40CrNiMoA Steel Round Bar
40CrNiMoA round steel, 40CrNiMoA composite steel, 40CrNiMoA steel, alloy structural steel referred to as composite steel, 40CrNiMoA is one of the composite steel, also known as alloy steel, it is based on high-quality carbon structural steel, appropriately added A type of steel made of one or several alloying elements (the total content does not exceed 5%). Common quality defects of bearing parts after heat treatment include: overheating, underheating, quenching cracks, insufficient hardness, heat treatment deformation, surface decarburization, soft spots, etc.
40CrNiMoA round metal bar chemical composition
| C(％) | P(％) | S(％) | ||||||
|---|---|---|---|---|---|---|---|---|
| 0.37-0.4 | 0.17 ~ 0.37 | 0.50 ~ 0.80 | Less than or equal to 0.025 | Less than or equal to 0.025 | 0.60-0.90 | 1.25 ~ 1.65 | Less than or equal to 0.25 | 0.15 ~ 0.25 |
40CrNiMoA round rod mechanical property
Rp0.2 |
Rm |
A(%) |
||||
|---|---|---|---|---|---|---|
| Greater than or equal to 835(85) | Greater than or equal to 980(100) | Greater than or equal to 78 |
Greater than or equal to 12 |
Greater than or equal to 98(10) | Greater than or equal to 55 | Less than or equal to 269 HBW |
40CrNiMoA round stock metal product application
It is used for quenching and tempering parts that require high strength, high toughness, large cross-section size, and more important parts, such as the transmission eccentric shaft of a horizontal forging machine, the crankshaft of a forging press, etc. It is used after quenching and tempering to make important parts that require good plasticity, high strength and large size. If there are high-load shafts in heavy machinery, turbine shafts with a diameter greater than 250mm, blades, high-load transmission parts, fasteners, crankshafts, gears, etc. In addition, it can also be used to make important parts with special performance requirements after nitriding treatment.
40CrNiMoA solid round bar product image
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