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18Cr2Ni4WA
18Cr2Ni4WA gear steel bar is a kind of structural alloy steel bar under the standard GB/T 3077-1988. 18Cr2Ni4WA steel alloy carburizing steel is commonly used and it has high strength,toughness and good hardenability. 18Cr2Ni4WA can also be used in not carburizing and using the qualitative case and it is generally used for important parts with larger cross section, high load and good toughness and low notch sensitivity.
18Cr2Ni4WA Chemical composition %:
|
Grade |
Chemical composition %: |
||||||||
|
C |
Si |
Mn |
S |
P |
Cr |
Ni |
Cu |
W |
|
|
18Cr2Ni4WA |
0.13-0.19 |
0.17-0.37 |
0.30-0.60 |
≤0.025 |
≤0.025 |
1.35-1.65 |
4.0-4.5 |
≤0.025 |
0.80-1.20 |
18Cr2Ni4WA mechanical properties:
|
Grade |
Mechanical properties: |
||||||
|
Tensile strength σb |
Yield strength σs |
Elongation δ5/（%） |
Percentage reduction of areaψ (%) |
Impact AKv(J)
|
Notched bar impact strengthαkv (J/cm²)
|
Hardness |
|
|
min |
min |
min |
min |
min |
min |
max |
|
|
18Cr2Ni4WA |
1175(120) |
1029(105) |
10 |
45 |
78 |
98(10) |
269 |
18Cr2Ni4WA gear steel bar Notes:
1,18Cr2Ni4WA specification: DIA 80-1200mm(forged round bar), 80-1200mm(square bar) Length 3-16 meters
2, 18Cr2Ni4WA heat treatment: Quenching,Annealing,Normalizing and Tempering.
3, 18Cr2Ni4WA tolerance: 0-+3mm(DIA), 0-+10mm(Length)
Our company, Bebon international can produce all sizes of 18Cr2Ni4WA forged steel round bar, 18Cr2Ni4WA forged square bar, 18Cr2Ni4WA forged shafts and 18Cr2Ni4WA forged blocks.