| Type: | Stainless Steel Bars |
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| Standard: | ASTM, AISI, GB, JIS, DIN, EN |
| Grade: | 431 |
| Certification: | ISO, RoHS, IBR, AISI, ASTM, GB, EN, DIN, JIS |
| Shape: | Round |
| Technique: | Hot Rolled |
| Samples: |
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| Customization: |
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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 excellence in supplying superior quality products worldwide for many years. Our commitment ensures that Daxun Alloys stands as the premier supplier of SS 431 Round Bars/Rods. We adhere strictly to both national and international quality standards, delivering premium round bars to our global clientele in a variety of specifications. Type 431, a hardenable martensitic stainless steel alloy, boasts exceptional tensile and torsional strength, making it the ideal material for shaft manufacturing.
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, high-performance melting furnaces, and efficient rolling mills for producing titanium rods. We also utilize a unique hydroforming process for part manufacturing.
Our heat treatment process employs advanced furnace equipment to ensure the material's stability and high performance.
Daxun Stainless Steel utilizes the world's most advanced vacuum induction, vacuum consumable, and electroslag furnaces to minimize impurities during the smelting process, thereby enhancing the performance of the finished stainless steel rods.
Our stainless steel products come with full certification and traceability, ensuring the highest standards of quality and reliability. We proudly supply superior stainless steel to leading 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 |
431 Stainless Steel Bar Material boasts superior corrosion resistance across a multitude of corrosive environments. While it demonstrates some saltwater resistance in cold southern seas, its performance may be limited in warmer tropical waters. When compared to 304 Grade Material, the corrosion resistance of 431 Round Bar Material is comparable or slightly inferior. 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 specified tempering temperature is generally discouraged due to a reduction in mechanical properties.
Full anneal is impractical for this grade as it hardens even with slow cooling. For Process Anneal, heat to 620-660°C followed by air cooling is recommended.
Hardening is achieved by heating the material 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 pre-hardened components. Tempering should be done according to mechanical requirements, as detailed in the accompanying table.
Avoid the tempering range of 425-600°C due to diminished impact toughness, although the effect is less significant than in most other martensitic grades.
Welding this material is challenging due to the risk of cracking. A pre-heat of 200-300°C is recommended before welding. While Grade 410 filler rod can be used, Grades 308L, 309, or 310 offer more ductile welds if matching properties are not essential. Post-weld heat treatment at 650°C is advisable.
In its annealed state, this grade is relatively easy to machine. However, machining becomes more difficult if the material is hardened beyond 30HRC. Ugima Improved Machinability Grade 431 significantly enhances achievable machining speeds and tool life.
Nuts and bolts. Propeller shafting. Pump shafts. Beater bars. Marine hardware.
The specified properties for bar products are outlined in ASTM A276. Similar but not necessarily identical properties are specified for other products such as plates and forgings in their respective specifications.
Stainless steel round bars have extensive applications, spanning from construction to automotive components. Given their versatility, Daxun Alloys offers these bars in various grades and sizes. Our advanced free cutting service ensures precise conformity to your specifications every time.
Can you provide SS grinding bars & rods?
Absolutely! We specialize in SS grinding bars & rods with impeccable precision in dimension, roundness, and straightness. These are far superior to standard stainless steel polished bars, though the processing costs may be higher.
Q1: What products can you offer?
A: We offer a diverse range of general steel types, including 310S, 316L, 304, 304L, 201, 904L, 316H, 316, and 316L, along with the entire 300 series.
We also provide the 400 series and duplex stainless steels like 2205, 2304, 2101, 2507, etc. Additionally, we specialize in high-nickel alloys such as 904L, 800H, and 600H.
Q2. Can you produce products according to my drawings?
Yes, we can manufacture products tailored to your drawings, ensuring they meet your highest satisfaction.
Q3. How does your factory handle quality control?
Quality is our utmost priority. We implement stringent quality control measures throughout the entire production process, from start to finish.
Q4. Can I request changes in packaging and transportation?
Yes, we can modify the packaging and transportation methods according to your requests.
Please note that additional costs incurred during this period will be borne by you, including any price differences.
Q5. How does your factory handle quality control?
Quality is our utmost priority. We implement stringent quality control measures throughout the entire production process, from start to finish.
Q6. What is the delivery time?
A: Typically, it takes 7 to 20 working days after payment confirmation.
For urgent orders, we will expedite the process to meet your deadlines.
Q7. What are your payment terms?
A: 100% T/T in advance, or Western Union (for small orders).
B: 30% T/T deposit and 70% balance 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 ideal for making stainless steel pots, sinks, bowls, etc. Tell us your specific requirements, and we'll adjust the mechanical properties to suit your needs.
Q9: How can I get a sample?
A: We offer FREE samples for your inspection and testing. If you need a small piece, we can cover the courier costs, depending on the situation.
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 more.
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