17-4 PH Stainless Steel Round Bar

17-4 PH Stainless Steel Round Bar Supply and Processing

17-4 PH stainless steel, also identified as UNS S17400 and Type 630, is a precipitation-hardening stainless steel selected for components requiring strength, corrosion resistance, and dimensional consistency.

Mozaic Precision Metals supplies and processes 17-4 PH round bars for manufacturers requiring precision ground stock, straightened bars, and custom material preparation.

The appropriate material specification, heat-treatment condition, dimensions, and required certifications are established from the customer’s purchase requirements.

Precision Ground 17-4 PH Bar Stock

Centerless grinding is an important finishing process for round bars used in precision machining and rotating equipment.

Depending on starting material and finished requirements, precision grinding can improve outside-diameter consistency, roundness, and surface finish.

Outside Diameter Tolerances

Mozaic Precision Metals offers precision centerless grinding with outside-diameter tolerances as tight as ±0.0001 inch for suitable applications.

Achievable tolerances depend on the bar diameter, length, starting condition, material properties, and processing requirements.

Customers should identify the required minimum and maximum diameter rather than relying on a general tolerance designation.

Surface Finish Requirements

Surface finish can influence component performance, machining behavior, assembly fit, and product appearance.

Our grinding and polishing operations support customer-specified surface roughness requirements.

Available finishing processes are reviewed according to the material condition, desired finish, and intended application.

Straightness and Dimensional Consistency

Straightness is particularly important for long bars used in shafting applications, rotating machinery, and bar-fed manufacturing equipment.

Mozaic offers bar straightening and inspection services to help customers meet their specified requirements.

Outside diameter, roundness, surface roughness, and straightness are separate characteristics and should be defined individually when requesting a quotation.

17-4 PH Pump Shaft and Precision Shafting Applications

17-4 PH round bar is used for selected pump shafts, valve stems, and industrial shafting applications where the design requires a combination of corrosion resistance and mechanical strength.

For shafting applications, manufacturers may require:

• Controlled outside diameter along the bar length
• Defined roundness and straightness requirements
• Specified surface roughness
• Consistent material condition
• Traceable material documentation
• Custom bar lengths for machining or assembly

Pump Shaft Quality Requirements

Pump shaft quality is application-dependent rather than a guarantee established by the steel grade alone.

When requesting 17-4 PH bar for pump shafts or other rotating components, customers should provide their required diameter tolerance, straightness, finish, length, and inspection criteria.

Our team can review these requirements to determine the appropriate grinding, straightening, and finishing operations.

Material Grades, Conditions, and Purchasing Specifications

17-4 PH stainless steel may be purchased under different material specifications and heat-treatment conditions.

Common material identifiers include:

Not every material supply automatically conforms to every specification. Customers should identify the exact standard, revision, condition, and documentation requirements on their purchase order.

For information on aerospace purchasing requirements, visit our AMS 5643 Steel Round Bar page.

For a detailed explanation of precipitation-hardening conditions, visit our 17-4 Heat Treated Stainless Steel Guide.

17-4 PH Round Bar Processing Capabilities

Mozaic Precision Metals offers several processing services to prepare 17-4 PH stainless steel round bar for manufacturing applications.

Centerless Grinding

Our centerless grinding services provide controlled outside diameters and specified surface finishes for round-bar applications.

Metal Straightening

Our bar straightening services help address straightness requirements for shafts and other precision components.

Polishing and Surface Finishing

Polishing and grinding can prepare surfaces for subsequent machining, assembly, or specialized finishing processes.

Custom Saw Cutting

Bars can be cut to requested lengths for material preparation and production requirements.

Bar Packaging and Shipping

Processed bars can be packaged according to their length, weight, surface protection needs, and shipment requirements.

Our team evaluates the starting material, required processing, finished dimensions, and quantity before quotation.

Why Source 17-4 PH Round Bar from Mozaic?

Mozaic Precision Metals supports manufacturers needing both material supply and value-added bar processing.

Our capabilities include:

• ISO 9001:2015-certified quality management
• Precision centerless grinding
• Custom outside-diameter requirements
• Bar straightening and surface finishing
• Saw cutting and length preparation
• Material sourcing and order-specific documentation
• Custom packaging and shipping

We review material and finishing requirements to determine a suitable processing plan for each order.

Request a Quote for 17-4 PH Stainless Steel Round Bar

Looking for a 17-4 PH stainless steel round bar supplier with precision grinding and straightening capabilities?

Mozaic Precision Metals works with manufacturers requiring controlled bar dimensions, consistent surface quality, and dependable material preparation.

For an accurate quotation, please provide:

• Material grade and applicable specification
• Required heat-treatment condition
• Starting and finished outside diameter
• Diameter tolerance and roundness requirements
• Straightness and surface roughness requirements
• Bar length and quantity
• Material documentation requirements
• Requested delivery date

Request a Quote from Mozaic Precision Metals