Common 446 Stainless Steel Specifications & Heat Treatment
| Grade | 446 Stainless Steel |
|---|---|
| Common bar standards | ASTM A276 for ferritic stainless bar; UNS S44600. |
| Heat treatment / supply condition | Typically annealed; ferritic 446 is not strengthened by ordinary quench-and-temper treatment. |
| Precision finishing | Specify finished OD and limits, rod length and quantity, straightness, roughness, hardness, and required documents. |
Confirm actual high-temperature application and certified condition.
Typical standards and conditions are purchasing references only, not a stock/certification or in-house heat-treat promise. Confirm supplied product form, condition and any externally coordinated thermal treatment in the written RFQ.
HIGH-CHROMIUM FERRITIC STAINLESS • MATERIAL GRADE BUYING GUIDE
446 Stainless Steel precision ground rod stock — 446 is a high-chromium ferritic grade associated with oxidation-resistant elevated-temperature applications.
446 Stainless Steel Rod Material and Specification
For this grade, the important question is not simply whether a rod is offered as “precision ground.” Buyers should define the material identity, the intended delivery condition and the acceptance requirements. Specify the relevant UNS designation and service-specific material standard.
Condition and Processing Considerations
Confirm processing condition and whether elevated-temperature oxidation data are required.
Where 446 Stainless Steel Rod Stock May Be Considered
Heat-exposed equipment components and qualified industrial parts.
The required rod diameter and finish must be consistent with the final manufacturing process. Ground stock may be appropriate for selected machining or shaft-preparation workflows, but the final component design determines whether the grade, microstructure and surface condition are suitable.
446 Stainless Steel Centerless Ground & TG&P Bar Options
446 Stainless Steel Centerless Ground Bar
For 446 Stainless Steel centerless ground rods and bars, high-chromium ferritic 446 should be quoted by the exact specification and intended elevated-temperature service. See centerless grinding services for the OD finishing route.
446 Stainless Steel TG&P / Turned, Ground & Polished
If your RFQ calls for 446 Stainless Steel TG&P (TGP) or turned, ground and polished bar, TG&P for 446 cannot be inferred from the alloy designation; include finished condition and functional roughness. Learn about shafting and bar sourcing and surface polishing.
Centerless-ground material is not necessarily TG&P. Grade, supplied condition, turning requirements, final OD, straightness, finish and availability are confirmed by quotation. Request a quote →
What to Verify Before Ordering
High-temperature strength and fabrication characteristics must be assessed; a shiny ground surface is not proof of service life.
- Finished outside diameter: state the size and exact upper/lower OD limits, not just a nominal inch or millimeter dimension.
- Lengths and quantity: give the bar length or cut length, end requirements, number of pieces and requested shipment schedule.
- Material condition: include the specified grade, applicable product standard, heat-treatment or hardness state and certification requirements.
- Inspection: specify straightness with a measurement span, roundness, surface roughness and traceability where your application calls for them.
Supply, OD Grinding and Quote Requirements
Precision Ground Rods provides grade-specific sourcing and precision bar processing quotations. Depending on the grade, condition, diameter and length, material supply may be combined with outside-diameter grinding, straightening, polishing, cutting and packaging. These capabilities are evaluated for each RFQ; this page does not promise a standard stocked size or a universal grinder tolerance.
For a useful 446 Stainless Steel inquiry, attach the purchase specification and drawing and indicate whether you need finished ground rod stock or want customer-owned stock processed. Include the quantity, delivery destination and inspection plan so the quotation can address all relevant requirements.
Browse all rod material grades to compare other chemistries and product forms. Verify any material substitution with engineering.
General purchasing information, not a certified material test report or an approval for regulated service. All material properties, dimensions and certificates must be confirmed in the written quotation.
