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45crnimov/40CrNiMo Hot rolled alloy steel bar 1.6511 E4340

Model No.︰40CrNiMo
Brand Name︰4340
Country of Origin︰China
Unit Price︰US $ 2 / KGS
Minimum Order︰10 KGS
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Product Description

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

 

Product Image


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