As an established SCM440 Round Bar Manufacturer and Stockist, we maintain a vast inventory of sizes and finishes including black, bright, and forged conditions. Our bars are available in both annealed and heat-treated forms, tailored to suit specific industrial requirements. All materials undergo rigorous inspection processes such as ultrasonic testing, hardness testing, and dimensional checks to guarantee the highest quality output.
Material Specification Chart of 708M40 Round Bar
| Specifications | ASTM A182, ASME SA182 |
|---|---|
| Standards | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Range of Diameter | 5mm to 500mm |
| Finish | Bright, Black, Forged, Turned Bright |
| Length | 1000 mm Long To 6000 mm Long |
| Form | Round, Billet, Ingot, Forging Etc. |
SAE 4140/ EN19 / 42crmo4 Round Bars Grade
| Country names | Hong Kong | USA | German | British | Japan | China | Australia | |
|---|---|---|---|---|---|---|---|---|
| Country standards | UNS | AISI | ASTM A29 | DIN 17200 | BS 970 | JIS G4105 | GB/T 3077 | AS 1444 |
| Grades | G41400 | 4140 | 4140 | 1.7225/ 42CrMo4 | EN 19 / 42CrMo4 | SCM440 | 42CrMo | 4140 |
Super Metal Manufacturing Co. exports 708M40 Round Bars to various countries including the USA, UK, Germany, UAE, Saudi Arabia, and Japan. Our robust export network ensures quick delivery, customized packaging, and full traceability with material test certificates (MTC). We take pride in offering SCM440 Alloy Steel Bars that meet both local and international specifications while maintaining cost-effectiveness and timely service.
The chemical composition of 708M40 Round Bar includes chromium, molybdenum, and carbon, providing superior strength, shock resistance, and hardenability. These properties make it suitable for use in industries such as automotive, aerospace, power generation, oil & gas, and heavy machinery. The bar retains high strength even under elevated temperatures, ensuring long service life and optimal performance.
Our experienced team ensures that every SCM440 Alloy Steel Round Bar meets the highest engineering standards. We also offer value-added services such as cutting, machining, and heat treatment to meet project-specific requirements. By combining technical expertise with world-class quality, Super Metal Manufacturing Co. stands as a trusted source for reliable and durable alloy steel bars globally.
If you are looking for a reliable 708M40 Round Bar Exporter, Super Metal Manufacturing Co. is your ideal partner. We not only provide high-quality products but also ensure competitive pricing, excellent customer service, and technical support to help you meet your project needs efficiently.
Alloy Steel 708M40 Round Bars Dimensions Standard
| Diameter or Width (mm) |
Weight per meter | Sectional Area | Perimeter |
| Round (kg) |
Round (cm²) |
Round (cm) |
|
| 5.0 | 0.15 | 0.20 | 1.57 |
| 5.5 | 0.19 | 0.24 | 1.78 |
| 6.0 | 0.22 | 0.28 | 1.88 |
| 7.0 | 0.30 | 0.38 | 2.20 |
| 8.0 | 0.39 | 0.50 | 2.51 |
| 9.0 | 0.50 | 0.64 | 2.83 |
| 10 | 0.63 | 0.79 | 3.14 |
| 11 | 0.75 | 0.95 | 3.46 |
| 12 | 0.89 | 1.13 | 3.77 |
| 14 | 1.21 | 1.54 | 4.40 |
| 16 | 1.58 | 2.01 | 5.03 |
| 18 | 2.00 | 2.54 | 5.65 |
| 20 | 2.47 | 3.14 | 6.28 |
| 22 | 2.98 | 3.80 | 6.91 |
| 25 | 3.85 | 4.91 | 7.85 |
| 28 | 4.83 | 6.16 | 8.80 |
| 32 | 6.31 | 8.04 | 10.05 |
| 36 | 7.99 | 10.18 | 11.31 |
| 40 | 9.86 | 12.57 | 12.57 |
| 45 | 12.49 | 15.90 | 14.14 |
| 50 | 15.41 | 19.64 | 15.71 |
| 56 | 19.34 | 24.63 | 17.59 |
| 63 | 24.47 | 31.17 | 19.79 |
| 71 | 31.08 | 39.59 | 22.31 |
| 80 | 39.46 | 50.27 | 25.13 |
FAQs About 708M40 Round Bar
Q1: What is 708M40 Round Bar?
A1: 708M40 Round Bar is a chromium-molybdenum alloy steel bar known for its high tensile strength, toughness, and wear resistance. It is equivalent to AISI 4140 and DIN 42CrMo4 grades.
Q2: What are the applications of 708M40 Round Bar?
A2: SCM440 Round Bars are used for manufacturing gears, shafts, crankshafts, bolts, connecting rods, and heavy-duty machinery components requiring high strength and fatigue resistance.
Q3: What are the equivalent grades of 708M40 Round Bar?
A3: Equivalent grades include AISI 4140, SAE 4140, EN19, DIN 42CrMo4, 1.7225, and BS 708M40, which share similar chemical and mechanical properties.
Q4: Does Super Metal Manufacturing Co. export 708M40 Round Bars globally?
A4: Yes, Super Metal Manufacturing Co. exports 708M40 Round Bars worldwide with complete certification, packaging, and fast delivery options.
Q5: Can 708M40 Round Bars be heat-treated?
A5: Yes, 708M40 Round Bars can be heat-treated through quenching and tempering to enhance hardness, strength, and wear resistance based on application needs.
Application of AISI Alloy Steel 708M40 Round Bars
ASTM alloy 4140 steel bar, flat or plate material can be used for as wide variety of applications where greater toughness and wear resistance is needed over lower carbon grades. Typical applications for 4140 tool steel uses include Components, Adapters, Arbors,strippers, holder blocks, mold bases, ejectors, back up and support tooling, fixtures, jigs, molds, cams, drill collars, Axle Shafts, Bolts, Crankshafts,stubs, couplings, reamer bodies, axles, shafting, piston rods, rams, hydraulic machinery shafts, gears, sprockets, gear racks, chain links, spindles, tool bodies, tool holders, tie rods, Connection Rods, Chuck Bodies, Collets, Conveyor Pins & Rolls, Ejector Pins, Forks, Gears, Guide Rods, Hydraulic Shafts & Parts,Lathe Spindles, Logging Parts, Milling Spindles, Motor Shafts, Nuts, Pinch Bars, Pinions, Pump Shafts,boring bars,tracks, slides, wear strips or parts, forming dies, brake dies, trim dies, bolsters, machinery parts and components, etc.