17-4 PH round bar
ASTM A564
17-4 PH round bar supplies aging-controlled strength and hardness to machined shafts, retainers and fastening parts. Diameter allowance and delivery condition determine the route from stock to the final loaded section.
- MOQ
- 100 kg
- Samples · typical
- ~20 days
- Production · typical
- 25–35 days
- Heat treatment
- Solution treated (Condition A) / Age hardened H900 / Age hardened H1025 / Age hardened H1150
EN 10204 3.1 MTC + heat-number traceability
Which standard is on your order?
Raw Material Specifications
Heat Treatment
Solution treated, then aged to the specified H conditionCondition A is the solution-treated starting state; aging to H900, H1025 or H1150 sets the final strength–toughness balance.
What we can make in 17-4 PH
Full-length bar
Use for repeated turning of shafts, studs and valve components from one heat-traceable stock length. Bar diameter must include machining allowance for the finished surface and straightness.
Cut blank
Use saw-cut blanks for short-run machining or forging starts. Cutting allowance and end squareness affect how much usable length remains after facing.
- Section
- Solid round
- Size
- Diameter × length
- Surface
- Turned · Ground · Drawn
- Supply form
- Bars · Cut pieces
- Final condition
- Solution treated (Condition A) · Age hardened H900 · Age hardened H1025 · Age hardened H1150
- Inspection
- Cross-section · Surface · Delivery condition · Heat identity
Supply & preparation
Cut lengths preserve the heat identity of the original bar. Turning or grinding allowance follows the required finished diameter.
Material condition
Solution treatment and the specified aging condition are recorded against the production lot; final dimensions are checked after thermal processing.
Finished geometry
Diameter, straightness, surface condition and cut length are checked against the stock order.
Where 17-4 PH fits — and what matters
Industrial Machinery & Automation
Drive shafts, collars and guide pins17-4 PH round bar provides machining stock for drive shafts, collars and guide pins, including turned shoulders, bearing seats and threaded ends. Bar diameter includes the allowance for finishing the final part. Alignment, operating cycles and replacement access define the working interface.
Automotive & EV Manufacturing Equipment
Fixture pins and positioning shafts17-4 PH round bar provides machining stock for fixture pins and positioning shafts, including turned shoulders, bearing seats and threaded ends. Bar diameter includes the allowance for finishing the final part. Repeated tooling changes require consistent seating and repeatable assembly dimensions.
Pumps, Valves & OEM
Valve stems and pump-drive collars17-4 PH round bar provides machining stock for valve stems and pump-drive collars, including turned shoulders, bearing seats and threaded ends. Bar diameter includes the allowance for finishing the final part. Repeated maintenance makes fit, engagement and access part of the component specification.
Same round bar. Different material priorities.
17-4 PH material data316L
Molybdenum-bearing stainless performance in wet equipment.
- Connection priority
- The mechanical requirement of the machined section
- Washdown and retained cleaner
- Cleaner concentration, rinse quality and deposits determine the exposure in covered joints. The low-carbon designation does not independently establish a fastener strength class. Include liquid retained at the machined diameter and cut surfaces of the future part in the exposure description.
Inconel 625
Solid-solution strength and resistance to aggressive process liquids.
- Connection priority
- The mechanical requirement of the machined section
- Annealed or solution-annealed 625
- The delivery condition affects strength and high-temperature response. Keep the specified condition with the component’s mechanical acceptance; 718-style aging is not the strengthening route for 625. Include liquid retained at the machined diameter and cut surfaces of the future part in the exposure description.
Duplex 2205
Duplex strength and chloride-corrosion resistance.
- Connection priority
- The mechanical requirement of the machined section
- S31803 or S32205
- The specified UNS fixes the chemistry. Solution treatment, section size and the ordered mechanical or corrosion tests establish the final duplex condition. Include liquid retained at the machined diameter and cut surfaces of the future part in the exposure description.
From drawing to documented delivery
- 01Drawing & BOMForm, dimensions and quantity
- 02Material & formingGrade, heat and manufacturing route
- 03Final inspectionGeometry, threads and ordered tests
- 04Documents & dispatchLot records and identified packing
Order documents
- Material identity
- UNS S17400 · heat number · ordered condition
- Stock acceptance
- Lot-linked aging record and mechanical acceptance in the final condition.
- Dimensional record
- Cross-section · Surface · Delivery condition · Heat identity
- Traceability
- EN 10204 3.1 material certificate · production lot · identified packing
Build your 17-4 PH round bar enquiry
Questions about 17-4 PH round bar
Is the bar condition the same as the finished-part condition?
Not necessarily. A solution-treated or annealed blank may be selected for machining before a specified final treatment. Stock and finished-part mechanical records need to identify the conditions they represent.