17-4PH Stainless Steel Round Bar
Diameter: 5mm – 300mm
Length: 1000mm – 6000mm (Custom lengths available)
Form: Round Bar, Forged Bar, Centerless Ground
Surface Finish: Black, Peeled, Turned, Polished, Centerless Ground
Condition: Solution Annealed, Precipitation Hardened (H900, H1025, H1075, H1100, H1150)
Test: UT, SGS testing, TUV etc
Quality control: MTC Test Certificate is supplied with shipment
Our 17-4PH Stainless Steel Round Bar is a martensitic precipitation-hardening stainless steel that combines high strength, excellent corrosion resistance, and good mechanical properties. This chromium-nickel-copper alloy can be heat-treated to achieve a range of strength levels, making it ideal for applications requiring both durability and resistance to corrosive environments. Our 17-4PH bars are manufactured to the highest standards, ensuring consistent performance in aerospace, medical, oil and gas, and general engineering applications.
Core Characteristics
Strength-Toughness Balance
After precipitation hardening, the steel achieves a tensile strength of 1100-1400 MPa and a hardness of 33-44 HRC, maintaining a certain degree of toughness. The strength and toughness can be adjusted through various aging processes (e.g., H900 and H1150).
Corrosion Resistance
Superior to ordinary martensitic stainless steel, it can withstand mild atmospheres, fresh water, and mildly corrosive media, but weaker than 304/316 austenitic stainless steel.
Easy Machining
17-4PH Stainless Steel Round Bar is easy to cut, forge, and weld. Post-weld heat treatment restores strength, making them suitable for precision machining.
Specifications
|
Parameter |
Details |
|
Diameter |
5mm – 300mm |
|
Length |
1000mm – 6000mm (Custom lengths available) |
|
Form |
Round Bar, Forged Bar, Centerless Ground |
|
Surface Finish |
Black, Peeled, Turned, Polished, Centerless Ground |
|
Standard |
ASTM A564, AMS 5643, UNS S17400 |
|
Condition |
Solution Annealed, Precipitation Hardened (H900, H1025, H1075, H1100, H1150) |
Chemical Composition
|
Element |
Content (%) |
|
C |
≤ 0.07 |
|
Si |
≤ 1.00 |
|
Mn |
≤ 1.00 |
|
P |
≤ 0.040 |
|
S |
≤ 0.030 |
|
Cr |
15.50 – 17.50 |
|
Ni |
3.00 – 5.00 |
|
Cu |
3.00 – 5.00 |
|
Nb+Ta |
0.15 – 0.45 |
|
Fe |
Balance |
Mechanical Properties
|
Condition |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Elongation (%) |
Hardness (HRC) |
|
H900 |
1310 |
1170 |
10 |
40-48 |
|
H1025 |
1100 |
1000 |
12 |
36-40 |
|
H1075 |
1000 |
860 |
13 |
32-36 |
|
H1100 |
930 |
760 |
14 |
30-34 |
|
H1150 |
860 |
690 |
16 |
28-32 |
Equivalent Grades
|
Standard |
Grade |
|
UNS |
S17400 |
|
AMS |
5643 |
|
EN |
1.4542 |
|
DIN |
X5CrNiCuNb16-4 |
Why Choose Baohui Steel?
Full Material Traceability
We provide 17-4PH Stainless Steel Round Bar Material Test Certification (MTC EN 10204 3.2) with complete chemical and mechanical test reports.
Stringent Quality Control
Each batch undergoes ultrasonic testing (UT), magnetic particle inspection (MPI), and dimensional verification.
Third-Party Validation
Optional SGS, TÜV, and NADCAP certification available for critical applications.
Global Client Trust
Trusted by 1,000+ clients in aerospace, medical, oil and gas, and defense sectors across the USA, Germany, UK, Japan, and India.
High Repeat Order Rate
85% customer retention rate due to consistent quality and reliable delivery performance.
Custom Processing
We provide cutting, heat treatment, machining, and surface finishing to customer specifications.
Global Project Supply Record
|
Project |
Country |
Application |
|
Aircraft Landing Gear Components |
USA |
High-strength structural parts |
|
Medical Device Manufacturing |
Germany |
Surgical instrument components |
|
Oil Field Valve Production |
UAE |
Wellhead equipment |
|
Marine Engineering Components |
Japan |
Propeller shafts and fittings |
Applications
Aerospace
Aircraft landing gear connectors, engine parts, and spacecraft structural components;
Petroleum/Energy
Oilfield drilling valve cores, high-pressure pump shafts, and reactor supports;
Machinery/Precision Equipment
Machine tool spindles, hydraulic piston rods, and wear-resistant mold cores;
Medical Devices
Surgical instruments, CT scan mounts, and orthopedic tools;
Fluid Control
High-pressure valve stems and cores.
FAQ
Q: What is the difference between 17-4PH and 15-5PH?
A: 17-4PH Stainless Steel Round Bar has higher chromium and copper content, offering better corrosion resistance in certain environments, while 15-5PH provides improved transverse toughness.
Q: Can 17-4PH be welded?
A: Yes, it has good weldability. Post-weld heat treatment is recommended to restore optimal mechanical properties and corrosion resistance.
Q: What is the maximum service temperature?
A: 17-4PH can be used continuously up to 600°F (316°C) while maintaining its mechanical properties.
Q: Do you provide bars in different heat treatment conditions?
A: Yes, we supply 17-4PH bars in solution annealed condition or various precipitation-hardened conditions (H900 to H1150).
Request a Quote – Contact Us Today!
Experience the superior quality of Baohui Steel 17-4PH Stainless Steel Round Bar-trusted by leading industries worldwide.
For a Competitive Quote, Please Provide:
Diameter and Length Requirements
Quantity
WhatsApp: 8613468954786
Email:baohui@bhsteelpipe.com
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