| 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, a renowned name in the industry, has been supplying top-quality 431 Stainless Steel Round Bars and Rods worldwide for many years. Recognized as the best supplier of SS 431 Round Bars, we export premium quality round bars adhering to both national and international standards. Our offerings come in various specifications to meet diverse needs. Type 431 is a hardenable martensitic stainless steel alloy known for its exceptional tensile and torsional strength, making it perfect 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 state-of-the-art radial forging machines, heat treatment furnaces, melting furnaces, and rolling mills for titanium rods, along with a unique hydroforming process for part manufacturing.
Our advanced heat treatment furnace ensures the stability and high performance of our stainless steel rods through precise heat treatment processes.
Utilizing the world's leading vacuum induction furnace, vacuum consumable furnace, and electroslag furnace, Daxun Stainless Steel minimizes impurities during smelting to enhance the performance of our finished stainless steel rods.
Our stainless steel products are fully certified and traceable. We proudly supply the highest quality stainless steel to leading industries such as aerospace, industrial, medical, marine, and military.
| 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 outstanding corrosion resistance against a diverse range of corrosive environments. In salt water, particularly in the cooler southern waters, it demonstrates some resistance, although it's less effective in the warmer tropical waters. Comparatively, the corrosion resistance of 431 Round Bar Material is on par with, or slightly less than, that of 304 Grade Material. Optimal performance is achieved with a smooth surface in a hardened and tempered state.
This material resists scaling during intermittent service up to 925°C and continuous service up to 870°C. However, usage above the recommended tempering temperature is generally discouraged due to potential reductions in mechanical properties.
For a full anneal, this grade is impractical due to its tendency to harden even when cooled slowly. A process anneal involves heating to 620-660°C followed by air cooling.
Hardening is achieved by heating to 980-1065°C, holding for about 30 minutes, then quenching in air or oil. For complex parts or those already hardened, pre-heating at 760-790°C can be beneficial. Tempering should be adjusted to meet mechanical requirements, referencing the accompanying temperature table.
Avoid tempering within the range of 425-600°C to prevent reduced impact toughness. While this effect is less pronounced than in most other martensitic grades, caution is still advised.
Welding this material can be challenging due to the risk of cracking. Pre-heating to 200-300°C is recommended before welding. While Grade 410 filler rod is an option, Grades 308L, 309, or 310 are preferable for more ductile welds, provided matching properties are not essential. Post-weld heat treatment at 650°C is advised.
In its annealed state, this grade is relatively easy to machine. However, when hardened beyond 30HRC, machining becomes more challenging. The Ugima Improved Machinability version of Grade 431 significantly enhances achievable machining speeds and tool life.
Common applications include nuts and bolts, propeller shafting, pump shafts, beater bars, and marine hardware.
The specified properties pertain to bar products under ASTM A276. While similar, properties for other products like plates and forgings have their own respective specifications.
Stainless steel round bars are indispensable across numerous sectors, from construction to automotive parts. Daxun Alloys provides a broad selection of stainless steel round bars in various grades and sizes. Our advanced, free cutting service ensures precise fulfillment of your specifications every time.
Can you do SS grinding bar & rod?
Yes, we can manufacture SS grinding bar & rod with precise dimensions, exceptional roundness, and perfect straightness. Our SS grinding bars exceed the quality of standard stainless steel polished bars, though they come with a higher processing cost.
Q1: What products can you offer?
A: We offer a diverse range of general steel types, including 310S, 316L, 304, 304L, 201, 904L, 316H, and 316. Our 300 series products are also widely available.
Additionally, we provide 400 series stainless steel, duplex stainless steel 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 based on your drawings to meet your specific requirements.
Q3. How does your factory manage quality control?
Quality is our top priority. We implement rigorous quality control measures throughout the entire production process, from start to finish.
Q4. Can I request to change the form of packaging and transportation?
Yes, we can adjust the packaging and transportation methods as per your request.
However, you will need to bear any additional costs incurred during this period.
Q5. How does your factory manage quality control?
Quality is our top priority. We implement rigorous quality control measures throughout the entire production process, from start to finish.
Q6. How long is the delivery time?
A: Typically, our delivery time ranges from 7 to 20 working days after the payment is confirmed.
If the order is urgent, we will expedite the manufacturing process to meet your deadline.
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 make DDQ (Deep Drawing Quality)?
A: Yes, we specialize in producing DDQ materials suitable for stainless steel pots, sinks, bowls, and more. Let us know your specific application, and we will tailor the mechanical properties to meet your requirements.
Q9: How can I get a sample?
A: FREE samples are available for your inspection and testing. For small pieces, we can cover courier costs, depending on the situation.
Q10: Which countries have you exported to?
A: We have successfully 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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