| 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 |
At Daxun Alloys, we pride ourselves on delivering top-tier products worldwide, consistently leading the industry with our premium SS 431 Round Bars/Rods. Adhering to both national and international quality standards, we provide an array of specifications to satisfy our global clientele. Type 431, a hardenable martensitic stainless steel, is celebrated for its exceptional tensile and torsional strength, making it the preferred choice for manufacturing robust shafts.
Reach Out to Daxun for Detailed Information on Stainless Steel Rods
Comprehensive 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 advanced radial forging machines, sophisticated heat treatment furnaces, high-efficiency melting furnaces, and precision rolling mills. Additionally, Daxun employs a unique hydroforming process for manufacturing high-quality parts.
Our stainless steel rod heat treatment process utilizes cutting-edge furnace equipment, ensuring material stability and superior performance.
Employing the world's most advanced vacuum induction, vacuum consumable, and electroslag furnaces, Daxun minimizes impurities during smelting to significantly enhance the performance quality of our stainless steel rods.
At Jiangsu Daxun Alloy Co., Ltd., our stainless steel products are meticulously certified and traceable. We proudly deliver premium-quality stainless steel to prestigious 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 boasts outstanding corrosion resistance across a wide spectrum of corrosive environments. It can endure cold southern waters with some saltwater resistance; however, it is less effective in warm tropical conditions. Overall, its corrosion resistance is comparable to or marginally lower than 304 Grade Material. For optimal performance, a smooth surface in the hardened and tempered state is recommended.
This material resists scaling up to 925°C during intermittent service and up to 870°C in continuous service. However, it is generally not advisable for use above the tempering temperature due to the decline in mechanical properties.
Full anneal is not practical for this grade as it hardens even with slow cooling. Process Anneal involves heating to 620-660°C followed by air cooling.
The material is hardened by heating to 980-1065°C, holding for approximately half an hour, and then quenching in air or oil. Pre-heating at 760-790°C can be beneficial for complex or pre-hardened parts. Tempering should be done to meet mechanical requirements as indicated in our accompanying table.
The tempering range of 425-600°C should be avoided due to reduced impact toughness, although the impact 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 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 required. Post-weld heat treatment at 650°C is recommended.
In its annealed condition, this grade is relatively easy to machine. However, machining becomes more challenging if hardened to above 30HRC. The Ugima Improved Machinability version of Grade 431 allows for significantly enhanced machining speeds and extended tool life.
Ideal for nuts and bolts, propeller shafting, pump shafts, beater bars, and marine hardware.
These properties are specified for bar products in ASTM A276. Similar but not necessarily identical properties are specified for other products like plates and forgings in their respective specifications.
Stainless steel round bars are extremely versatile, finding applications ranging from construction to automotive parts. Jiangsu Daxun Alloy Co., Ltd. offers these bars in various grades and sizes to meet diverse needs. With our advanced and free cutting service, we ensure precise compliance with your specifications every time.
Can you do SS grinding bar & rod?
Absolutely! We excel in producing SS grinding bars & rods with unmatched precision in dimension, roundness, and straightness. These qualities surpass those of standard stainless steel polished bars, although this comes with a higher processing cost.
Q1: What products can you offer?
A: We offer a wide range of steel types including but not limited to 310S, 316L, 304, 304L, 201, 904L, 316H, and 316.
Additionally, we provide an extensive selection of 400 series steels, 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 custom-produce products based on your detailed drawings to ensure maximum satisfaction.
Q3. How does your factory handle quality control?
Quality is our top priority. We implement a stringent quality control process from start to finish to ensure the highest standards are met.
Q4. Can I request to change the form of packaging and transportation?
Yes, we can modify the packaging and transportation methods according to your requests.
However, you will need to cover any additional costs and discrepancies incurred during this process.
Q5. How does your factory handle quality control?
Quality is paramount for us. We enforce rigorous quality control measures from the beginning to the end of the production process.
Q6. How long is the delivery time?
A: Typically, delivery takes 7 to 20 working days after payment confirmation.
If your order is urgent, we will expedite the process to meet your needs.
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 produce DDQ (Deep Drawing Quality) materials?
A: Yes, we can. Our materials are ideally suited for stainless steel pots, sinks, bowls, etc. Inform us of your specific requirements, and we will adjust the mechanical properties accordingly.
Q9: How can I obtain a sample?
A: Free samples are available for your inspection and testing. For small pieces, we might cover the courier cost depending on the situation.
Q10: To which countries have you exported your products?
A: We have proudly exported our stainless steel materials to numerous countries including Vietnam, Thailand, Turkey, Russia, Morocco, South Korea, India, Pakistan, UAE, Ukraine, and many more.
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