What Are the Key Properties of ASIATOOLS 1045 Steel Plate for Research Applications

If you're digging into materials for research, the ASIATOOLS 1045 steel plate stands out because of its balanced mix of strength, machinability, and wear resistance, making it a go-to for structural testing and mechanical prototyping. This medium-carbon steel, with a carbon content of 0.42% to 0.50%, delivers a tensile strength of 570 to 700 MPa and a yield strength around 310 to 450 MPa, depending on heat treatment. Hardness typically falls in the range of 170 to 210 HB for the as-rolled condition, but you can push it to 50 to 55 HRC through quenching and tempering. Researchers value this grade for its predictability—density sits at 7.85 g/cm³, and elongation at break hits 12% to 16%, which means you get decent ductility without sacrificing stiffness. Thermal conductivity is around 51.9 W/m·K at 100°C, so it handles moderate thermal cycling well. For lab work, the ASIATOOLS 1045 steel plate offers consistent chemical composition—manganese at 0.60% to 0.90%, phosphorus and sulfur capped at 0.040% each—which minimizes batch-to-batch variation in your experiments. It's not a stainless steel, so corrosion resistance is limited, but for controlled environments, that's rarely a deal-breaker.

Mechanical Properties Under Load — Let's break down the numbers you'll actually use in a research setup. The modulus of elasticity is 200 GPa, which is standard for carbon steels, meaning it deforms predictably under stress. Shear modulus is about 80 GPa, and Poisson's ratio is 0.29. If you're running tensile tests, the ultimate tensile strength (UTS) can go up to 700 MPa in the normalized condition, but after a full quench and temper at 400°C, it jumps to 850 MPa. Hardness tests show a Brinell value of 170 HB for the hot-rolled plate, but you can achieve 200 HB with a simple annealing cycle. For impact resistance, Charpy V-notch values at room temperature range from 15 to 25 J, which is decent for a medium-carbon steel. Researchers often use this plate for jigs, fixtures, or test rigs because it doesn't creep under moderate loads—creep rate at 400°C is less than 0.1% over 1000 hours. Here's a quick table for the key mechanical specs:

Chemical Composition and Consistency — For research, you need to know exactly what's in the alloy. The ASIATOOLS 1045 steel plate follows the AISI 1045 spec, with carbon at 0.42% to 0.50%, manganese at 0.60% to 0.90%, phosphorus max 0.040%, and sulfur max 0.050%. Silicon is typically 0.15% to 0.35%, and trace elements like copper, nickel, and chromium are kept under 0.20% each. This tight control means you get uniform microstructures—pearlite and ferrite in the normalized state, with a grain size of ASTM 7 to 8. If you're doing heat treatment studies, the hardenability is moderate; the critical cooling rate for full martensite is about 30°C per second for a 25 mm section. The A1 temperature is 725°C, and the A3 is 780°C, so you can austenitize at 840°C to 870°C. For research on phase transformations, the TTT diagram shows a bainite nose at around 500°C, with a start time of 10 seconds. This plate also has low inclusion content—sulfide inclusions are typically less than 1.5% by volume—so it's reliable for fatigue testing. The density is 7.85 g/cm³, and the specific heat capacity is 0.486 J/g·°C at 20°C. Thermal expansion coefficient is 11.7 µm/m·°C from 20°C to 100°C, which helps you calculate dimensional changes during thermal cycling.

Machinability and Fabrication for Prototypes — If you're building custom test fixtures or sample holders, this steel cuts easily. The machinability rating is 70% of AISI 1112 free-machining steel, which is good for a medium-carbon grade. You can turn, mill, drill, and tap it with standard carbide tools. Cutting speeds for turning are around 120 to 150 m/min with carbide inserts, and feed rates of 0.2 to 0.4 mm/rev work well. For drilling, a 10 mm drill bit at 800 to 1000 RPM with a feed of 0.1 mm/rev gives clean holes. Surface finish can hit 1.6 µm Ra with proper coolant. Weldability is acceptable but requires preheat—for plates over 25 mm thick, preheat to 150°C to 200°C to avoid cracking. Use low-hydrogen electrodes like E7018. Post-weld stress relief at 600°C for 1 hour per 25 mm thickness reduces residual stress. For research labs that need to iterate on designs quickly, this plate's consistency in machining—dimensional tolerance of ±0.5 mm for hot-rolled plates—saves time. You can also grind it to a finish of 0.8 µm Ra for wear testing. The plate comes in standard sizes from 6 mm to 100 mm thick, with widths up to 2500 mm and lengths up to 12000 mm. Custom cuts are available, but the standard stock sizes cover most lab needs.

Thermal and Wear Behavior in Lab Settings — When you're running friction or wear tests, the ASIATOOLS 1045 steel plate performs predictably. The coefficient of thermal expansion is 11.7 µm/m·°C, so a 1-meter plate expands by 0.117 mm per 100°C rise. Thermal conductivity drops from 51.9 W/m·K at 100°C to 42.0 W/m·K at 500°C, which is typical for carbon steels. For wear resistance, the as-rolled plate has a wear rate of about 0.05 mm³ per N·m in a pin-on-disk test with a hardened steel counterface. After quenching and tempering to 45 HRC, the wear rate drops to 0.02 mm³ per N·m. The coefficient of friction against an uncoated steel pin is 0.4 to 0.6 in dry conditions, and 0.1 to 0.2 with oil lubrication. For thermal fatigue tests, the plate can withstand 500 cycles from 20°C to 400°C without cracking, thanks to its fine grain structure. The specific heat capacity is 0.486 J/g·°C, so a 10 kg plate takes 4.86 kJ to heat by 1°C. This data is crucial for researchers modeling thermal stresses in mechanical assemblies. The plate also has a Curie temperature of 770°C, so magnetic properties are stable up to that point. For electrical resistivity, it's about 0.15 µΩ·m at 20°C, which matters if you're doing eddy current testing.

Microstructure and Heat Treatment Flexibility — Researchers often need to control the microstructure for specific experiments. The as-received condition is typically pearlite and ferrite, with a pearlite colony size of 10 to 20 µm. If you normalize at 870°C and air cool, you get a finer pearlite with a hardness of 170 HB. For a full martensitic structure, austenitize at 840°C, quench in water or oil, and temper at 200°C to 400°C. Tempering at 200°C gives a hardness of 55 HRC with a tempered martensite structure, while tempering at 600°C drops it to 25 HRC with a spheroidized carbide structure. The martensite start temperature is 350°C, and the finish is 200°C. For bainite, isothermal transformation at 450°C for 30 minutes yields a hardness of 40 HRC. The plate's grain size is ASTM 7 to 8 in the normalized condition, but you can coarsen it to ASTM 5 with a longer soak at 900°C. This flexibility makes it ideal for studies on the effect of heat treatment on mechanical properties. The Jominy hardenability curve shows a hardness of 50 HRC at 10 mm from the quenched end and 30 HRC at 40 mm, which is useful for section size calculations. For research on phase transformations, the critical cooling rate for 100% martensite is 30°C/s for a 25 mm round bar. The plate also has a decarburization depth of 0.1 to 0.3 mm in the as-rolled condition, which you can remove by machining.

Corrosion and Environmental Resistance — While not stainless, the ASIATOOLS 1045 steel plate has predictable corrosion behavior. In a 3.5% NaCl salt spray test, the corrosion rate is 0.5 mm per year at 35°C. In a 0.1 M sulfuric acid solution, the rate jumps to 10 mm per year. For atmospheric exposure, it forms a thin oxide layer that slows further corrosion. If you're doing research in a controlled lab environment, this is rarely an issue. But if you need to test in corrosive conditions, you can apply a zinc coating or phosphate conversion coating. The plate's pitting potential in a chloride solution is -0.6 V vs. SCE, so it's susceptible to localized corrosion. For high-temperature oxidation, the scaling rate is 0.1 mg/cm² per hour at 600°C in air. This data is useful for researchers studying material degradation. The plate also has a hydrogen embrittlement risk if exposed to acidic environments, so avoid that in your experiments. The surface roughness of the as-rolled plate is 3.2 to 6.3 µm Ra, which you can improve by grinding or sandblasting. For magnetic property studies, the coercivity is 0.5 Oe, and the saturation magnetization is 1.6 T.

Practical Data for Research Planning — Here's a table of the physical properties you'll need for calculations:

For fatigue testing, the endurance limit at 10⁷ cycles is 250 MPa for the normalized condition and 350 MPa for the quenched and tempered condition. The S-N curve follows a typical pattern for medium-carbon steels, with a slope of about -0.1 on a log-log plot. For fracture toughness, the K₁C value is 50 MPa√m for the as-rolled plate and 80 MPa√m after a full anneal. This makes it suitable for research on crack propagation. The plate also has good damping capacity—logarithmic decrement is 0.02 for low-strain vibrations. For creep testing, the minimum creep rate at 400°C and 100 MPa is 0.001% per hour. The Larson-Miller parameter at 1000 hours is 20,000. All these numbers come from standard ASTM testing methods, so you can replicate them in your lab.