| Customization: | Available |
|---|---|
| Type: | Stainless Steel Bars |
| Standard: | ASTM, AISI, GB, JIS, DIN, EN |
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| Product Parameters: Stainless Steel rod | |
| Material | 431 |
| Specifications | ASTM A276, ASME SA276 / ASTM A479 ASME SA479 |
| Dimensions | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Round Bars | Outside Diameter in the range of 4mm to 500mm |
| Bright Bars | Outside Diameter in the range of 4mm to 100mm |
| Hex Bars | 18mm - 57mm (11/16″ to 2-3/4″) |
| Finish | Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
| Length | 1 to 6 Meters, Custom Cut Lengths |
| Form | Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc. |
| Marking & Traceability | Each Stainless Steel rod is traceable to its producing mill and heat by an identification number etched within 24″ (610mm) of one end. |
| Test Certificate | Manufacturer Test Certificate according to EN 10204 3.1 B |
| Laboratory Test Certificate from Govt. Approved Lab. | |
| Under Third Party Inspection | |
| Testing & Inspection | Visual inspection • Surface roughness measurement • Helium-leak testing • Scanning Electron Microscopy (SEM) • Auger Electron Microscopy (AES) • Election Spectroscopy for Chemical Analysis (ESCA or XPS) • Particle testing • Moisture testing |
Daxun Alloys has been the pinnacle of quality in stainless steel products for many years, earning a reputation as the premier supplier of SS 431 Round Bars/Rods worldwide. Our dedication to excellence ensures we deliver products that meet both national and international standards. We offer a diverse range of round bars and rods, tailored to meet various specifications. Type 431 is a hardenable martensitic stainless steel alloy, celebrated for its high tensile and torsional strength, making it the material of choice for manufacturing durable shafts.
Contact Daxun for Further Information on Stainless Steel Rods
431 Stainless Steel Rod Chemical Composition
| SS UNS S43100 Round Bar Chemical Composition | ||
| 431 | Max | Min |
| C | 0.2 | - |
| Cr | 17 | 15 |
| Fe | Balance | - |
| Mn | 1 | - |
| Ni | 2.5 | 1.25 |
| P | 0.04 | - |
| S | 0.03 | - |
| Si | 1 | - |
| Tempering Temperature (°C) | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) | Elongation (% in 50mm) | Hardness Brinell (HB) | Impact Charpy V (J) |
| Annealed * | 862 | 655 | 20 | 285 max | - |
| 204 | 1345 | 1055 | 20 | 388 | 50 |
| 316 | 1295 | 1035 | 19 | 375 | 53 |
| 427 | 1350 | 1080 | 19 | 388 | # |
| 538 | 1140 | 965 | 19 | 321 | # |
| 593 | 1015 | 770 | 20 | 293 | 64 |
| 650 | 960 | 695 | 20 | 277 | 84 |
Our state-of-the-art forming capabilities include radial forging machines, heat treatment furnaces, melting furnaces, and rolling mills for titanium rod manufacturing. Additionally, we employ a unique hydroforming process for part production.
Our advanced heat treatment furnace technology ensures the stability and high performance of stainless steel rods, delivering superior material quality.
Daxun Stainless Steel leverages the world's most advanced vacuum induction furnace, vacuum consumable furnace, and electroslag furnace technologies to minimize impurities and enhance the performance of our stainless steel rods during the smelting process.
Our stainless steel products boast full certification and traceability, ensuring the utmost quality. We are proud suppliers to top-tier industries such as aerospace, industrial, medical, marine, and military sectors.
| Tensile Strength | Yield Strength | |||||||||||
| Alloy | UNS Designation | Spec. | psi | MPa | ksi | psi | MPa | ksi | Elongation in 2 inches (min.) % | Grain Size Req. | Max. Hardness | Modulus of Elasticity (x106 psi) |
| 304 | S30400 | A249, A312 | 75,000 | 515 | 75 | 30,000 | 205 | 30 | 35 | - | 90 Rb | 28 |
| 304L | S30403 | A270 A312 | 70,000 | 485 | 70 | 25,000 | 170 | 25 | 35 | - | 90 Rb | 28 |
| 304LN | S30453 | A249, A688 | 75,000 | 515 | 75 | 30,000 | 205 | 30 | 35 | - | 90 Rb | 28 |
| 304H | A30409 | A249, A312 | 75,000 | 515 | 75 | 30,000 | 205 | 30 | 35 | 7 or coarser | 90 Rb | 28 |
| The Mechanical Properties of grade 316L Stainless Steel are displayed in the following table. | |||||
| Grade | Tensile Str | Yield Str | Elong | Hardness | |
| (MPa) min | 0.2% Proof | (% in 50mm) min | |||
| (MPa) min | Rockwell B (HR B) max | Brinell (HB) max | |||
| 316 | 515 | 205 | 40 | 95 | 217 |
| 316L | 485 | 170 | 40 | 95 | 217 |
| 316H | 515 | 205 | 40 | 95 | 217 |
| Tensile Strength | Yield Strength | ||||||||
| Alloy | UNS Designation | Spec. | psi | MPa | ksi | psi | MPa | ksi | Elongation in 2 inches (min.) % |
| 321 | S32100 | - | 75,000 | 515 | - | 30,000 | 205 | - | 35 |
| 321H | S32109 | - | 75,000 | 515 | - | 30,000 | 205 | - | 35 |
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 310S | 7.9 g/cm3 | 1402 °C (2555 °F) | Psi - 75000 , MPa - 515 | Psi - 30000 , MPa - 205 | 40% |
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness | |
| (MPa) min | 0.2% Proof | (% in 50mm) min | |||
| (MPa) min | Rockwell C (HR C) | Brinell (HB) | |||
| UNS S31803 / 2205 | 621 | 448 | 25 | 31 max | 293 max |
| UNS S32205 / 2205 | 621 | 448 | 25 | 31 max | 293 max |
| Grade | Property | Value |
| 2507/ S32750 |
Density (g/cm3) | 7.8 |
| 0.2% Offset Yield Strength | 80 ksi | |
| Ultimate Tensile Strength | 116 ksi | |
| 0.1% Offset Yield Strength 0.2% | 91 ksi | |
| Elongation in 2 inches, % | 15% | |
| Hardness Rockwell C | 32 | |
| Impact Energy | 74 ft.-lbs | |
| Density | 0.28 lb per inch3 | |
| Modulus of elasticity | 28 x 10(6) psi | |
| Coefficient of thermal expansion | 7.2 x 10(-6) per of at 68 to 212 of | |
| Thermal conductivity | 8.7 Btu/hr ftoF | |
| Heat capacity | 0.12 Btu/ lb oF | |
| Electrical resistivity | 31.5 x10(-6) ohm-inch |
The 431 Stainless Steel Bar Material exhibits outstanding corrosion resistance against an extensive array of corrosive environments. While it demonstrates some resistance to saltwater in cold southern waters, its effectiveness diminishes in warmer tropical waters. Generally, the corrosion resistance of the 431 Round Bar Material is on par with, or slightly less than, that of the 304 Grade Material. Optimal performance is achieved when the surface is smooth and the material is in a hardened and tempered state.
This material withstands 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 decrease in mechanical properties.
A full anneal is impractical for this grade as it hardens even with slow cooling. For process annealing, heat to 620-660°C and allow to air cool.
Hardening is achieved by heating to 980-1065°C, holding for approximately 30 minutes, then quenching in air or oil. Pre-heating at 760-790°C is beneficial for complex parts or those already hardened. Tempering should be adjusted to meet mechanical requirements, following the temperatures indicated in the accompanying table.
Avoid the tempering range of 425-600°C due to decreased impact toughness, although this effect is less pronounced in 431 than in most other martensitic grades.
Welding this material is challenging due to the potential for cracking. Pre-heating at 200-300°C is advised before welding. Although a Grade 410 filler rod can be used, Grades 308L, 309, or 310 will yield more ductile welds, provided matching properties are not essential. Post-weld heat treatment at 650°C is recommended.
In its annealed state, this grade is relatively easy to machine. However, once hardened to above 30HRC, machining becomes more complex. The Ugima Improved Machinability version of Grade 431 significantly enhances achievable machining speeds and tool life.
Nuts and bolts, Propeller shafting, Pump shafts, Beater bars, Marine hardware.
These properties are specified for bar products under ASTM A276. Similar, though not necessarily identical, properties are specified for other products such as plate and forgings in their respective specifications.
Stainless steel round bars have extensive applications, ranging from construction to automotive parts. Given this wide range of uses, Daxun Alloys provides stainless steel round bars in various grades and sizes. With our complimentary advanced cutting service, we ensure precise fulfillment of your requirements every time.
Can you produce stainless steel grinding bars and rods?
Absolutely! We specialize in producing stainless steel grinding bars and rods with precise dimensions, exceptional roundness, and straightness. Our grinding bars surpass polished bars in quality, though they do come with a higher processing cost.
Q1: What products can you offer?
A: We can provide a wide array of general steel types, including 310S, 316L, 304, 304L, 201, 904L, 316H, 316, and 316L.
Additionally, we offer 400 series steels, duplex stainless steels like 2205, 2304, 2101, 2507, and high-nickel alloys such as 904L, 800H, and 600H.
Q2. Can you produce the products according to my own drawings?
Yes, we can manufacture products as per your drawings, ensuring they meet your complete satisfaction.
Q3. How does your factory manage quality control?
Quality is our top priority. We consistently emphasize stringent quality control measures from start to finish.
Q4. Can I request changes to the packaging and transportation methods?
Yes, we can customize the packaging and transportation according to your specifications.
However, you would need to cover any additional costs incurred during this process.
Q5. How does your factory manage quality control?
Quality is our top priority. We consistently emphasize stringent quality control measures from start to finish.
Q6. What is the estimated delivery time?
A: Typically, 7 to 20 working days after payment confirmation.
For urgent orders, we can expedite the process to meet your needs.
Q7. What are your payment options?
A: 100% T/T in advance, or Western Union for smaller orders.
B: 30% T/T upfront and the remaining 70% before shipment.
C: 100% Irrevocable LC at sight for larger orders.
Q8: Can you produce Deep Drawing Quality (DDQ) materials?
A: Yes, we can. Our materials are ideal for manufacturing stainless steel pots, sinks, bowls, and more. Inform us of your specific requirements, and we will tailor the mechanical properties accordingly.
Q9: How can I obtain a sample?
A: We offer FREE samples for your inspection and testing. For small sample pieces, we may cover the courier cost, depending on the circumstances.
Q10: Which countries have you exported to?
A: To date, we have exported stainless steel materials to Vietnam, Thailand, Turkey, Russia, Morocco, Korea, India, Pakistan, UAE, Ukraine, and several other countries.
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