Sichuan Liaofu Special Steel Company is one of the most experienced manufacturers and suppliers of astm a108 aisi 1045 hot rolled steel bar in China. With over 20 years' experience, our factory offer high quality products made in China with competitive price. Welcome to contact us for wholesale service.
ASTM A108 AISI 1045 Hot Rolled Steel Bar
ASTM A108 AISI 1045 Hot rolled steel rod is a high quality high carbon steel material that is widely used in the manufacture of machine parts, axles, gears, bearings, etc. The steel has excellent mechanical properties and wear resistance. After hot rolling, the surface is smooth, without cracks and pores, and the quality is stable and reliable.
The chemical composition of ASTM A108 AISI 1045 hot-rolled steel rod is strictly controlled, its carbon content is between 0.43% and 0.5%, and harmful elements such as sulfur and phosphorus are lower than the requirements of ASTM standards. In the hot rolling process of this high carbon steel material, the heating temperature needs to be controlled to ensure that the organizational structure and properties of the material reach the best state.
ASTM A108 1045 Grade steel Chemical Composition
| Carbon | 0.43-0.50 |
| Manganese | 0.60-0.90 |
| Phosphorus (max) | 0.040 |
| Sulfur (max) | 0.050 |
Estimated Mechanical Property Ranges for ASTM A108 Grade 1045
| Tensile strength (psi) | 85,000 - 95,000 |
| Yield strength (psi) | 45,000 - 55,000 |
| Elongation in 2" (%) | 15 - 20 |
| Reduction of area (%) | 30 - 40 |
| Brinell Hardness (BHN) | 170 - 200 |
Eaton Steel Bar Company can meet the following specifications for this grade:
- ASTM A108
- ASTM A576
- JDM QL-2 certified
| Product Name | 1045 Carbon Structural Steel 45# High strength steel round bars |
| ASTM A108 1045 Grade steel | |
| Grade | Q195,Q235,10#,20#,35#,45#,Q215,Q345,12Cr1Mov,15CrMo,20Cr,40Cr,20CrMo,35CrMo,42CrMo,40CrNiMo, GCr15,65Mn,50Mn,50Cr,3Cr2W8V,20CrMnTi,5CrMnMo |
| Process | Hot Rolled/Cold Drawn/Forging |
| Diameter | 5.5-250mm |
| Surface Treatment | Varnishing,Black,Polished,Antiseptical,Oiled,Galvanized,Copper Coated |
| Standard | ASME, ASTM, EN ,BS,GB,DIN, JIS etc |
| Production Process | Hot rolling/Cold rolling |
| Packaging | 1. cases packed in wooden cases 2. paper packaging 3. plastic packing 4. foam packaging Packaging according to customer requirements or products |
| Delivery | 7-25days orAccording to the product |
| Payment | L/C,D/A,D/P,T/T,Western Union,MoneyGram,According to customer requirements payments for offline orders. |
| Port | Shanghai,Ningbo,Shenzhen,Tianjing,Xianggang,Xiamen,Fuzhou, Etc.. |
Core Trends of ASTM A108/AISI 1045 Hot-Rolled Steel Bars (Hot-Rolled Section Steel Industry) in 2025
I. Market Demand: Steady Growth with Slowing Momentum
- Demand Drivers: Continued strength in infrastructure investment (rail transit, high-speed railways, and bridges).
- Demand Support: Stable growth in the machinery manufacturing and automotive industries.
- Growth Constraint: Slower growth in construction steel demand due to real estate regulations.
II. Industry Structure: Further Concentration
- Leading Enterprises: Expanding their scale through mergers and acquisitions.
- Small and Medium-sized Steel Enterprises: Facing elimination risks and requiring accelerated transformation.
III. Product Structure: Prominent Demand for High-End Products
- Traditional Products: Saturated demand for high-carbon steel bars.
- Popular Products: Rapidly growing demand for medium- and low-carbon as well as alloy steel bars.
- Target Products: Steady growth expected for ASTM A108/AISI 1045 steel bars.
IV. Development Direction: Deepened Green and Low-Carbon Transition
- Low-Carbon Technology: Promotion of hydrogen-based direct reduction iron (DRI).
- Resource Utilization: Improved recycling rates of scrap steel.
- Core Goal: Reduction of carbon emissions.
V. Production Upgrade: Accelerated Digitalization and Intelligence
- Production Line Construction: Advancement of automation and intelligent transformation.
- Technology Application: Implementation of predictive maintenance and big-data-driven production optimization.
VI. Price Trend: Potential for Upside
- Basic Trend: Slight overall decline with limited downside potential.
- Positive Drivers: Policy support and low inventory levels may contribute to unexpected price strength.
FAQ
Q: What is the minimum order quantity for 1045 hot-rolled steel bar, and can I order a small quantity for a trial?
A: We can cut from stock for trial orders. For standard diameters, even one bar is possible. For custom sizes or cold-drawn material, the minimum is usually 500 kg to 1 ton. Tell us your required diameter and length, and we will confirm the smallest practical order.
Q: Can you cut the bars to specific lengths, and what is the length tolerance?
A: Yes, we cut to your required length. Standard tolerance is +5/-0 mm. For precision cutting, we can hold tighter if needed. Deburring is included. Please include your length and quantity in the inquiry.
Q: Do you provide material certification and third-party inspection?
A: Yes, mill test certificates are provided with every shipment. If you need SGS, BV, or other third-party inspection, we can arrange it at your cost. Please tell us the standard and scope before shipment.
Q: What is the recommended heat treatment for 1045 steel if I need higher hardness?
A: 1045 can be quenched and tempered. Austenitize at 820–850°C, quench in water or oil depending on section size, then temper at 400–600°C to achieve the desired hardness. For small sections, water quench may crack, so oil is safer. We can share reference data from the mill.
Q: Is 1045 steel weldable, and what filler should I use?
A: 1045 is weldable but requires preheat and post-weld heat treatment, especially for thick sections. Use low-hydrogen electrodes like E7018. Preheat to 200–300°C, and temper after welding to avoid cracking. For critical parts, consider 4140 or a lower-carbon steel instead.
Q: Can you supply 1045 in cold-drawn condition for better surface finish and tolerance?
A: Yes, we can supply cold-drawn 1045 bars. They have tighter dimensional tolerance, smoother surface, and better machinability. Cold drawing also increases yield strength. Tell us your required diameter and tolerance, and we will quote both hot-rolled and cold-drawn options.
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