| 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 proudly supplied the highest quality products worldwide for many years. We stand firm in our belief that Daxun Alloys is the premier supplier for SS 431 Round Bars/Rods. We export top-notch round bars adhering to both national and international quality standards, offering them in a variety of specifications to our global clientele. Type 431 is a hardenable martensitic stainless steel alloy, celebrated for its exceptional tensile and torsional strength, making it an ideal material for manufacturing robust shafts.
For more information on our stainless steel rods, please contact Daxun.
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 forming capabilities include cutting-edge radial forging machines, advanced heat treatment furnaces, sophisticated melting furnaces, and state-of-the-art rolling mills for manufacturing titanium rods. Additionally, our unique hydroforming process excels in manufacturing intricate parts.
Our stainless steel rod heat treatment employs advanced furnace equipment to ensure the material's stability and superior performance.
Daxun Stainless Steel utilizes the world's most advanced vacuum induction, vacuum consumable, and electroslag furnaces. These technologies minimize impurities during the smelting process, significantly enhancing the performance of our finished stainless steel rods.
Our stainless steel products come with complete certifications and traceability. We are committed to delivering the highest quality stainless steel to prestigious sectors including aerospace, industrial, medical, marine, and military industries.
| 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 across a variety of corrosive environments. While it offers moderate resistance to saltwater in cold southern waters, its performance in warm tropical waters is limited. Overall, its corrosion resistance is comparable to or slightly less than that of 304 Grade Material. For optimal performance, ensure a smooth surface finish in the hardened and tempered state.
The 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 tempering temperature due to a reduction in mechanical properties.
Full annealing is impractical for this grade as it hardens even with slow cooling. For Process Annealing, heat to 620-660°C and allow it to air cool.
To harden, heat the material to 980-1065°C, hold for about 30 minutes, then quench in air or oil. Pre-heating at 760-790°C can be beneficial for complex components or those already hardened. Temper the material to meet mechanical requirements, using the indicated temperatures in the provided table.
Avoid tempering within the 425-600°C range as it leads to reduced impact toughness, though the effect is less pronounced compared to other martensitic grades.
Welding is challenging due to the risk of cracking. Pre-heat the material to 200-300°C before welding. While Grade 410 filler rod is suitable, Grades 308L, 309, or 310 offer more ductile welds if matching properties are not required. Post-weld heat treatment at 650°C is advisable.
In its annealed condition, this grade is relatively easy to machine. However, once hardened above 30 HRC, machining becomes more difficult. The Ugima Improved Machinability version of Grade 431 offers a significant enhancement in machining speeds and tool longevity.
Common applications include nuts and bolts, propeller shafting, pump shafts, beater bars, and marine hardware.
The specified properties are for bar products as per ASTM A276. Similar properties may apply to other products like plates and forgings as outlined in their respective specifications.
Stainless steel round bars are immensely versatile, finding applications in fields ranging from construction to automotive manufacturing. Jiangsu Daxun Alloy Co., Ltd. offers these round bars in various grades and sizes. With our state-of-the-art cutting service, we ensure precise customization to meet your specific needs every time.
Can you produce SS grinding bars & rods?
Yes, we specialize in SS grinding bars & rods with precise dimensions, exceptional roundness, and straightness. These surpass the qualities of standard polished bars, though they come at a higher processing cost.
Q1: What products can you offer?
A: We offer a range of general steel types including 310S, 316L, 304, 304L, 201, 904L, 316H, 316, and 316L 300 series.
Additionally, we provide 400 series stainless steels and duplex stainless steel such as 2205, 2304, 2101, 2507, as well as high-nickel alloys like 904L, 800H, and 600H.
Q2. Can you produce products according to my drawings?
Absolutely, we can manufacture products based on your drawings to ensure they meet your exact specifications and satisfaction.
Q3. How does your factory manage quality control?
Quality is our top priority. We emphasize stringent quality control from the initial stages to the final product.
Q4. Can I request changes in packaging and transportation?
Yes, we can accommodate packaging and transportation changes per your request.
However, you will need to cover any additional costs and differences incurred during this period.
Q5. How does your factory manage quality control?
Quality is our top priority. We emphasize stringent quality control from the initial stages to the final product.
Q6. How long is the delivery time?
A: Delivery is typically 7 to 20 working days after payment confirmation.
For urgent orders, we can expedite processing to meet earlier deadlines.
Q7. What are your payment options?
A: 100% T/T in advance, Western Union (for small orders)
B: 30% T/T upfront and 70% balance before shipment
C: 100% Irrevocable LC at sight (for large orders)
Q8: Can you provide DDQ (Deep Drawing Quality) materials?
A: Yes, we supply DDQ materials suitable for stainless steel pots, sinks, bowls, etc. Provide your usage requirements and we'll adjust mechanical properties accordingly.
Q9: How can I get a sample?
A: FREE samples are available for your inspection and testing. For small pieces, we may cover courier costs depending on the circumstances.
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, among others.
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