| 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 premier supplier of top-tier stainless steel products worldwide for many years. Our dedication to quality ensures that Daxun Alloys stands out as the best source for SS 431 Round Bars and Rods. We rigorously adhere to both national and international quality standards, exporting superior round bars in various specifications to clients around the globe. Type 431, a hardenable martensitic stainless steel, boasts high tensile and torsional strength, making it perfect for shaft manufacturing.
For further details 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 state-of-the-art radial forging machines, heat treatment and melting furnaces, and rolling mills. We specialize in manufacturing titanium rods and employ a unique hydroforming process for part production.
Our advanced heat treatment furnaces ensure the stability and superior performance of our stainless steel rods.
Using the world's most advanced vacuum induction, vacuum consumable, and electroslag furnaces, we reduce impurities to enhance the performance of our stainless steel rods.
Our stainless steel products are fully certified and traceable. We proudly supply top-tier stainless steel to premier industries, including 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 |
431 Stainless Steel Bar Material boasts exceptional corrosion resistance, making it suitable for various corrosive environments. While it offers some resistance to salt water in cold, southern waters, it may not perform as well in warm, tropical waters. Comparatively, its corrosion resistance is on par with or slightly less than 304 Grade Material. Optimal performance is achieved when the material maintains a smooth surface in a hardened and tempered state.
This material resists scaling at intermittent temperatures up to 925°C and continuous temperatures up to 870°C. However, it is generally not advised for use above the relevant tempering temperature due to potential reductions in mechanical properties.
Full Anneal: Not practical for this grade due to its tendency to harden even with slow cooling. Process Anneal: Heat to 620-660°C, then air cool.
Harden by heating to 980-1065°C, holding for about 30 minutes, then quench in air or oil. Pre-heating at 760-790°C may benefit complex parts or those already hardened. Temper according to mechanical needs, as detailed in the accompanying table.
Avoid the tempering range of 425-600°C due to potential reductions in impact toughness, though the effect is less severe compared to other martensitic grades.
Welding is challenging due to the risk of cracking. A pre-heat of 200-300°C is advisable before welding. While a Grade 410 filler rod is usable, Grades 308L, 309, or 310 can produce more ductile welds if matching properties are not essential. Post-weld, heat treat at 650°C.
In its annealed state, this grade is relatively easy to machine. However, machining becomes challenging if hardened above 30HRC. The Ugima Improved Machinability version of Grade 431 significantly enhances achievable machining speeds and tool life.
Nuts and bolts, propeller shafting, pump shafts, beater bars, marine hardware.
These properties are specified for bar products in ASTM A276. Similar, yet not necessarily identical properties, are specified for other products like plates and forgings in their respective specifications.
Stainless steel round bars are extensively utilized across various industries, from construction to automotive parts. Daxun Alloys offers these bars in a broad range of grades and sizes. With our advanced, complimentary cutting service, we ensure precise fulfillment of your specifications every time.
Can you provide SS grinding bars and rods?
Yes, we offer SS grinding bars and rods with precise dimensions, exceptional roundness, and straightness, superior to polished stainless steel bars. However, please note that the processing cost is also higher.
Q1: What products can you offer?
A: We offer a wide range of general steel types, including 310S, 316L, 304, 304L, 201, 904L, 316H, and 316, as well as the 300 series.
Additionally, we provide 400 series stainless steel and duplex stainless steels like 2205, 2304, 2101, and 2507, as well as high-nickel alloys such as 904L, 800H, and 600H.
Q2: Can you produce products according to my drawings?
Yes, we can manufacture products precisely according to your drawings, ensuring the highest level of satisfaction.
Q3: How does your factory manage quality control?
Quality is our top priority. We consistently maintain strict quality control from the beginning to the end of the production process.
Q4: Can I request changes to the packaging and transportation?
Yes, we can modify the packaging and transportation methods according to your specific requirements,
but any additional costs incurred during this period will be borne by you.
Q5: How does your factory manage quality control?
Quality is our top priority. We consistently maintain strict quality control from the beginning to the end of the production process.
Q6: How long is the delivery time?
A: Delivery time is typically 7 to 20 working days after payment confirmation.
For urgent orders, we will expedite the production process to meet your needs.
Q7: What payment methods do you accept?
A: 100% T/T in advance, or Western Union for smaller orders.
B: 30% T/T upfront, with the remaining 70% before shipment.
C: 100% Irrevocable LC at sight for large orders.
Q8: Can you provide Deep Drawing Quality (DDQ) material?
A: Yes, we can supply DDQ material suitable for making stainless steel pots, sinks, bowls, etc. Provide us with your usage details, 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. If you need a small piece, we might cover the courier cost, depending on the situation.
Q10: Which countries have you exported to?
A: We have exported stainless steel materials to countries including Vietnam, Thailand, Turkey, Russia, Morocco, Korea, India, Pakistan, UAE, Ukraine, and more.
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