Global Leader in Stainless Rod and Round Bar Fabrication Services

Daxun Alloys has been a beacon of excellence in supplying top-quality products worldwide for many years. Renowned as the premier supplier of SS 431 Round Bars/Rods, we offer a diverse range, ensuring alignment with both national and international quality benchmarks. Type 431, a hardenable martensitic stainless steel alloy, boasts exceptional tensile and torsional strength, making it the material of choice for manufacturing robust shafts.

For additional information on our stainless steel rods, please contact Daxun.

431 Stainless Steel Rod Chemical Composition

Our stainless steel products at Jiangsu Daxun Alloy Co., Ltd. boast full certification and complete traceability, ensuring unparalleled quality. We proudly supply top-tier stainless steel to a diverse array of leading industries, including aerospace, industrial manufacturing, medical fields, marine applications, and military operations.

• Corrosion Resistance

  The 431 Stainless Steel Bar Material stands out with its exceptional resistance to a broad spectrum of corrosive environments. While it offers some protection against saltwater in colder southern waters, its performance in warm tropical waters is limited. Overall, the corrosion resistance of 431 Round Bar Material is comparable to, if not slightly less than, that of 304 Grade Material. Optimal performance is achieved with a smooth surface in its hardened and tempered state.

  Heat Resistance

  This material resists scaling in intermittent service up to 925°C and in continuous service up to 870°C. However, it is generally not recommended for use at temperatures exceeding the relevant tempering temperature due to a reduction in mechanical properties.

  Heat Treatment

  Annealing

  Full annealing is impractical for this grade as it hardens even when cooled slowly. For process annealing, heat the material to 620-660°C and then allow it to air cool.

  Hardening

  This grade is hardened by heating to 980-1065°C, holding for approximately 30 minutes, then quenching in air or oil. Pre-heating at 760-790°C may be beneficial for complex parts or those already hardened. Tempering should be done to meet mechanical requirements, within the temperature ranges detailed in the accompanying table.

  Avoid tempering in the 425-600°C range due to reduced impact toughness, though the effect is less pronounced than in most other martensitic grades.

  Welding

  Welding can be challenging due to the risk of cracking. A pre-heat of 200-300°C is recommended before welding. Grade 410 filler rod can be used, but Grades 308L, 309, or 310 will produce more ductile welds, provided matching properties are not required. Post-weld heat treatment at 650°C is advised.

  Machining

  In its annealed state, this grade is relatively easy to machine. However, machining becomes more challenging if it is hardened to above 30 HRC. Ugima Improved Machinability versions of Grade 431 provide significant improvements in machining speeds and tool life.

  Typical Applications

  Ideal for use in nuts and bolts, propeller shafting, pump shafts, beater bars, and marine hardware.

  Specified Properties

  These properties are specified for bar products in ASTM A276. Similar but not identical properties are specified for other products, such as plates and forgings, in their respective specifications.

  SS 431 grade stainless steel round bars

  Stainless steel round bars are indispensable across various sectors from construction to automotive parts. Recognizing this diverse application, Jiangsu Daxun Alloy Co., Ltd. offers a broad array of stainless steel round bars available in multiple grades and sizes. With our complimentary advanced cutting service, we ensure precise adherence to your specifications every time.

Can you provide SS grinding bars & rods?

Yes, we can supply SS grinding bars & rods with precise dimensions, roundness, and straightness, surpassing the quality of standard stainless steel polished bars. Please note that the processing cost is higher.

Q1: What products can you offer?

A: We offer a wide range of general steel types including 310S, 316L, 304, 304L, 201, 904L, 316H, 316, and 316L 300.
Additionally, we provide 400 series and duplex stainless steels like 2205, 2304, 2101, 2507, and high-nickel alloys such as 904L, 800H, and 600H.

Q2: Can you produce products based on my drawings?

Yes, we can manufacture products according to your provided drawings to ensure maximum satisfaction.

Q3: How does your factory handle quality control?

Quality is our top priority. We maintain strict quality control measures throughout the entire production process.

Q4: Can I request a change in packaging and transportation form?

Yes, we can modify the packaging and transportation form as per your request.
However, you will need to cover any additional costs incurred during this period, including the differences in charges.

Q5: How does your factory manage quality control?

Quality is paramount. We enforce stringent quality control from start to finish.

Q6: What is the delivery time?

A: The delivery time is 7-20 working days after payment confirmation.
For urgent orders, we can expedite the process to meet your timeline.

Q7: What are your payment terms?

A: 100% T/T in advance, Western Union (for small orders).

B: 30% T/T upfront and the remaining 70% before shipment.

C: 100% Irrevocable LC at sight (for large orders).

Q8: Can you produce DDQ (Deep Drawing Quality) materials?

A: Yes, we can. Our materials are suitable for stainless steel pots, sinks, bowls, etc. Inform us of your requirements, and we will adjust the mechanical properties accordingly.

Q9: How can I get a sample?

A: We offer FREE samples for checking and testing. For small pieces, we can cover the courier cost, depending on the situation.

Q10: Which countries have you exported to?

A: We have exported stainless steel materials to Vietnam, Thailand, Turkey, Russia, Morocco, Korea, India, Pakistan, UAE, Ukraine, and other countries.