17-4 PH Stainless Steel Round Bar
17-4 PH round bar is quoted by UNS designation, ASTM A564 edition, ageing condition, diameter and surface route. Common inquiry range: 8–300 mm by condition, mill length or saw-cut blanks. Send the ageing condition with the RFQ.
Supply routes
- Qualified partner-mill sourcing
- Stock coordination
- In-house production or processing
Grade datasheets:17-4 PH
Where this product solves the job
- Machined shafts, stems, couplings and valve parts whose approved drawing names 17-4 PH and a specific delivery condition.
- Condition A stock intended for a documented downstream machining and aging route approved by the component manufacturer.
- Aged bar purchases where the ordered condition, property requirements, heat-treatment records and lot identity are defined together.
When we recommend another route
- Orders that state only 17-4 PH without selecting Condition A or an aged condition and the applicable acceptance basis.
- Automatic replacement of 304, 316L or duplex grades based on strength alone without reviewing corrosion, toughness and fabrication.
- Welded or re-heat-treated components without a qualified procedure and engineering control of the final material condition.
Standards we quote against
Send the product standard, edition and any dimensional or finish standard with the RFQ. We quote the ordered combination, not a generic grade name.
Ordered product standards: ASTM A564/A564M
What to send so we can quote the right route
- Name 17-4 PH, UNS S17400 or Type 630 as required, plus the governing bar standard and edition.
- State Condition A, H900, H1025, H1075, H1150 or another approved condition and identify who performs the aging operation.
- Define diameter, tolerance class, straightness gauge length, fixed or random length, cut-end allowance and quantity by size.
- Specify hot-rolled, peeled, turned or ground surface and any machining allowance, surface-removal or defect-depth requirement.
- List mechanical testing, hardness, supplementary NDE, inspection document, heat-treatment record and traceability required by the purchase.
Specifications
| Grade | 17-4 PH / UNS S17400 / 1.4542 |
|---|---|
| Product standard | ASTM A564/A564M |
| Typical diameter | Common inquiry range: 8–300 mm by condition. |
| Condition | A, H900, H1025, H1075, H1150 or project-specified |
| Surface | Hot rolled, peeled or ground |
| Length | Common inquiry range: Mill length or saw-cut blanks. |
| Documents | Inspection documents and traceability records as ordered and confirmed in the quotation. |
| Commercial basis | Quantity, MOQ, production route and delivery schedule are quoted for the ordered specification. |
Dimensions and Tolerances
| Length | Common inquiry range: Mill length or saw-cut blanks. |
|---|---|
| Outer Diameter | Common inquiry range: 8–300 mm by condition. |
| Order basis | Governing product and dimensional standard, delivery condition and any drawing-specific limits. |
| Special tolerances | Send special tolerances in the RFQ; we quote the accepted production route. |
Published ranges are technical references, not a live-stock or production-capability promise. We confirm the ordered size range, MOQ and delivery schedule in the quotation.
Edge or end condition
- Edge, end or facing condition as ordered from the product form, standard and fabrication need.
Testing and inspection
- Tests required by the purchased product standard.
- PMI, NDE, corrosion, roughness or other supplementary inspection quoted when the RFQ names method, lot scope and acceptance.
Order documents
- Heat identity with EN 10204 3.1, or the inspection document named in the RFQ, against mill, stock or partner-mill route.
- Supplementary reports linked to the ordered test plan.
Export packaging
- Bars bundled with end protection and moisture wrap for sea freight.
- Bundle identity kept with the heat mark; packing method stated in the quotation.
Quote the condition with the alloy
Send Condition A or the H condition in the first line of the RFQ. Condition A leaves aging to a later controlled operation; an H condition places aging and its verification in the supply scope. Send the component drawing, section size, environment and downstream thermal history.
Quote bar for the machining route
Send straightness, surface removal, diameter tolerance, cut allowance and piece identification with nominal diameter. We quote the matching shaft or stem route. Use the 17-4 PH grade page for designation context.
Quote heat treatment and records together
Send which mechanical or hardness results, heat-treatment records and inspection document must stay linked to the test lot. Later aging, re-aging or welding stays under the component manufacturer’s qualified procedure. We quote the named ASTM A564 edition.
Common ordering mistakes
- Treating the grade name as complete while omitting the heat-treatment condition that controls strength and toughness.
- Selecting the highest nominal strength condition without checking section size, environment, toughness and downstream processing.
- Ordering ground bar by nominal diameter but omitting tolerance, straightness, surface class and end allowance.
- Mixing Condition A and aged bars under similar bundle markings, then losing condition identity during machining distribution.
Handling and transport risks
- Mixed heat-treatment conditions can look alike, so bundle, piece and cut-length identification must follow the ordered traceability plan.
- Close-tolerance ground surfaces can be dented, fretted or corroded by wet wrapping, hard banding contact or dirty supports.
- Long slender bars may lose straightness when lifting points and rack supports do not match their diameter and length.
- Saw-cut blanks can lose heat and condition identity when tags are separated from pieces before controlled transfer marking.
Technical content updated: 2026-07-31
Published by Tsingshan (Shandong) Iron & Steel Co., Ltd..Sources, update policy and technical limitations.
Typical Applications
Related technical resources
Grades
Published standards
Applicable standards
ASTM A564/A564M
Finishes and processing
What to Include in Your RFQ
Send the known values first. We use them to quote the ordered option, inspection plan and delivery route.
- Grade and governing standard
- 17-4 PH; ASTM A564/A564M. State the exact ordered combination.
- Dimensions and tolerances
- Provide length, outer diameter and identify which order basis, special tolerances requirements govern acceptance.
- Finish, processing and edge or end condition
- ; Stainless Steel Cut-to-Length and Leveling; Edge, end or facing condition as ordered from the product form, standard and fabrication need..
- Inspection, documents and packing
- Testing: Tests required by the purchased product standard.; PMI, NDE, corrosion, roughness or other supplementary inspection quoted when the RFQ names method, lot scope and acceptance. Documents: Heat identity with EN 10204 3.1, or the inspection document named in the RFQ, against mill, stock or partner-mill route.; Supplementary reports linked to the ordered test plan. Packing: Bars bundled with end protection and moisture wrap for sea freight.; Bundle identity kept with the heat mark; packing method stated in the quotation.
- Quantity, destination and requested delivery window
- Send quantity per size, unit, destination city or port, trade term and requested delivery window so we can quote the supply and freight route.
Product RFQ Example
RFQ example: ASTM A564/A564M Type 630 round bar, UNS S17400, H1150 condition, 42 mm finished stock diameter with the stated tolerance and straightness over the specified gauge length, ground surface, fixed cut lengths with machining allowance, mechanical and hardness results for the ordered lot, requested inspection document and heat-treatment record, piece identification and export case packing; we quote the matching route and delivery window.
Prepare the product context
Define the 17-4 PH bar condition
Send the heat-treatment condition if already selected. We quote the matching bar route, diameter, surface and test package.
Frequently Asked Questions
What is the purchasing difference between Condition A and an H condition?
Condition A is solution treated and is commonly selected when a controlled downstream aging operation is planned. An H condition identifies an aged delivery state. The RFQ must name the required condition, property basis and party responsible for any later heat treatment.
Can an H900 order be changed to H1150 after machining?
Send the complete thermal history, section response, final properties and verification plan. We quote H900 or H1150 as ordered; undocumented re-aging is not a substitution route.
Which dimensions matter for 17-4 PH shaft stock besides diameter?
State diameter tolerance, straightness over a defined gauge length, surface route, defect or removal allowance, cut length and end allowance. These details determine whether bar can enter the machining route without unexpected preparation.
What records should accompany aged 17-4 PH round bar?
Specify the inspection document, heat and lot traceability, ordered mechanical or hardness results and heat-treatment record. Send the required package and the linkage between bars, test lot and records; we quote them in the order file.
Is 17-4 PH bar suitable for a welded shaft assembly?
Welding can alter the local condition and final properties. The design authority must approve the welding, heat-treatment and inspection procedure; bar supply alone does not establish that a welded assembly meets the component requirements.
Quote request
Get a Stainless Steel Quote
Send the product, grade and quantity you already have. We will complete the specification and quote the supply route.