| 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 |
For many years, Daxun Alloys has been a trusted supplier of premium quality products worldwide. We pride ourselves on being the top choice for SS 431 Round Bars/Rods. We export exceptional round bars that meet both national and international standards, offering a variety of specifications. Type 431 is a hardenable martensitic stainless steel alloy known for its high tensile and torsional strength, making it ideal for manufacturing robust shafts.
For additional information on our premium 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 state-of-the-art forming capabilities include radial forging machines, heat treatment furnaces, melting furnaces, and rolling mills, as well as a unique hydroforming process for manufacturing titanium rods and other parts.
We utilize advanced heat treatment furnace equipment to ensure the stability and superior performance of our stainless steel rods.
Utilizing the world's most advanced vacuum induction furnace, vacuum consumable furnace, and electroslag furnace, Daxun Stainless Steel minimizes impurities in the smelting process, thereby enhancing the performance of our finished stainless steel rods.
Our premium stainless steel products are fully certified and traceable, ensuring the highest standards of quality. We cater to leading industries such as aerospace, industrial, medical, marine, and military sectors, delivering top-notch stainless steel solutions tailored to meet stringent industry requirements.
| 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 superb corrosion resistance against a vast array of corrosive environments. While it can withstand salt water in cooler southern regions, its performance in warmer tropical waters is less reliable. Overall, its corrosion resistance is on par with, or slightly below, that of 304 Grade Material. Optimal performance is achieved when the material has a smooth surface and is in a hardened and tempered state.
This material resists scaling up to 925°C in intermittent service and up to 870°C in continuous service. However, it is generally not recommended for use at temperatures exceeding the relevant tempering temperature, due to a decline in mechanical properties.
Full annealing is impractical for this grade as it hardens even with slow cooling. For process annealing, heat to 620-660°C and then air cool.
Harden this material by heating to 980-1065°C, holding for about 30 minutes, and then quenching in air or oil. Pre-heating at 760-790°C can be beneficial for complex parts or those already hardened. Temper according to mechanical requirements, following the indicated temperature guidelines.
Avoid the tempering range of 425-600°C due to a reduction in impact toughness, although this effect is less pronounced than in many 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 deliver more ductile welds, provided matching properties are not required. Post-weld heat treatment at 650°C is recommended.
In its annealed state, this grade is relatively easy to machine. However, if hardened above 30HRC, machining becomes more difficult. The Ugima Improved Machinability version of Grade 431 offers significant improvements in machining speeds and tool life.
Ideal for nuts and bolts, propeller shafting, pump shafts, beater bars, and marine hardware.
The properties specified here are for bar products 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 are indispensable across various industries, from construction to automotive parts. At Daxun Alloys, we offer these round bars in an array of grades and sizes. With our advanced free cutting service, we ensure precise and tailored solutions to meet your exact requirements every time.
Can you do SS grinding bar & rod?
Yes, we offer SS grinding bars and rods with exceptional precision in dimension, roundness, and straightness. These surpass our stainless steel polished bars in quality, although the processing cost is higher.
Q1: What products can you offer?
A: We provide a variety of steel types such as 310S, 316L, 304, 304L, 201, 904L, 316H, and 316. Additionally, we offer 316L 300 series,
400 series, and duplex stainless steels like 2205, 2304, 2101, 2507, etc. We also supply 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, ensuring they meet your exact specifications.
Q3. How does your factory do regarding quality control?
Quality is our top priority. We rigorously control quality throughout the entire production process from start to finish.
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, any additional costs incurred during this process, including the spreads, will be your responsibility.
Q5. How does your factory do regarding quality control?
Quality is our priority. We ensure stringent quality control from the beginning to the end of the manufacturing process.
Q6. How long is the delivery time?
A: Standard delivery time is 7-20 working days after payment confirmation.
For urgent orders, we expedite the process to complete it ahead of schedule.
Q7. What is your Payment?
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 make DDQ (Deep Drawing Quality)?
A: Yes, we can. Our materials are suitable for stainless steel pots, sinks, bowls, etc. Let us know your specific application, and we will tailor the mechanical properties to meet your needs.
Q9: How to get a sample?
A: FREE samples are available for you to check and test. 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 countries including Vietnam, Thailand, Turkey, Russia, Morocco, Korea, India, Pakistan, UAE, Ukraine, and many more.
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