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1340 AISI steel

 

 1340 AISI steel

 1340 AISI steel is a kind of alloy steel.

Alloy steels comprise a wide variety of steels which have compositions that exceed the limitations of C, Mn, Ni, Mo, Cr, Va, Si, and B which have been set for carbon steels.
However, steels containing more than 3.99% chromium are classified differently as stainless and tool steels.
Alloy steels are always killed, but can use unique deoxidization or melting processes for specific applications.
Alloy steels are generally more responsive to heat and mechanical treatments than carbon steels.
Typically, alloy steels are designated by distinct AISI (American Iron and Steel Institute) four-digit numbers.
The first two digits indicate the leading alloying elements, while the last two digits give the nominal carbon content of the alloy in hundredths of a percent.
Occasionally we see five-digit designations where the last three digits tell that the carbon is actually over 1%.

 

1340 AISI steel mechanical property:

Properties Conditions
T (°C) Treatment
Density (×1000 kg/m3) 7.7-8.03 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 190-210 25  
Tensile Strength (Mpa) 703.3 25 annealed at 800°C
Yield Strength (Mpa) 436.4
Elongation (%) 25.5
Reduction in Area (%) 57.3
Hardness (HB) 207 25 annealed at 800°C
Impact Strength (J)
(Izod)
70.5 25 annealed at 800°C

 

1340 AISI steel chemical composition:

Element Weight %
C 0.38-0.43
Mn 1.60-1.90
P 0.035 (max)
S 0.04 (max)
Si 0.15-0.30

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