Hot Forged Steel Round Bars AISI 4140, 4340, 1045 Diameter 100mm-1200mm High-Strength Alloy & Carbon Steel Forgings
Product Detail
| Item | Details |
|---|---|
| Product Name | AISI 4140 / 4340 / 1045 Hot Forged Steel Round Bar |
| Material Standard | AISI / SAE Alloy & Carbon Steel |
| Product Type | Hot Forged Round Bar (Square / Flat on request) |
| Chemical Composition | 1045: C 0.43–0.50%; Mn 0.60–0.90% 4140: C 0.38–0.43%; Cr 0.80–1.10%; Mo 0.15–0.25% 4340: C 0.38–0.43%; Ni 1.65–2.00%; Cr 0.70–0.90%; Mo 0.20–0.30% |
| Yield Strength | 1045: ≥ 310 MPa 4140: ≥ 415 MPa 4340: ≥ 470 MPa (Q&T) |
| Tensile Strength | 1045: ≥ 585 MPa 4140: ≥ 850 MPa 4340: ≥ 930 MPa |
| Elongation | ≥ 16–20% (depending on grade & heat treatment) |
| Available Sizes | Diameter: 20–600 mm; Length: 6 m, 12 m, or cut-to-length |
| Surface Condition | Black / Machined / Peeled / Polished |
| Heat Treatment | Annealed, Normalized, Quenched & Tempered |
| Processing Services | Cutting, rough machining, turning, drilling |
| Applications | Shafts, gears, axles, hydraulic parts, oil & gas tools, heavy machinery components |
| Advantages | High strength, dense structure, excellent toughness, reliable fatigue performance |
| Quality Control | Mill Test Certificate (EN 10204 3.1); ISO 9001 certified |
| Packing | Steel-strapped bundles or wooden cases, export seaworthy packing |
| Delivery Time | 10–20 days depending on size and quantity |
| Payment Terms | T/T: 30% advance + 70% balance |
AISI 4140 4340 1045 Round Steel Bar Size
| Diameter (mm / in) | Length (m / ft) | Weight per Meter (kg/m) | Approx. Load Capacity (kg) | Notes |
|---|---|---|---|---|
| 20 mm / 0.79 in | 6 m / 20 ft | 2.47 kg/m | 1,200–1,500 | AISI 1045 / 4140, light-duty shafts |
| 25 mm / 0.98 in | 6 m / 20 ft | 3.85 kg/m | 1,800–2,200 | Good machinability, general mechanical parts |
| 30 mm / 1.18 in | 6 m / 20 ft | 5.55 kg/m | 2,500–3,000 | AISI 4140 forged, transmission components |
| 32 mm / 1.26 in | 6–12 m / 20–40 ft | 6.31 kg/m | 3,000–3,600 | Medium-load structural & machinery use |
| 40 mm / 1.57 in | 6 m / 20 ft | 9.87 kg/m | 4,500–5,500 | AISI 4140 Q&T, axles & hydraulic rods |
| 50 mm / 1.97 in | 6–12 m / 20–40 ft | 15.42 kg/m | 6,500–8,000 | AISI 4340 forged, high-stress components |
| 60 mm / 2.36 in | 6–12 m / 20–40 ft | 22.20 kg/m | 9,000–11,000 | Heavy-duty shafts, oil & gas tools |
AISI 4140 4340 1045 Round Steel Bar Customized Content
| Customization Category | Options | Description / Notes |
|---|---|---|
| Dimensions | Diameter, Length | Diameter: Ø20–Ø300 mm; Length: 6 m / 12 m or cut-to-length |
| Processing | Cutting, Threading, Machining, Drilling | Bars can be cut, threaded, drilled, or CNC-machined according to drawings or application needs |
| Heat Treatment | Annealed, Normalized, Quenched & Tempered (Q&T) | Heat treatment selected based on strength, toughness, and service conditions |
| Surface Condition | Black, Turned, Peeled, Polished | Surface finish chosen based on machining accuracy and appearance requirements |
| Straightness & Tolerance | Standard / Precision | Controlled straightness and tight dimensional tolerances available upon request |
| Marking & Packaging | Custom Labels, Heat No., Export Packing | Labels include size, AISI grade (1045 / 4140 / 4340), heat number; packed in steel-strapped bundles or wooden cases for safe export shipment |
Surface Finish
Carbon Steel Surface
Galvanized Surfce
Painted Surface
Application
1.Construction Are Facilities
It is also variously applied as reinforcement in concrete in houses and skyscrapers, bridges and expressways.
2.Method of production
Machines and parts with excellent machinability and strength in the durability.
3.Automotive
Production of automotive parts (axles and shafts) and chassis elements.
4.Agricultural Tools
Agricultural machinery and implements manufacture, developed from their formability and strength.
5.General Fabrication
It may also be attached to gates, fences and rails in addition to serving as various structural configurations.
6.DIY Projects
A great pick for your DIY projects, perfect for making furniture, crafts and small buildings.
7.Tool Making
To make hand tools, the tools that make tools, and the machinery of commerce.
Our Advantages
1.Tailor-made Dimensions
The diameter, length, surface treatment and type of bearing can be customized according to your requirements.
2.Protection
From rust and weather Smoked or pickled finishes can be used indoors, outdoors, and in marine applications; hot-dip galvanizing and painting are optional.
3.Stable Quality Assurance
Manufactured under ISO 9001 system and full Test Reports (TR) are submitted for traceability.
4.Secure Packing & Prompt
Delivery The bars are bundled tightly or protective covers optional and then shipped by container, flat rack or truck. whether they got kpo from the consumer of the kpo from us. Typical lead time is 7–15 days.
*Send the email to [email protected] to get a quotation for your projects
Packaging & Shipping
Standard Packing:Steel bars are tightly banded to avoid any moving or rusting among them. Wood or blocks supports are used to increase stability for long distance shipment.
Custom Packaging: The labels can be printed with information such as steel grade, diameter, length, batch number, and project information, making it convenient for identification. Palletizing or wrapping protection is available against special mailing instructions requirements of sensitive surface.
Shipping Options: Orders are shipped by container, flat rack, or local trucking as the size and destination of order dictates. Full or less than full truckload are available for smooth movement of logistics.
Handling & Safety: Packaging allows for safe lifting, loading and unloading at the job site. Rea Dy For Both Domes tie & International Transportation Bran Exporta ble Protection.
Lead Time: Expected delivery time is 7 – 15 days each order, expedited turnaround time is available for massive or repeat order.
FAQ
Q1: What are the AISI Hot Forged Steel Round Bars raw material?
A: Our solid round bars are made from AISI 1045, 4140 or 4340 alloy steel, high strength, good toughness and good machinability, applicable for high working condition.
Q2: Are AISI Steel Round Bars custom made?
A: Yes Diameter, length, surface condition, heat treatment and mechanical properties can be customized as per your project requirement.
Q3: What are the surface & heat treatment options ?
A: Surface finishes include black, peeled, turned or polished. Heat treatment conditions Anneal Normalized Quenched and tempered, as the working conditions.
Q4: What applications are typically used for the AISI Hot Forged Steel Round Bars?
A: They are also employed as machined parts, shafts or gears in the aviation, automotive, energy, forging and heavy industrial sectors.
Q5: How to pack and deliver AISI Hot Forged Steel Round Bar?
A: Bars are tightly bundled, with optional palletizing or protective covering, and shipped by container, flat rack, or local truck. Mill Test Certificates(MTC) are supplied for full traceability.
