Super Metal Manufacturing Co. has earned a strong reputation as a reliable exporter of SAE 4140 Round Bars worldwide. Our products are highly demanded across markets for their consistency, durability, and precision. Whether you require 4140 Forged Round Bars, 42CrMo4 Alloy Steel Round Bars, or Chromoly Steel Round Bars, we can deliver materials that perform efficiently under demanding working conditions.
Material Specification Chart of SAE 4140 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 |
Our Cr-Mo Steel Round Bars are extensively used in the manufacturing of gears, shafts, axles, crankshafts, couplings, and fasteners. These bars exhibit superior fatigue resistance, making them ideal for high-stress mechanical components. We also provide value-added services like cutting, heat treatment, and surface finishing to deliver ready-to-use materials that match specific project requirements.
At Super Metal Manufacturing Co., quality assurance is at the heart of our operations. Every SAE 4140 Round Bar undergoes rigorous testing to ensure high performance, long service life, and dimensional stability. Our continuous commitment to excellence and customer satisfaction makes us one of the most trusted suppliers and exporters in the alloy steel industry.
Choose Super Metal Manufacturing Co. for reliable supply of SAE 4140 Round Bars and equivalent grades such as EN19 Round Bar, 1.7225 Round Bar, and UNS G41400 Round Bar. With our global reach, competitive pricing, and technical expertise, we continue to be a preferred partner for industries requiring superior-quality alloy steel products.
Alloy Steel SAE 4140 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 SAE 4140 Round Bar
Q1: What is SAE 4140 Round Bar?
A1: SAE 4140 Round Bar is a chromium-molybdenum alloy steel bar known for its high strength, toughness, and fatigue resistance. It is used in heavy-duty engineering and automotive applications.
Q2: What are the equivalent grades of SAE 4140 Round Bar?
A2: The equivalent grades include AISI 4140, EN19, DIN 42CrMo4, JIS SCM440, and BS 708M40. These grades share similar chemical compositions and mechanical characteristics.
Q3: What industries commonly use SAE 4140 Round Bars?
A3: SAE 4140 Round Bars are used in automotive, oil & gas, machinery, aerospace, and defense industries for manufacturing high-stress components such as shafts, gears, and crankshafts.
Q4: Does Super Metal Manufacturing Co. export SAE 4140 Round Bars globally?
A4: Yes, Super Metal Manufacturing Co. exports SAE 4140 Round Bars to multiple countries worldwide, ensuring timely delivery, customized packaging, and international quality standards.
Q5: Can SAE 4140 Round Bars be heat-treated?
A5: Absolutely. SAE 4140 Round Bars can be heat-treated through quenching and tempering processes to enhance their strength, hardness, and wear resistance for demanding applications.
Application of AISI Alloy Steel SAE 4140 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.