| 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 |
For many years, Daxun Alloys has proudly delivered top-tier products worldwide. Renowned as the premier supplier of SS 431 Round Bars/Rods, we export quality round bars that adhere to both national and international standards. Our diverse specifications cater to a broad spectrum of needs. Type 431, a hardenable martensitic stainless steel alloy, boasts high tensile and torsional strength, making it the ideal choice for manufacturing shafts.
For more information on 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 feature cutting-edge radial forging machines, heat treatment furnaces, melting furnaces, and rolling mills for titanium rod production, alongside a unique hydroforming process for part manufacturing.
Our advanced heat treatment furnace equipment ensures the stability and high performance of our stainless steel rods.
Daxun Stainless Steel employs the world's most advanced vacuum induction furnace, vacuum consumable furnace, and electroslag furnace to minimize impurities and enhance the performance of our finished stainless steel rods.
Our stainless steel products boast full certification and traceability. We are dedicated to delivering top-tier quality stainless steel to prominent sectors such as aerospace, industrial, medical, marine, and military, ensuring unparalleled reliability and performance.
| 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 exceptional corrosion resistance across a diverse array of corrosive environments. While it shows moderate resistance to saltwater in cooler southern waters, it may not be as effective in warmer tropical conditions. Overall, the corrosion resistance of 431 Round Bar Material is comparable to, or slightly less than, that of 304 Grade Material. Its optimal performance is achieved when it features a smooth surface in the hardened and tempered state.
This material resists scaling effectively in intermittent service up to 925°C and in continuous service up to 870°C. However, it is generally not advised for use at temperatures exceeding the relevant tempering point due to potential reductions in mechanical properties.
Full annealing is impractical for this grade as it tends to harden even with slow cooling. For process annealing, heat to 620-660°C and allow to air cool.
Harden by heating to 980-1065°C, maintain for approximately 30 minutes, then quench in air or oil. Pre-heating at 760-790°C can be beneficial for intricate parts or those already hardened. Adjust tempering to meet mechanical requirements, following the temperature guidelines in the accompanying table.
Avoid the tempering range of 425-600°C due to diminished impact toughness, albeit to a lesser extent than in most other martensitic grades.
Welding this material is challenging because of the high risk of cracking. Pre-heating to 200-300°C is advisable before welding. While Grade 410 filler rod can be used, Grades 308L, 309, or 310 are preferable for more ductile welds, provided matching properties are not essential. Conduct post-weld heat treatment at 650°C.
In its annealed state, this grade is relatively easy to machine. However, once hardened to above 30HRC, machining becomes more challenging. Daxun Alloys offers a Ugima Improved Machinability version of Grade 431, significantly enhancing machining speeds and extending tool life.
Ideal for a variety of uses including nuts and bolts, propeller shafting, pump shafts, beater bars, and marine hardware.
The specified properties are for bar products according to ASTM A276. Similar, though not necessarily identical, properties are specified for other products like plates and forgings in their respective specifications.
Our stainless steel round bars are versatile and widely utilized across various industries, from construction to automotive parts. Given their extensive applications, Jiangsu Daxun Alloy Co., Ltd. offers these round bars in multiple grades and sizes. With our state-of-the-art, complimentary cutting service, we ensure precise and tailored solutions to meet your specific requirements every time.
Can you produce stainless steel grinding bars and rods?
Yes, we excel in producing stainless steel grinding bars and rods that boast precise dimensions, roundness, and straightness, surpassing the quality of standard polished stainless steel bars, though the processing costs are higher.
Q1: What products can you offer?
A: We provide a variety of general steel types including 310S, 316L, 304, 304L, 201, 904L, 316H, 316, 316L, and the 300 series.
Additionally, we offer the 400 series and duplex stainless steels such as 2205, 2304, 2101, and 2507, along with high-nickel alloys like 904L, 800H, and 600H.
Q2. Can you produce the products according to my own drawings?
Yes, we can manufacture products exactly according to your drawings to ensure they meet your satisfaction.
Q3. How does your factory manage quality control?
Quality is our utmost priority. We consistently prioritize quality control from the initial stage to the final product.
Q4. Can I request changes in the form of packaging and transportation?
Yes, we can modify the packaging and transportation forms as per your request.
However, you will need to cover the additional costs and any differences incurred during this period.
Q5. How does your factory manage quality control?
Quality is our utmost priority. We consistently prioritize quality control from the initial stage to the final product.
Q6. What is the delivery time?
A: The delivery time ranges from 7 to 20 working days after payment is confirmed.
For urgent orders, we will expedite the process to complete it ahead of schedule.
Q7. What are your payment terms?
A: 100% T/T advance, Western Union (for small orders),
B: 30% T/T deposit with the balance of 70% due before shipment,
C: 100% Irrevocable LC at sight (for large orders).
Q8: Can you produce Deep Drawing Quality (DDQ) stainless steel?
A: Yes, we can. Our material is suitable for making stainless steel pots, sinks, bowls, etc. Provide us with your specific usage, and we will adjust the mechanical properties to meet your requirements.
Q9: How can I obtain a sample?
A: FREE samples are available for your evaluation and testing. For small pieces, we may cover the courier cost, depending on your location.
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 many other countries.
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