| Model: | 40CrNiMo |
|---|---|
| Brand: | 4340 |
| Origin: | Made In China |
| Category: | Metallurgy , Mining & Energy / Metallurgy & Mining / Bars, Rods, Angles, and Stainless Steel Shapes |
| Label: | - |
| Price: |
US $2
/ KGS
|
| Min. Order: | 10 KGS |
| Last Online:13 Sep, 2022 |
1.Chemical composition :
|
Carbon |
0.38 - 0.43 |
|
Chromium |
0.7 - 0.9 |
|
Iron |
Balance |
|
Manganese |
0.6 - 0.8 |
|
Molybdenum |
0.2 - 0.3 |
|
Nickel |
1.65 - 2 |
|
Phosphorus |
0.035 max |
|
Silicon |
0.15 - 0.3 |
|
Sulphur |
0.04 max |
3.Dlivery condition: hot rolled, annealing ton ≤ HB269
4.Surface conditions : scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement
5. Mechanical Properites :
|
tensile strength σb (MPa) |
min 980(100) |
|
elongation δ5 (%) |
min 12 |
|
reduction of areaψ (%) |
min 55 |
|
impact absorbed energy Akv (J) |
min 78 |
|
notched bar impact strength αkv(J/cm2) |
min98(10) |
|
yield point σs (MPa) |
min835(85) |
6. Applications: Used for manufacture big sized important Quenched-and-Tempered parts which request good toughness and high strength.such as top load shaft in heavy-duty machinery;
For steam turbine shaft, vane, and heavy-load transmission parts, fastening piece, crankshaft, gears etc. with diameter is biger than 250mm.
7.Physical Data
|
Density (lb / cu. in.) |
0.28 |
|
Specific Gravity |
7.8 |
|
Specific Heat (Btu/lb/Deg F - [32-212 Deg F]) |
0.116 |
|
Melting Point (Deg F) |
2600 |
|
Thermal Conductivity |
21 |
|
Mean Coeff Thermal Expansion |
6.6 |
|
Modulus of Elasticity Tension |
33 |
