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1.6582 (34CrNiMo6) Quenched Steel
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1.7225 QT (42CrMo4) Quenched Steel

1.7225 (42CrMo4) Quenched Steel

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Description

1.7225 (42CrMo4) quenched steel is a low-alloy steel that has been heat-treated to improve its mechanical properties. It contains chromium and molybdenum, which provide good strength, wear resistance, and toughness. The term “quenched” refers to a specific heat treatment process where the steel is heated to a high temperature and then rapidly cooled, typically in water or oil. This process creates a hard and brittle structure in the steel, which is then tempered to improve its toughness and ductility.

1.7225 (42CrMo4) quenched steel is often used in high-stress applications where strength and toughness are critical, such as in gears, crankshafts, and connecting rods in the automotive and aerospace industries. It is also used in machinery and equipment for the oil and gas industry, as well as in construction equipment and mining machinery.

Overall, 1.7225 (42CrMo4) quenched steel is a versatile and widely used material with excellent mechanical properties that can be tailored to meet the specific needs of different applications through appropriate heat treatment processes.

Application Areas

Application Areas

1.7225 (42CrMo4) quenched steel is commonly used in high-stress applications that require good strength, wear resistance, and toughness. Some of its application areas include:

Automotive and aerospace industries: 1.7225 (42CrMo4) steel is often used in the manufacturing of gears, crankshafts, and connecting rods in high-performance engines and transmissions, where strength, durability, and wear resistance are critical.

Machinery and equipment for the oil and gas industry: 1.7225 (42CrMo4) steel is used in components such as pumps, valves, and drilling equipment that operate in high-stress and corrosive environments.

Construction equipment: 1.7225 (42CrMo4) steel is used in components such as hydraulic cylinders, excavator arms, and booms that require high strength and toughness.

Mining machinery: 1.7225 (42CrMo4) steel is used in components such as drill bits, conveyor chains, and rock crushers that are subjected to high stress and wear.

Overall, 1.7225 (42CrMo4) quenched steel is a versatile material that finds applications in a wide range of industries where high strength, wear resistance, and toughness are critical.

Technical Details

Technical Details

CHEMICAL COMPOSITION

Element Composition (%)
C 0.38 – 0.45
Si 0.40 max
Mn 0.60 – 0.90
P 0.025 max
S 0.035 max
Cr 0.90 – 1.20
Mo 0.15 – 0.30

Note: This is a typical composition range and may vary depending on the manufacturing process and supplier.

HEAT TREATMENT

Heat Treatment Process Temperature Range Cooling Method
Annealing 650-700°C Furnace, air
Normalizing 840-880°C Furnace, air
Hardening 820-870°C Oil or water
Tempering 540-680°C Air, oil or water

Note: The specific heat treatment process and parameters may vary depending on the desired properties and the intended application of the material.

MECHANICAL PROPERTIES

Property Value
Tensile strength (MPa) 900-1200
Yield strength (MPa) 650-900
Elongation (%) 12-14
Reduction in area (%) 40-50
Modulus of elasticity (GPa) 190-210
Hardness (HRC) 30-36

Note: The above values are typical and may vary depending on the specific manufacturing process, heat treatment, and testing conditions.

PHYSICAL PROPERTIES

Property Value
Density 7.85 g/cm³
Thermal expansion 11.7 µm/m°C
Thermal conductivity 42.6 W/mK
Specific heat 460 J/kg·K
Electrical resistivity 0.22 µΩ·m

Note: The above values are typical and may vary depending on the specific manufacturing process and testing conditions.