, fittings, fasteners, submarine components.

• General Industrial: High-strength shafts, spindles, fasteners, hydraulic pistons/rods, bearings.

Contact Us:
For specific sizes, quantities, certifications, custom processing requests, or technical support regarding 17-4PH Stainless Steel Tubing, please contact our sales or engineering team.

Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe best-selling consumer market. Without our products among consumers enjoy a higher status, the company with a number of retailers and agents to establish a long-term stable cooperative relationship. Our distribution of stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe variety complete, reasonable price. The strength of the company, heavy credit, abide by the contract, ensure product quality, with a variety of management characteristics and the principle of small profits, to win the trust of our customers.