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.
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