What is metal strength?
Metal strength refers to the ability of a metal material to resist external forces without damage. It is one of the important indicators to measure the performance of metal materials. Common metal strength indicators include yield strength, tensile strength, compressive strength, fatigue strength, etc.
Basic definition of metal strength
- Yield strength of metals: The stress at which a metal material begins to undergo significant plastic deformation.
- Tensile strength of metals: The maximum stress a metal material can withstand before it breaks. This is usually reflected by metal tensile strength chart.
- Fatigue strength of metals: The maximum stress that a material can undergo without damage after a certain number of cycles under the action of cyclic stress.
- Hardness of metals chart: A material’s ability to resist local plastic deformation, indentation or scratches.
- Impact toughness metals by strength: The ability of a material to absorb energy and resist fracture under impact loads.
Metal Strength Chart
Among many material strength charts, steel and iron have attracted much attention due to their wide range of applications. In order to more clearly show the performance of steel and iron in terms of strength performance, and to facilitate comparison with other common metals, we have listed the following strength test indicators for various metals including stainless steel and iron. Through these indicators, we can gain in-depth insight into the unique mechanical properties of steel, iron and other metals, and provide a reliable reference for the rational selection and effective application of materials. What metal has the highest tensile strength? Here is a metal strength chart:
| Metal Strength MeasureMetals | Iron Steel | Aluminium Alloy | Copper Alloy | Titanium Alloy | Magnesium Alloy |
| Limit Of Elasticity（MPa） | 200-2000 | 70-500 | 100-1200 | 700-1200 | 100-200 |
| Yield Strength（MPa） | 200-1000 | 50-500 | 150-1000 | 400-1000 | 60-300 |
| Strength Of Extension（MPa） | 300-2000 | 100-600 | 200-1200 | 500-1500 | 150-400 |
| Percentage Elongation After Fracture（%） | 5-50 | 5-20 | 5-40 | 5-20 | 3-20 |
| Percentage Reduction Of Area（%） | 10-60 | 5-30 | 10-40 | 10-30 | 5-25 |
| Brinell Hardness（HBW） | 100-500 | 30-150 | 50-300 | 150-350 | 30-100 |
| Fatigue Strength（MPa） | 100-800 | 50-300 | 80-500 | 300-800 | 50-200 |
| Impact Toughness（J/cm²） | 20-200 | 10-100 | 15-150 | 10-80 | 5-50 |
Factors affecting the metal strength
The main factors that affect the metal strength are the following three aspects:
Effect of chemical component on metal strength
Adding alloying elements such as chromium, nickel, and molybdenum has a great impact on improving the strength and various other properties of steel. For example, increasing the proportion of carbon content in steel will lead to an increase in its metal strength. But at the same time, due to the increase in carbon content, its endurance and plasticity will be greatly reduced. These changes in mechanical properties are a complex process.
Effect of machining process on metal strength
Different processes also have a great impact on the metal strength of materials. Among them, the influence of machining technology on metal strength is multifaceted. Different processing methods such as grinding / polishing / cutting / grinding etc. will change the mechanical properties and metal strength of metal materials at the physical level.
Welding also affects the strength of metal materials. Because for the same part made from the exact same material, whether produced by casting, machining or welding, there will be an impact on the metal strength. In addition, normalizing/quenching/tempering and other heat treatment methods will also affect the metal strength. It mainly affects the ductility and durability of metal materials.
Effect of crystal structure on metal strength
The specific crystal structure of a metal and its associated mechanical behavior are highly dependent on factors such as elemental composition, processing history, and temperature conditions. The specific crystal structure of a metal and its associated mechanical behavior are highly dependent on factors such as elemental composition, processing history, and temperature conditions. Understanding and manipulating crystal structure is critical to tailoring the mechanical properties of metals for a variety of engineering applications.
Test method for metal strength
Common metal strength testing methods include tensile testing/hardness testing/impact testing, etc.
Yield Strength
Measurement method: Determined by tensile test, when the stress of the material no longer increases but the strain continues to increase during the stretching process. The corresponding stress is the yield strength.
Tensile Strength
Measurement method: Obtained through tensile testing. The corresponding stress value when the material breaks is the tensile strength. Fix both ends of the test rod of the metal material on the testing instrument, and slowly stretch it toward both ends. The moment the test rod is broken, the testing instrument will capture a peak value of the tensile force, and then determine the tensile strength of the metal material.
Fatigue Strength Of Metals
Measurement method: Use specialized fatigue testing equipment to conduct multiple cyclic loading measurements. By testing its durability, the service life of the corresponding product can be determined.
Hardness Strength
Metals hardness: Brinell hardness (HBW), Rockwell hardness (HRC, HRB, etc.), Vickers hardness (HV), etc. Its hardness data is determined by impact with different set strengths.
Impact Toughness Strength Of Metals
Measurement method: Measured by impact test. Charpy impact test is commonly used.
Application of high strength metal materials
In modern industry, the strength of metal materials is of vital importance, and its research and application involve multiple fields and expertise. Discuss its importance and application examples in industrial production, analyze the principles behind it, and how to increase intensity and current, provide thinking and guidance for relevant personnel, and promote development and innovation in this field.
Among all industries, there are some that have particularly high standards and requirements for metal strength. For example, the aerospace industry requires lightweight metals with good heat resistance. The construction machinery industry requires metals with higher heat resistance and even low-temperature operation. By understanding the requirements for metal strength in different industries, we can more accurately select metal materials suitable for our own industries.
Aerospace Industry
- Aircraft fuselage structural parts: In a high-altitude operating environment, the structural components of the aircraft fuselage need to be extremely durable. Based on its load-bearing requirements, the requirements for hardness are also very high.
- Engine blades: The high-temperature operating environment requires high temperature resistance and anti-oxidation properties.
Automobile Industry
- Frame and body structure: Based on the particularity of its structure, the frame and body structure need to have high tensile strength to ensure the stability of the overall structure.
- Engine parts: such as crankshafts, connecting rods, etc., require good fatigue strength and wear resistance.
Energy Field
- Wind blades: The complexity of the working environment of energy equipment requires that wind blades must have high fatigue strength and impact resistance.
- Petroleum facilities and equipment: Petroleum equipment is mainly used in drilling and exploration operations.
Machinery manufacturing field
- Mold: To withstand high pressure and friction, it requires high hardness, high strength and good thermal stability.
- Gears and transmission shafts: require high fatigue strength and wear resistance to ensure the accuracy and reliability of transmission.
Research progress of metal strength
The research and development of new alloys, the exploration of advanced manufacturing processes, and multidisciplinary research methods will bring new opportunities to improve metal strength. In the field of nanotechnology, it is expected to achieve higher strength and excellent performance by controlling the structure of metals. At the same time, theoretical research on metal strength will continue to be improved to provide more accurate guidance for practical applications.
Consult Us
Dawang Metals can help customers select the appropriate materials, manufacturing and inspection methods for their projects to achieve their desired part strength requirements. Whether you are engaged in design, manufacturing or R&D, we are willing to work with you to overcome technical problems related to metal strength and provide professional support and solutions for your projects.
