Audited Supplier
| 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 |
Global leader in stainless rod and Round Bar fabrication services
Daxun Alloys has been at the forefront of delivering top-tier quality products worldwide for many years. We steadfastly ensure that Daxun Alloys remains the premier supplier of SS 431 Round Bars/Rods. Our commitment to exporting premium round bars that meet both national and international quality standards has solidified our reputation on a global scale. We offer an extensive range of round bars and rods in various specifications. Type 431, a hardenable martensitic stainless steel alloy, is renowned for its exceptional tensile and torsional strength, making it the material of choice for shaft manufacturing.
Stainless steel rod and bar undergo heating and are rolled through multiple passes in a rolling mill. Available in a complete range of specifications, their performance consistently meets and exceeds standards and requirements.
Cold drawn bright Stainless steel rods
Cold-drawn Stainless steel rods are meticulously drawn under cold working conditions, resulting in a smooth surface that can be polished and ground to perfection.
Forged Stainless steel rod and bar
Forged multiple times to enhance mechanical properties, our Forged Stainless steel rods boast superior strength and durability.
Our extensive network of service centers ensures a ready supply of stainless steel bar products, available in common sizes and alloys. We also offer custom-sized stainless steel bars and can arrange a stocking program for quantities below factory minimums, ensuring prompt, fast turnaround. Daxun Alloys stocks stainless steel round bars ranging from 1/16" to 26" in diameter. Our round bars are offered in nearly every grade of stainless steel, including 302, 303, 304/L, 309/S, 310/S, 316/L, 317/L, 321, 321/H, 347, 347H, 410, 416, 420, 440C, 17-4PH, Duplex 2205, and Alloy 20.
Our inventory features our uniquely processed stainless steel round bars, melted to exacting standards for improved machinability and reduced overall part cost. With advanced bar processing machinery, Daxun Alloys is equipped to produce bars tailored to the precise specifications of our customers.
1. Heat Treatments Daxun can perform expert heat treatments on our stainless steel bars, contingent on the metal's chemistry. 2. Positive Material Identification (PMI) We offer in-house or independent laboratory PMI testing to ensure material integrity. 3. Ultrasonic Testing (UT) Utilizing high-frequency sound energy, our UT services are crucial for defect detection/ evaluation, dimensional measurement, and more.
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 |
431 Stainless Steel Rod Physical properties
Daxun's Stainless steel rods manufacturing capabilities
Our forming capabilities are unrivaled, featuring state-of-the-art radial forging machines, heat treatment and melting furnaces, and rolling mills for titanium rod manufacturing. Additionally, our unique hydroforming process sets us apart in parts manufacturing.
Daxun's heat treatment furnace
Our advanced heat treatment furnace equipment ensures the stability and high performance of our stainless steel rods through precise and consistent heat treatment processes.
Daxun's smelting ability
Employing the world's most advanced vacuum induction furnace, vacuum consumable furnace, and electroslag furnace, Daxun Stainless Steel significantly reduces impurities during smelting to enhance the performance of our finished stainless steel rods.
Our premium stainless steel products come with full certification and traceability. We proudly supply the highest quality stainless steel to top-tier 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 |
Corrosion Resistance
431 Stainless Steel Bar Material boasts exceptional corrosion resistance across a broad spectrum of corrosive media. While it shows some resilience in salt water in cold southern regions, it may not perform as effectively in warm tropical environments. Generally, the corrosion resistance of 431 Round Bar Material is on par with or slightly inferior to that of 304 Grade Material. This material excels when maintained with a smooth surface in its hardened and tempered state.
Heat Resistance
This grade withstands scaling during intermittent service up to 925°C and continuous service up to 870°C. However, it is not recommended for use at temperatures above the relevant tempering temperature due to a decline in mechanical properties.
Heat Treatment
Annealing
Full anneal is impractical for this grade as it hardens even with slow cooling. For process annealing, heat to 620-660°C and allow to air cool.
Hardening
Hardening is achieved by heating to 980-1065°C, holding for approximately 30 minutes, 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 required mechanical properties, with temperatures detailed in the accompanying table.
Avoid the tempering range of 425-600°C due to compromised impact toughness, although the reduction is less pronounced compared to most other martensitic grades.
Welding
Welding is challenging due to the risk of cracking. A pre-heat of 200-300°C is advisable before welding. Grade 410 filler rod can be used, but Grades 308L, 309, or 310 will yield more ductile welds, provided matching properties are not necessary. Post-weld heat treatment at 650°C is recommended.
Machining
In its annealed state, this grade is relatively easy to machine. However, machining becomes more difficult when hardened above 30HRC. The Ugima Improved Machinability version of Grade 431 significantly enhances achievable machining speeds and tool longevity.
Typical Applications
Ideal for nuts and bolts, propeller shafting, pump shafts, beater bars, and marine hardware.
Specified Properties
These properties are specified for bar products under ASTM A276. Similar but not necessarily identical properties are outlined for other products like plates and forgings in their respective specifications.
SS 431 grade stainless steel round bars
Stainless steel round bars have a wide array of applications ranging from construction to automotive parts. Given their versatility, Daxun Alloys provides stainless steel round bars in various grades and sizes. Our advanced free cutting service ensures precise fulfillment of your requirements every time.
Can you provide SS grinding bars & rods?
Absolutely, we specialize in SS grinding bars and rods that boast precise dimensions, exceptional roundness, and straightness. These features surpass those of polished stainless steel bars, though the processing costs are notably higher.
Q1: What range of products do you offer?
A: We offer a diverse range of general steel types, including 310S, 316L, 304, 304L, 201, 904L, 316H, 316, and 316L 300 series.
Additionally, we provide 400 series stainless steel and duplex stainless steel such as 2205, 2304, 2101, 2507, among others. High-nickel alloys like 904L, 800H, and 600H are also available.
Q2: Can you manufacture products based on my drawings?
Yes, we can create products tailored to your specific drawings, ensuring they meet your highest expectations.
Q3: How does your factory ensure quality control?
Quality is our top priority. We meticulously manage quality control from the initial stages through to the final product.
Q4: Can I request changes to packaging and transportation methods?
Yes, we can customize the packaging and transportation methods to your specifications,
but you will need to cover the incurred costs and any additional expenses.
Q5: How does your factory manage quality control?
Quality remains our top priority. We place significant emphasis on quality control from start to finish.
Q6: What is your delivery time?
A: Typically, delivery is within 7 to 20 working days after payment confirmation.
For urgent orders, we expedite production to meet your timeline.
Q7: What are your payment terms?
A: 100% T/T in advance, or 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 Deep Drawing Quality (DDQ) materials?
A: Yes, we can. Our materials are suitable for products like stainless steel pots, sinks, and bowls. Share your specific application, and we will adjust the mechanical properties accordingly.
Q9: How can I obtain a sample?
A: FREE samples are available for evaluation. 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 various countries including Vietnam, Thailand, Turkey, Russia, Morocco, Korea, India, Pakistan, UAE, Ukraine, and more.
