C22E / 1.1151 Special Steel

FAQ Section on Materials and Their Specifications

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1. Material Specifications and Properties

What is C22E material?
C22E is a non-alloy carbon steel grade under EN 10084. It has a low carbon content (around 0.22%), making it suitable for case hardening. Its applications include shafts, gears, and lightly stressed components where good machinability is essential.

What is 1.1151 material specification?
1.1151, also known as C22, is a low-carbon steel with excellent machinability and weldability. It is primarily used for mechanical engineering components, particularly when surface hardening is required.

What is 1.1191 material specification?
1.1191, or C45, is a medium-carbon steel with good tensile strength and machinability. It is often used in applications such as automotive parts, shafts, and axles.

What is the hardness of C60 steel?
C60 steel, a high-carbon steel, has a hardness range of 200–250 HB in its normalized state. After quenching and tempering, it can achieve significantly higher hardness values, making it ideal for wear-resistant applications.

What does AISI stand for?
AISI stands for the American Iron and Steel Institute, which is a key organization in the U.S. that establishes standardized naming conventions and specifications for steel and alloys, enabling consistency and comparison across industries.

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2. Material Equivalents

What is equivalent to AISI 1151?
AISI 1151 is equivalent to EN C45E (1.1191) and JIS S45C. These equivalents have similar compositions and mechanical properties, often used interchangeably in various industries.

What is equivalent to EN 10083 material?
EN 10083 steels, used for quenched and tempered applications, have equivalents such as AISI 1045 for C45 and AISI 5140 for 41Cr4. These grades are used in components requiring high strength and toughness.

What is EN19 equivalent to AISI?
EN19, a chromium-molybdenum steel, is equivalent to AISI 4140. It is well-known for its high tensile strength and toughness, suitable for high-stress applications such as gears and shafts.

What material is S355NH made of?
S355NH is a structural steel grade composed primarily of iron with added manganese, silicon, and trace amounts of other elements. It is used in construction and structural applications due to its excellent weldability and mechanical properties.

What material is 32CrB4 made of?
32CrB4 is an alloy steel containing chromium and boron. It is designed for high wear resistance and toughness, making it suitable for heavy-duty applications such as agricultural machinery.

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3. Applications and Uses

What is C60 steel used for?
C60 steel is widely used in the manufacture of gears, crankshafts, springs, and cutting tools due to its high hardness and wear resistance after heat treatment.

What are RSJs made of?
RSJs (Rolled Steel Joists) are typically made of structural steels such as S355JR or S235JR. These steels are selected for their strength, ductility, and weldability, making them ideal for load-bearing applications in construction.

Why are Crittall windows so expensive?
Crittall windows are costly due to their high-quality galvanized steel frames, durability, and bespoke craftsmanship. Additional factors include energy-efficient glazing and the brand’s premium positioning in the market.

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4. Material Characteristics and Behavior

Is C22E weldable?
Yes, C22E is weldable, but precautions like pre-heating and post-weld heat treatment are recommended to minimize the risk of cracking and ensure good weld quality.

Is AISI 1020 mild steel?
Yes, AISI 1020 is classified as a mild steel due to its low carbon content (around 0.20%). It is known for good weldability and machinability, making it a popular choice for general-purpose applications.

Is 1020 magnetic?
Yes, AISI 1020 is magnetic because it is primarily composed of iron. This property makes it suitable for use in electromagnetic applications.

How strong is 1020 steel?
AISI 1020 steel has a tensile strength of approximately 420–550 MPa, depending on its condition (cold-rolled or hot-rolled). Its combination of strength and ductility makes it ideal for structural applications.

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5. Comparative Analysis

What cuts better than a plasma cutter?
Laser cutting and waterjet cutting are often considered superior to plasma cutting for specific applications. Laser cutting excels in precision and intricate designs, while waterjet cutting is effective for materials that cannot tolerate high temperatures.

What metals cannot be cut with a plasma cutter?
Metals that are non-conductive, such as ceramics, glass, and some plastics, cannot be cut with a plasma cutter because the process relies on electrical conductivity to generate the plasma arc.

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6. Challenges and Limitations

What are the disadvantages of plasma cutting?
Plasma cutting can produce a rough edge compared to laser cutting, and it struggles with cutting very thick materials. Additionally, it generates high levels of noise and fumes, requiring proper ventilation and safety precautions.

What is a big disadvantage of ultrasonic welders?
Ultrasonic welding is limited to thermoplastics and certain metals with good acoustic conductivity. It is unsuitable for thicker materials and may require precise joint preparation for effective bonding.