| After-sales Service: | One-Stop Service |
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| Warranty: | One Year |
| Type: | Alloy Steel Bar |
| Standard: | AISI |
| Technique: | Hot Rolled |
| Application: | Structural Steel Bar, Buildings |
| Customization: |
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Suppliers with verified business licenses
Audited Supplier |
Size
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Dia 10mm~800mm
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Technique
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Hot Rolled
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Process
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EAF+LF+VD+ Forged/Hot rolled + Heat Treatment (Annealed,A Normalized, Q+T)
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Heat treatment
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Normalized ; Annealed ; Quenched ; tempered
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Surface Condition
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Black surface ; Grinded ; Machined;Turned
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Inspection
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100% Ultrasonic according to the test standards:SEP1921-84,CLASS C/c or D/d
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Payment Terms
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T/T;L/C
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Trade Terms
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FOB;CIF,CFR
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Packing
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Standard seaworthy packing or as customer required
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Application
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Typical applications for are forging dies, forging die inserts, hot gripper dies, hot nut tools, hot header dies, brass forging
and pressing dies, aluminum base dies, aluminum casting and extrusion dies, zinc die casting dies, extrusion mandrels, plastic molds, cores, die holder blocks, hot press dies, hot work punches, etc. |
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-Dimension: Diameter4-1600mm, length below 16m
-Delivery Conditions
Cold drawn 4-100mm
Hot rolled 12-320mm
Hot forged 130-1600mm
Peeled: 30-160mm
Grind: 4-600mm
Turned: 130-1200mm
-Surface: Black, smooth, turned, peeled, grind, polished, oiled and painted surface or other anti-corrosive treatment per customers' requests
-End: Beveled, plain end, vanished or plastic caps can be provided if necessary
APPLICATION OF AISI ALLOY ROUND 4140 STEEL BAR
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.
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Item
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C
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Si
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Mn
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P
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S
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Cr
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Ni
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Mo
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Cu
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4140
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0.38-0.45
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0.17-0.37
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0.50-0.80
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≤0.035
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≤0.035
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0.9-1.20
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≤0.30
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0.15-0.25
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≤0.30
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Item
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Tensile Strength
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Yield Strength
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Elongation
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Reduction of Area
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Akv
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Hardness after Hardened(HB)
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4140
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≥1080MPa
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≥930MPa
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≥12%
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≥45%
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≥63 J
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≤217
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MECHANICAL PROPERTIES OF AISI ALLOY 4140 STEEL BAR
| 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 |
20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)
40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)
40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High)
20feet container load 25tons coils whose length is under 5.8m
40feet container load 25tons coils whose length is under 11.8m
Delivery Details : Use trays to facilitate loading and unloading
Standard Export Seaworthy Package.Suit for all kinds of transport,or as required
1. More than 10 years Professional steel export service. Have own production line.
2. Advanced CNC machine.
3. Low cost&Quick Delivery&High quality.
4. Integrity, strength and quality of products recognized by the industry.
5. Most of our clients are international, the domestic well-known enterprises.
6. Has a complete scientific quality management system.
7. Can meet any requirements for all kinds of sheet metal processing with advanced equipment.
Q1: How can I get a sample to check your metal work quality?
Answer: After price confirmation, you can require for samples to check our quality. We will provide you sample for free (value under USD35), as long as you afford the express freight.
Q2: How long can I expect to get the metal work sample?
Answer: After you pay the sample charges(if there is) and send us confirmed drawings, the sample will be ready for delivery in 5-7 working days. The samples will be sent to you via DHL, FedEx,UPS,TNT or EMS. It should arrive in 3-5 workdays. You can use your own express account or prepay us if you don't have any account.
Q3: What about the leading time for metal work mass production?
Answer: Honestly, it depends on the order quantity. Normally, 15 workdays to 30 workdays after your deposit if no the samples are confirmed.
Q4: What will we do if the metal work quality is not ok ?
Answer: If the quality problem is caused by our mistake, we will make replacement order for free or pay the back product charge and handling charge back to you.
More questions, please send the email to us
Suppliers with verified business licenses
Audited Supplier 
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