| 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 the epitome of excellence in delivering top-quality products worldwide for many years. We pride ourselves on being the premier supplier of SS 431 Round Bars/Rods. Adhering to both national and international quality standards, we offer a diverse range of specifications to meet our clients' needs globally. Type 431 stainless steel is a hardenable martensitic alloy known for its high tensile and torsional strength, making it an ideal choice for manufacturing robust shafts.
For more information on our exquisite 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 advanced forming capabilities include state-of-the-art radial forging machines, heat treatment furnaces, melting furnaces, rolling mills for titanium rods, and a unique hydroforming process for precision manufacturing.
Using cutting-edge heat treatment furnace equipment, we ensure the stainless steel rod's stability and high performance through advanced thermal processes.
Daxun Stainless Steel employs the world's most advanced vacuum induction, vacuum consumable, and electroslag furnaces. These advanced smelting technologies reduce impurities and elevate the performance of our finished stainless steel rods.
Our stainless steel offerings come with full certification and traceability, ensuring top-tier quality for the most demanding sectors. We proudly serve a diverse range of industries, including 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 provides exceptional resistance to a variety of corrosive environments. It exhibits moderate resistance in cold marine waters but may not be ideal for warm tropical conditions. Comparable to 304 Grade, its corrosion resistance is slightly lower. Optimal performance is achieved with a smooth surface in a hardened and tempered state.
This material withstands scaling in intermittent service up to 925°C and continuous service up to 870°C. However, usage above the tempering temperature is generally discouraged due to potential reductions in mechanical properties.
Full annealing is impractical for this grade as it hardens even with slow cooling. For Process Anneal, heat to 620-660°C and cool in air.
Hardening involves heating to 980-1065°C, holding for approximately 30 minutes, then quenching in air or oil. Pre-heating at 760-790°C is advisable for complex parts or pre-hardened components. Temper according to mechanical requirements at specified temperatures.
Avoid tempering between 425-600°C due to a decrease in impact toughness, although the effect is less significant compared to other martensitic grades.
Welding can be challenging due to *** susceptibility. Pre-heating at 200-300°C is recommended. While Grade 410 filler rod is suitable, Grades 308L, 309, or 310 provide more ductile welds if matching properties are non-essential. Post-weld heat treatment at 650°C is advisable.
In its annealed state, Grade 431 is relatively easy to machine. However, machining becomes more difficult when hardened above 30 HRC. The Ugima Improved Machinability version of Grade 431 significantly enhances machining speeds and tool life.
Common applications include nuts and bolts, propeller shafting, pump shafts, beater bars, and marine hardware.
These properties are specified for bar products under ASTM A276. Similar but not necessarily identical properties are defined for other forms such as plates and forgings in their respective standards.
Stainless steel round bars are highly versatile, finding applications across various sectors from construction to automotive components. Jiangsu Daxun Alloy Co., Ltd. offers a diverse range of grades and sizes, coupled with our advanced cutting services to precisely meet your specifications every time.
Can you provide SS grinding bars & rods?
Absolutely! Our SS grinding bars & rods boast exceptional precision in dimension, roundness, and straightness, surpassing standard polished stainless steel bars. However, please note that this superior quality comes with a higher processing cost.
Q1: What products can you offer?
A: We offer a wide range of steel types, including 310S, 316L, 304, 304L, 201, 904L, 316H, 316, 300 series, and 400 series. Additionally, we provide duplex stainless steel such as 2205, 2304, 2101, 2507, and high-nickel alloys like 904L, 800H, 600H.
Q2. Can you produce the products according to my own drawings?
Yes, we can custom-manufacture products based on your drawings to ensure they meet your exact specifications.
Q3. How does your factory handle quality control?
Quality is our utmost priority. We rigorously control quality from the initial stages of production through to the final product.
Q4. Can I request a change in packaging and transportation?
Yes, we can accommodate changes in packaging and transportation as per your request.
However, you will be responsible for any additional costs and differences incurred during this process.
Q5. How does your factory ensure quality?
Quality is paramount. We implement stringent quality control measures throughout the entire manufacturing process.
Q6. How long is the delivery time?
A: Delivery typically takes 7-20 working days after payment confirmation.
For urgent orders, we can expedite processing to meet your timeline.
Q7. What are your payment terms?
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)?
A: Yes, our materials are suitable for applications such as stainless steel pots, sinks, and bowls. Let us know your specific use, and we will adjust the mechanical properties to meet your needs.
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 circumstances.
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 more.
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