| 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, Tool Steel Bar |
| Customization: |
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Suppliers with verified business licenses
Audited Supplier | 1. | Production Name | Alloy Steel Round Bar |
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Standard |
AISI,ASTM,JIS,DIN,EN,GB,GOST. |
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Material |
C10,S10C,AISI1010,EN1.1121,C15,S15C,C20,S20C,AISI1020,C22, C25,S25C,C30,S30C,AISI1030,C35,S35C,AISI1035,EN1.0401,S40, S40C,AISI1040,C45,S45C,AISI1045,EN1.1191,C50,S50C,AISI1050, C55,S55C,AISI1055,EN1.1203,C60,S60C,AISI1060,20Mn,AISI1022, 25Mn,AISI1026,30Mn,AISI1033,40Mn,AISI103950Mn,AISI1053, 30Mn2,AISI1330M35Mn2,AISI1335,40Mn2,AISI1345,15Cr,AISI5115, 17Cr3,20Cr,30Cr,34Cr4,37Cr4,40Cr,AISI5140,41Cr4,EN1.7035, AISI5145,AISI5147,15CrMo,20CrMo,AISI4118,30CrMo,AISI4130, 35CrMo,AISI4135,42CrMo,AISI4140,AISI4142,42CrMo4,EN1.7225, AISI3410,30CrNi3,ST52-3,A283 Gr.A,A283 Gr.B,EN1.0035,SS400, SM400A,A283Gr.C,S235JO,EN1.0114,S235JR,EN1.0038,S235J2, EN1.0017,SS490,SS5410,A572 Gr.50,A572 Gr.60,A572 Gr.65, A572Gr.70,A572,GR.80,S355JO,SM570,E335,EN1.0060,S235J2W, Q345,Q345B,etc. |
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Specifications
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Diameter |
Φ10~Φ812mm,or as required. |
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Length |
2m,3m,5.8m,6m,8m,12m, or as required. |
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Surface |
Polished, Black, Grinding or as demand | |
-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.
COMMON 4140 STEEL EQUIVALENCY
| Country | USA | German | British | Japan | China | Australia |
| Standard | ASTM A29 | DIN 17200 | BS 970 | JIS G4105 | GB/T 3077 | AS 1444 |
| Grades | 4140 | 1.7225/ 42crmo4 |
42CrMo4 | SCM440 | 42CrMo | 4140 |
4140 STEEL BAR CHEMICAL COMPOSITION
| Standard | Grade | C | Mn | P | S | Si | Cr | Mo |
| ASTM A29 | 4140 | 0.38-0.43 | 0.75-1.00 | 0.035 | 0.040 | 0.15-0.35 | 0.8-1.10 | 0.15-0.25 |
| EN 10250 | 42CrMo4/ 1.7224 |
0.38-0.45 | 0.6-0.9 | 0.035 | 0.035 | 0.4 | 0.9-1.2 | 0.15-0.30 |
| JIS G4105 | SCM440 | 0.38-0.43 | 0.60-0.85 | 0.03 | 0.03 | 0.15-0.35 | 0.9-1.2 | 0.15-0.30 |
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 |
Package:
Normal Packing:In Bundles or In Bulks or seaworthy package Special Packing:according to customers' requirements.
Pipe End:Plain\Beveled\Thread with Coupling or cap.
Shipment:
a.length:≤5.8m loaded in 20FT Container with 25-27tons
b.length:≤11.8m loaded in 40FT Container with 25-27tons
Trade Terms: FOB / CIF / CFR
Payment Terms: L\C T\T
Loading Port: Tianjin or Shanghai port ,China
Delivery: within 15 days after received the 30% deposit of T/T.
We can produce special specification of the galvanized steel pipe products according to your requirement.
Application
Forging
Preheat the steel carefully, heat to 1150 oC - 1200 oC maximum, hold until temperature is uniform throughout the section.
Do not forge below 850 oC.Following forging operation the work piece should be cooled as slowly as possible.
AISI 4140 Steel Grade Heat Treatment
Hardening of AISI Alloy Steel 4140
AISI alloy 4140 steel bar, plate and square can be hardened by cold working, or heating and quenching.
SAE 4140 alloy steel is usually supplied ready heat treated to hardness in 18-22 HRC. If further heat treatment is required, then heat to 840 oC - 875 oC, hold until temperature is uniform throughout the section, soak for 10 - 15 minutes per 25 mm section, and quench in oil, water, or polymer as required.
OUR OTHER PRODUCTS ARE LISTED BELOW
Pre-sale Service:
1.Good quality + Factory price + Quick response + Reliable service
2.100% responsible for the quality:all the products are produced by our professional workman and we have a high-work-effect foreigh trade team.
3.We have enough stock and can deliver in short time.
4.Customized designs,colors,sizes and logos are welcome,responsiveness to customers' requirements.
After-sale Service:
1.We will count cheapest shipping cost and make invoice to you at once.
2.On time delivery.
3.Provide real pictures of loading container,email you the tracking NO. and help to chase the products until the goods arrive you.
4.24 hours online service,if any question,please contact us at anytime in your convenience.
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.
Suppliers with verified business licenses
Audited Supplier 
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