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[China]
Trade Verify
Address: No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
Contact name:Gao
JIANGSU MITTEL STEEL INDUSTRIAL LIMITED |
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Verified Suppliers
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Products Specification
| Products Name | AISI4140 Alloy Steel Round Bar |
| Diameter | 10 - 350 mm |
| Length | 6m or custom cutting any length as request |
| Type | Hot Rolled |
| Brand | BAOSTEEL DELTA DONGBEI HUAXI SHAGANG.etc |
| MOQ | 1 Ton |
| Loading Port | Shanghai Port |
| Packing | packing by steel wire rope |
| Deliver time | 5 - 7 days for stock materials |
| Other Grade | Q195,Q235,10#,20#,35#,45#,Q215,Q345,12Cr1Mov,15CrMo,304,3 16,20Cr,40Cr,20CrMo,35CrMo,42CrMo,40CrNiMo,GCr15,65Mn,50Mn, 50Cr,3Cr2W8V,20CrMnTi,5CrMnMo |
| Standard | ASTM GB EN DIN |
| Application | Structure and Industrial |
Regular Standard Size of our Round Bar in Stock
| Standard Diameter | 10 12 15 18 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 120 130 140 150 160 180 200 210 220 230 250 270 300 320 330 350 |
Cromdane Steel, Inc. distributes quality AISI 4140 alloy steel forged bar and forgings. Our inventory is controlled within our API Q1 and ISO 9001:2015 certified Quality Management Systems requirements and is available for immediate saw, cut and delivery.
We meet stringent customer specifications with short lead times and quick turnarounds.
AISI/SAE 4140 alloy steel is a chrome molybdenum series low alloy steel. AISI 4140 has high strength, hardenability, good toughness, small deformation during quenching, high creep strength and long-lasting strength at temperature. AISI 4140 alloy steel bar has a higher carbon content than AISI 4130 therefor it has greater strength and heat treatment capabilities.
4140 alloy steel forged bar has many uses in the aerospace, oil and gas and automotive industries. It is commonly used in downhole tools.
4140 steel contains both chromium (Cr) and molybdenum (Mo). The amount of these elements in the alloy varies depending on the grade of 4140 steel being used. For example, Grade AISI 4140 contains 0.38-0.43% Cr and 0.15-0.25% Mo while Grade AISI 4150 contains 0.47-0.53% Cr and 0.20-0.30% Mo. The addition of other elements, such as manganese, can also alter the composition of 4140 steel depending on the grade being used.
| Element | Content (%) |
|---|---|
| Chromium, Cr | 0.80 – 1.10 |
| Manganese, Mn | 0.75 – 1.0 |
| Carbon, C | 0.380 – 0.430 |
| Silicon, Si | 0.15 – 0.30 |
| Molybdenum, Mo | 0.15 – 0.25 |
| Sulfur, S | 0.040 |
| Phosphorous, P | 0.035 |
| Iron, Fe | Balance |
SAE 4140 steel is a chromium-molybdenum alloy beloved by many metalworkers because of its versatility and malleability. Due to its impressive chemical properties, it has been used in applications ranging from shipbuilding to the manufacture of tools. 4140 Steel has excellent strength, toughness, and hardenability values, especially when tempering and quenching are employed for further processing. Additionally, it is highly corrosion-resistant and has a large amount of wear resistance as well. This makes it ideal for uses like shafts, gears, bolts, and other parts subject to mechanical stress. As a result of all these qualities, 4140 Steel remains one of the most popular materials for metalworking today – and it doesn’t look like that popularity will be waning anytime soon!
The chemical and physical properties vary depending on the grade being used; however, some common characteristics are high strength (up to 1600MPa), high wear resistance (due to its high abrasion resistance), good ductility and toughness (due to its low carbon content), high fatigue strength (due to its quenching process), good creep strength (at elevated temperatures), good corrosion resistance (due to its chromium content) and good weldability (due to its low carbon content).
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cm3 | 0.284 lb/in³ |
| Melting point | 1416°C | 2580°F |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 655 MPa | 95000 psi |
| Yield strength | 415 MPa | 60200 psi |
| Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 25.70% | 25.70% |
| Hardness, Brinell | 197 | 197 |
| Hardness, Knoop (converted from Brinell hardness) | 219 | 219 |
| Hardness, Rockwell B (converted from Brinell hardness) | 92 | 92 |
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only) | 13 | 13 |
| Hardness, Vickers (converted from Brinell hardness) | 207 | 207 |
| Machinability (based on AISI 1212 as 100 machinability) | 65 | 65 |
| Properties | Metric | Imperial |
|---|---|---|
| Thermal expansion coefficient (@ 0-100°C/32-212°F) | 12.2 µm/m°C | 6.78 µin/in°F |
| Thermal conductivity (@ 100°C) | 42.6 W/mK | 296 BTU in/hr.ft².°F |
| AMS 6349 | ASTM A193 (B7, B7M) | ASTM A506 (4140) | ASTM A752 (4140) |
| AMS 6381 | ASTM A194 (7, 7M) | ASTM A513 | ASTM A829 |
| AMS 6382 | ASTM A29 (4140) | ASTM A513 (4140) | SAE J1397 (4140) |
| AMS 6390 | ASTM A320 (L7, L7M, L7D) | ASTM A519 (4140) | SAE J404 (4140) |
| AMS 6395 | ASTM A322 (4140) | ASTM A646 (4140) | SAE J412 (4140) |
| AMS 6529 | ASTM A331 (4140) | ASTM A711 |
Due to its versatility, 4140 steel has many uses across various industries, including automotive components such as gears shafts, axles, pistons, and valves ; construction materials such as bolts, nuts, screws; tools such as chisels, punches, taps etc.; sporting goods such as golf clubs; agricultural equipment such as plows; oil rigs etc.
