Precision ground 17-4 H1100 stainless steel bar is used in Swiss machining applications requiring a combination of mechanical strength, corrosion resistance, and controlled bar dimensions.
At Mozaic Precision Metals, we supply and process 17-4 PH H1100 round bars for Swiss-type CNC machining and other precision manufacturing applications.
Our ISO 9001:2015-certified operation offers centerless grinding, bar straightening, polishing, and custom bar processing.
Why Swiss Machining Requires Precision Ground 17-4 H1100 Bars
Swiss-type CNC lathes use a guide bushing to support the workpiece near the cutting area. This arrangement makes bar diameter consistency, surface finish, and straightness especially important.
Inconsistent bar stock can create problems such as:
Excessive or inconsistent guide-bushing clearance
Bar-feeder vibration
Variable machining accuracy
Surface damage or interference at the guide bushing
Increased setup time and material waste
Precision centerless grinding helps manufacturers achieve a specified outside diameter and a consistent surface finish before the material enters the machine.
Benefits of 17-4 PH H1100 for Swiss Machining
17-4 PH is a precipitation-hardening stainless steel. Condition H1100 is produced through an aging treatment that develops mechanical properties different from the higher-hardness H900 and H1025 conditions.
Strength and Machinability
H1100 offers a combination of strength and ductility that can make it suitable for precision-machined shafts, pins, fittings, and other components.
Compared with harder 17-4 PH conditions, H1100 may permit improved cutting performance under suitable tooling and machining conditions.
Actual tool life, cutting speed, and surface finish depend on insert selection, machine rigidity, coolant, and part geometry.
Controlled Bar Dimensions
Swiss machining applications frequently require consistent round-bar dimensions to maintain proper guide-bushing fit.
Precision ground stock can help provide:
Customer-specified outside diameter tolerances
Controlled diameter variation along the bar
Consistent surface quality
Improved bar preparation for guide-bushing setups
Straightness and Bar Feeding
Straightness is important for smooth movement through a bar feeder and guide bushing.
Excessively bent material may create vibration, loading difficulties, or interruptions during production.
Mozaic Precision Metals offers bar straightening services for applications requiring specified straightness characteristics.
17-4 H1100 Bar Diameter Tolerances and Surface Finish
Mozaic Precision Metals offers precision centerless grinding for customers requiring controlled outside diameters and surface finishes.
Our grinding capabilities include tight diameter tolerances, with ±0.0001-inch OD tolerance available for suitable applications, depending on starting material, size, condition, and processing requirements.
For Swiss machining applications, customers should specify:
Nominal finished diameter
Minimum and maximum acceptable OD
Roundness requirements
Straightness requirements
Surface roughness requirements
Bar length
Guide-bushing requirements, where applicable
These specifications allow our team to evaluate the appropriate grinding and straightening process.
H1100 Compared with Other 17-4 PH Conditions
Different precipitation-hardening conditions provide different combinations of hardness, strength, and ductility.
| Condition | General Characteristics |
|---|---|
| H900 | Higher hardness and strength; more demanding cutting conditions |
| H1025 | High strength with intermediate hardness |
| H1100 | Lower hardness than H900, with a balance of strength and ductility |
| H1150 | Generally lower strength and greater ductility than H1100 |
The best condition depends on the component’s mechanical requirements and the manufacturer’s machining process.
For a detailed explanation of aging treatments and mechanical properties, visit our 17-4 Heat Treated Stainless Steel Guide.
Applications of Precision Ground 17-4 H1100 Bar
17-4 H1100 round bar can be used to manufacture a variety of precision components where the specified material condition meets the design requirements.
Typical applications include:
Swiss-machined shafts and pins
Precision valve components
Aerospace mechanical components
Industrial fittings
Automation and motion-control components
Custom CNC-turned parts
Material suitability should be confirmed against the component drawing, applicable specification, and required mechanical properties.
Whether you require Swiss-grade bar stock or tight-tolerance shafting, our team ensures dimensional stability, microfinish quality, and reliable machining performance.
Centerless Grinding and Bar Processing at Mozaic Precision Metals
Mozaic Precision Metals combines round-bar supply with value-added finishing services.
Our capabilities include:
Centerless Grinding: Finished outside diameters and surface finishes to customer specifications
Bar Straightening: Straightness correction and preparation for subsequent machining
Polishing: Surface finishing to specified roughness requirements
Saw Cutting: Custom bar lengths
Bar Packaging: Preparation and protection of processed bar stock for shipment
Our team reviews the material condition, starting diameter, finished dimensions, and required processing before quoting.
For customers requiring specification-controlled 17-4 PH material, we can also review the applicable purchasing and documentation requirements.
Learn more about our centerless grinding services and AMS 5643 steel round bar.
Request a Quote for Precision Ground 17-4 H1100 Bar
Mozaic Precision Metals supplies and processes 17-4 PH H1100 stainless steel round bars for manufacturers requiring controlled dimensions, consistent surface finishes, and precision bar preparation.
For an accurate quotation, please provide your required material specification, heat-treatment condition, finished diameter, tolerance, length, quantity, and delivery requirements.