| 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 a beacon of quality in stainless steel products for many years. Our commitment to excellence ensures that Daxun Alloys remains the premier supplier of SS 431 Round Bars/Rods. We export top-tier round bars adhering to both national and international quality standards, offering various specifications to meet diverse needs. Type 431 is a hardenable martensitic stainless steel alloy known for its impressive tensile and torsional strength, making it perfect for shaft manufacturing.
For more information on 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, heat treatment furnaces, melting furnaces, and rolling mills. We also utilize a unique hydroforming process for manufacturing parts.
We use advanced heat treatment furnace equipment to ensure the stability and high performance of our stainless steel rods.
At Daxun Stainless Steel, we employ the world's most advanced vacuum induction, vacuum consumable, and electroslag furnaces. These technologies minimize impurities and enhance the performance of our stainless steel rods.
Our stainless steel products are meticulously certified and thoroughly traceable. We proudly supply only the highest quality stainless steel to elite industries, including 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 |
431 Stainless Steel Bar Material boasts exceptional corrosion resistance across a diverse array of corrosive environments. While it offers moderate resistance to salt water in cooler southern regions, performance may diminish in warmer tropical waters. Comparatively, the corrosion resistance of 431 Round Bar Material is similar to, or slightly less than, that of 304 Grade Material. Optimal performance is achieved when the surface is smooth, in its hardened and tempered state.
This material resists scaling in intermittent service up to 925°C and in continuous service up to 870°C. However, usage is generally not recommended at temperatures exceeding the relevant tempering temperature due to the potential reduction in mechanical properties.
Full annealing is impractical for this grade as it hardens even when cooled slowly. For Process Annealing, heat to 620-660°C and allow to air cool.
Hardening is achieved by heating to 980-1065°C, maintaining this temperature for approximately 30 minutes, then quenching in air or oil. Pre-heating at 760-790°C may be beneficial for intricate parts or those already hardened. Temper according to mechanical requirements at temperatures listed in the accompanying table.
Avoid the tempering range of 425-600°C due to a decrease in impact toughness, although this effect is less pronounced compared to other martensitic grades.
Welding presents challenges due to the risk of cracking. A pre-heat of 200-300°C is advised before welding. While Grade 410 filler rod can be used, Grades 308L, 309, or 310 will yield more ductile welds, provided matching properties are not a necessity. Post-weld heat treatment at 650°C is recommended.
When annealed, this grade is relatively easy to machine. However, once hardened beyond 30HRC, machining becomes more challenging. The Ugima Improved Machinability version of Grade 431 significantly enhances achievable machining speeds and tool lifespan.
Ideal for: Nuts and bolts, propeller shafting, pump shafts, beater bars, and marine hardware.
The properties specified pertain to bar products under ASTM A276. Similar, though not necessarily identical, properties are detailed for other products such as plates and forgings in their respective specifications.
Stainless steel round bars find extensive application across numerous sectors, from construction to automotive parts. Recognizing their diverse usage, Daxun Alloys provides these bars in various grades and sizes. With our advanced cutting service, we ensure precise fulfillment of your requirements every time.
Can you provide SS grinding bar & rod?
Yes, we specialize in SS grinding bars & rods that feature precise dimensions, exceptional roundness, and excellent straightness, which outperform standard polished stainless steel bars. However, the processing cost is slightly 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, and 316.
Additionally, we provide 400 series, 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?
Absolutely, we can manufacture products according to your drawings to ensure they meet your exact specifications and satisfaction.
Q3. How does your factory maintain quality control?
Quality is our top priority. We consistently emphasize stringent quality control measures from the beginning of production to the final stages.
Q4. Can I request to change the form of packaging and transportation?
Yes, we can modify the packaging and transportation forms based on your requests.
Please note that you will need to bear any additional costs incurred during this period and any price differences.
Q5. How does your factory handle quality control?
Quality is our top priority. We consistently emphasize stringent quality control measures from the beginning of production to the final stages.
Q6. What is the delivery time?
A: Typically, delivery takes 7~20 working days after payment confirmation.
For urgent orders, we can expedite the process to ensure earlier completion.
Q7. What are your payment terms?
A: 100% T/T in advance, or 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 make DDQ (Deep Drawing Quality)?
A: Yes, we can! Our materials are suitable for stainless steel pots, sinks, bowls, and more. Simply inform us of your usage, and we will adjust the mechanical properties to meet your specific requirements.
Q9: How can I get a sample?
A: FREE samples are available for your evaluation. For small pieces, we may cover the courier cost, depending on the situation.
Q10: Which countries have you exported to?
A: To date, we have exported stainless steel materials to numerous countries including Vietnam, Thailand, Turkey, Russia, Morocco, Korea, India, Pakistan, UAE, Ukraine, and many more.
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