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Standard: GB/T 3077
Description: 20CrNi3 alloy steel has excellent strength, toughness and wear resistance. 20CrNi3 Alloy Steel primarily used in the manufacturing of heavy-duty components, adheres to the Chinese GB/T 3077 standard, 20CrNi3 alloy steel mainly used for Gear steel for tran...
20CrNi3 alloy steel has excellent strength, toughness and wear resistance. 20CrNi3 Alloy Steel primarily used in the manufacturing of heavy-duty components, adheres to the Chinese GB/T 3077 standard, ensuring consistent quality for industrial applications. 20CrNi3 alloy structural steel incorporates chromium and nickel, enhancing its hardenability and corrosion resistance. 20CrNi3 alloy steel mainly used for Gear steel for transmission systems, Shaft steel for industrial machinery, Forging steel for heavy-duty components, Structural steel for load-bearing parts.
20CrNi3 Structural Alloy Steel is extensively used in industries requiring durable and high-performance materials. Often referred to as 20CrNi3 structural alloy steel, it excels in applications where strength and toughness are paramount. Its ability to withstand heavy loads and resist wear makes it ideal for 20CrNi3 steel for gears, particularly in automotive and machinery sectors.
Conventional Dimensions:
- Round bars: Diameter ranging from 10mm to 300mm
- Plates: Thickness from 10mm to 200mm
- Forged blocks: Custom sizes based on requirements
The chemical composition of 20CrNi3 alloy steel plays a critical role in determining its performance.
Element | C | Si | Mn | Cr | Ni | P | S |
---|---|---|---|---|---|---|---|
Content (%) | 0.17-0.24 | 0.17-0.37 | 0.30-0.60 | 0.60-0.90 | 2.75-3.25 | ≤0.035 | ≤0.035 |
The mechanical properties of 20CrNi3 alloy steel make it suitable for high-stress applications. These properties are typically measured after heat treatment processes like quenching and tempering.
Property | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
---|---|---|---|---|
Value | ≥980 | ≥785 | ≥9 | ≤269 |
20CrNi3 Structural Alloy Steel has comparable grades in international standards, which can be used as alternatives depending on regional availability and specific requirements.
Standard | Grade |
---|---|
AISI/SAE (USA) | 4340 |
EN (Europe) | 36CrNiMo4 |
JIS (Japan) | SNCM439 |
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