Send diameter, tolerance, cut length and piece count.
Global Steel Supply & Processing
UNS S17400 · Type 630 · ASTM A564/A564M-25
Source 17-4PH stainless steel bar for shafts, valve components, high-strength fasteners and precision equipment. Share your diameter, length, aging condition, quantity and destination for a factory quotation.
Compare heat-treatment conditions ↓
Specify Type 630 with the ASTM edition, exact heat-treatment condition and finished bar dimensions for a consistent purchasing comparison.
| Grade | 17-4PH / Type 630 / UNS S17400 |
| European designation | 1.4542 / X5CrNiCuNb16-4 |
| Bar standard | ASTM A564/A564M-25 |
| Other bar specifications | EN 10088-3 or AMS 5643 when specified by your purchase order |
| Available bar forms by enquiry | Solid round, square, hexagonal and flat bar |
| Product finish | Hot-finished, cold-finished, ground or polished, subject to order confirmation |
| Supply condition | Solution-treated Condition A or the agreed precipitation-aged condition |
| Bar dimensions | Diameter / across-flats × length × ordered piece count |
| Quality documents | Chemistry, mechanical testing, heat treatment and MTC as agreed |
| Quotation details | Size, condition, quantity, destination and required inspection scope |
Send diameter, tolerance, cut length and piece count.
Specify Condition A, H900, H1025, H1150 or your approved alternative.
Include hardness, tensile and heat-treatment documentation requirements.
Choose the bar finish and cross-section that suit your machining route and the required heat-treatment state.
Solid bars supplied by diameter and length for precision machining and aging.
Surface and dimensional requirements arranged for your precision parts.
Confirm bar tolerance, cut ends and straightness in your RFQ.
Chromium, nickel, copper and niobium are central to the grade specification. Include your inspection certificate requirements with the bar order.
| Element | ASTM Type 630 Reference, wt.% |
|---|---|
| Chromium (Cr) | 15.00–17.50% |
| Nickel (Ni) | 3.00–5.00% |
| Copper (Cu) | 3.00–5.00% |
| Niobium + Tantalum (Nb+Ta) | 0.15–0.45% |
| Carbon (C) | ≤0.07% |
| Manganese (Mn) | ≤1.00% |
| Silicon (Si) | ≤1.00% |
| Phosphorus (P) | ≤0.040% |
| Sulfur (S) | ≤0.030% |
| Iron (Fe) | Balance |
Copper-containing precipitates strengthen the martensitic structure during the specified aging cycle. The selected heat treatment establishes the tensile and yield properties used for your component.
Magnetic stainless steel, with mechanical performance determined by the heat-treated condition.
Specify certificate and test-report requirements with the RFQ.
H900, H1025 and H1150 deliver different strength and ductility combinations. Order the condition named in your component specification.
| Condition | Minimum Tensile | Minimum 0.2% Yield | Elongation, Min. |
|---|---|---|---|
| H900 | 1310 MPa | 1170 MPa | 10% |
| H1025 | 1070 MPa | 1000 MPa | 12% |
| H1150 | 930 MPa | 725 MPa | 16% |
Heat-treatment availability and final properties are confirmed for the ordered size and test orientation.
Send the exact condition, diameter, finish and MTC specification with your quantity.
Compare the material families by your mechanical strength target, corrosion exposure and delivery condition.
Precipitation-hardening stainless steel for high-strength shafts, fasteners and precision mechanical components. Strength is selected through an aging condition.
Choose austenitic stainless bars when the application specification prioritizes their corrosion behaviour and fabrication properties.
Give your sourcing team a clear path from material specification to supply confirmation, inspection and export coordination.
Our manufacturing operations produce 8 million metric tons of steel annually across the company’s product portfolio.
Manufacturing ↗Company-wide steel stock supports purchasing plans. Confirm the specific 17-4PH grade, dimensions and aged condition by RFQ.
Steel Inventory ↗Provide Type 630, bar size, heat-treatment state and required MTC to receive an order-focused quote.
Quality Control ↗Specify your length list, cargo quantity, destination port and required documents for shipment planning.
Contact Sales ↗Specify 17-4PH when your engineering design calls for precipitation-hardening stainless bar with a defined strength condition and corrosion performance.
Solid bar stock for turned valve stems, shafts and actuator parts.
Machined shaft and coupling blanks for industrial pump equipment.
Bar for fastening components built to their specified strength and condition.
Turned collars, couplings and components made from bar stock.
Machined hardware supplied to the exact aerospace material requirements.
Mechanical parts for process and industrial equipment where specified.
Send each part’s diameter, quantity, heat-treatment condition and finished size.
Estimate solid round-bar mass using the nominal Condition A density and your required diameter, cut length and pieces.
Nominal density: 7,750 kg/m³ for Condition A. Aged material density can vary slightly; commercial shipment weights follow the confirmed order.
Share all required diameters and lengths, along with material condition and delivery requirements, to receive a structured quotation.
BAOSTEEL METAL’s manufacturing business covers multiple steel categories. Discuss your 17-4PH bar purchases against the requested specification, material condition and batch documentation.
Our regular inventory represents approximately 1 million metric tons across the company’s steel products. Share your Type 630 bar sizes and heat-treatment condition for current stock and production availability.
For your high-strength components, request the documentation that confirms the ordered chemistry, age-hardening condition and mechanical performance.
Add your drawing, requested finished dimensions and machining allowance to your bar order. Processing feasibility and tolerance will be confirmed according to material condition and diameter.
Provide your required bar lengths, surface protection and destination port so shipping arrangements can reflect the shape, finish and handling requirements of your order.
Choose bar grades by the material properties and manufacturing standard required for your application.
ASTM A564/A564M covers Type 630 / UNS S17400 age-hardening stainless steel bars and shapes. Include the required edition and condition in your RFQ.
Condition A is solution-treated stock suitable for subsequent machining and aging. H900 is a high-strength aged condition with reference strength requirements linked to the material size and testing direction.
Choose the condition in your approved part specification. H1025 provides an intermediate strength level, while H1150 provides greater reference elongation relative to H900.
Send grade, aging condition, bar diameter, length, quantity, finished tolerance, required certificates and destination port.
Send your required grade, dimensions, quantity and destination. Our team will review the inquiry.