Chemical composition and mechanical properties of 40CrNiMoA
2025-09-16 11:37:10
40CrNiMoA Chemical Composition and Mechanical Properties, Main Applications
40CrNiMoA
40CrNiMoA is a type of alloy structural steel, commonly referred to as "combined steel" or "alloy steel." It is developed from high-quality carbon structural steel by adding one or more alloying elements, with the total content of these elements not exceeding 5%. This steel grade is widely used in engineering applications where high strength and toughness are required.
The standard followed for this material is GB/T 3077-1999.
Uniform Number: A50403;
Grade: 40CrNiMoA;
Chemical Composition (%):
Carbon (C): 0.37–0.44
Silicon (Si): 0.17–0.37
Manganese (Mn): 0.50–0.80
Sulfur (S): ≤0.025
Phosphorus (P): ≤0.025
Chromium (Cr): 0.60–0.90
Nickel (Ni): 1.25–1.65
Copper (Cu): ≤0.025
Molybdenum (Mo): 0.15–0.25
â—Mechanical Properties:
Tensile Strength (σb): ≥ 980 MPa (100)
Yield Strength (σs): ≥ 835 MPa (85)
Elongation (δ5): ≥12%
Reduction of Area (ψ): ≥55%
Impact Work (Akv): ≥78 J
Impact Toughness (αkv): ≥98 J/cm² (10)
Sample Size: 25mm
Heat Treatment: Quenching at 850°C, cooled with oil; Tempering at 600°C, cooled with water or oil.
Annealing or High-Temperature Tempering: Brinell Hardness (GBW) ≤ 269
Delivery Condition: Available in heat-treated (normalized, annealed, or high-temperature tempered) or non-heat-treated condition. The delivery condition should be specified in the contract.
Applications: 40CrNiMoA is commonly used for high-strength, high-toughness parts with large cross-sections that require quenching. Examples include the horizontal eccentric shafts of forging machines and forging presses.
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Source: http://news.chinawj.com.cn
Editor: Hardware Business Network Information Center
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(Word count: 512)
40CrNiMoA
40CrNiMoA is a type of alloy structural steel, commonly referred to as "combined steel" or "alloy steel." It is developed from high-quality carbon structural steel by adding one or more alloying elements, with the total content of these elements not exceeding 5%. This steel grade is widely used in engineering applications where high strength and toughness are required.
The standard followed for this material is GB/T 3077-1999.
Uniform Number: A50403;
Grade: 40CrNiMoA;
Chemical Composition (%):
Carbon (C): 0.37–0.44
Silicon (Si): 0.17–0.37
Manganese (Mn): 0.50–0.80
Sulfur (S): ≤0.025
Phosphorus (P): ≤0.025
Chromium (Cr): 0.60–0.90
Nickel (Ni): 1.25–1.65
Copper (Cu): ≤0.025
Molybdenum (Mo): 0.15–0.25
â—Mechanical Properties:
Tensile Strength (σb): ≥ 980 MPa (100)
Yield Strength (σs): ≥ 835 MPa (85)
Elongation (δ5): ≥12%
Reduction of Area (ψ): ≥55%
Impact Work (Akv): ≥78 J
Impact Toughness (αkv): ≥98 J/cm² (10)
Sample Size: 25mm
Heat Treatment: Quenching at 850°C, cooled with oil; Tempering at 600°C, cooled with water or oil.
Annealing or High-Temperature Tempering: Brinell Hardness (GBW) ≤ 269
Delivery Condition: Available in heat-treated (normalized, annealed, or high-temperature tempered) or non-heat-treated condition. The delivery condition should be specified in the contract.
Applications: 40CrNiMoA is commonly used for high-strength, high-toughness parts with large cross-sections that require quenching. Examples include the horizontal eccentric shafts of forging machines and forging presses.
Image:
Source: http://news.chinawj.com.cn
Editor: Hardware Business Network Information Center
Image:
(Word count: 512)Aluminum external opening door refers to a door that opens outward with aluminum alloy as the main material, and has the following characteristics:
Advantages:
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