Osprey Guy
09-18-2003, 06:38 PM
There's a new member from Turkey over in Newbies who's trying to find heat treat recommendations for a steel we don't see in the USA. I figured maybe this forum might be better suited for the question. Here's a copy of his post and available specs. Anyone got any ideas?
Dennis
can anyone look at these and find clues of heat treating a knife of this steel?
50crv4
Category Type Functional unit
Metals ferro Steel (high grade) kg
--------------------------------------------------------------------------------
Property Min Max Unit
Price
Young's modulus 210000 210000 MPa
Shear modulus
Tensile strength 1100 1300 MPa
Elongation 10 10 %
Compressive strength
Creep strength
Fatigue
Bending strength
Hardness 57 62 Rockwell
Impact strength
Yield strength 900 900 MPa
Thermal expansion 12.3 12.3 e-6/K
Thermal conductivity 50 50 W/m.K
Specific heat 500 500 J/kg.K
Melting temperature 1540 1540 ?C
Glass temperature
Service temperature
Density 7830 7830 kg/m?
Resistivity 0.23 0.23 Ohm.mm?/m
Breakdown potential
Electrochemical potential -0.45 -0.45 V
Dielectric loss factor
Friction coefficient
Refraction index
Thickness
Shrinkage
Water absorption
Remarks
(Fe rest, C 0.47-0.55, Cr 0.80-1.20,V 0.07-0.20, Si 0.17-0.37, Mn 0.50-0.80, S <0.040, P <0.040 (wt.%))
50CRV4 - This is a steel with very small amounts of Vandium and Chromium. Chromium in higher quantities lends to a steel's "stainless" properties. However, in 50CRV, there isn't enough to make it "stainless" - and metallurgically brittle. Thus it makes a good spring steel. It contains trace amounts of Silicon and Manganese. The tensile strength is equeled to CK55 and CK50 is about 600 N/mm2, while 50CRV4 ranks about 750 N/mm2.
Dennis
can anyone look at these and find clues of heat treating a knife of this steel?
50crv4
Category Type Functional unit
Metals ferro Steel (high grade) kg
--------------------------------------------------------------------------------
Property Min Max Unit
Price
Young's modulus 210000 210000 MPa
Shear modulus
Tensile strength 1100 1300 MPa
Elongation 10 10 %
Compressive strength
Creep strength
Fatigue
Bending strength
Hardness 57 62 Rockwell
Impact strength
Yield strength 900 900 MPa
Thermal expansion 12.3 12.3 e-6/K
Thermal conductivity 50 50 W/m.K
Specific heat 500 500 J/kg.K
Melting temperature 1540 1540 ?C
Glass temperature
Service temperature
Density 7830 7830 kg/m?
Resistivity 0.23 0.23 Ohm.mm?/m
Breakdown potential
Electrochemical potential -0.45 -0.45 V
Dielectric loss factor
Friction coefficient
Refraction index
Thickness
Shrinkage
Water absorption
Remarks
(Fe rest, C 0.47-0.55, Cr 0.80-1.20,V 0.07-0.20, Si 0.17-0.37, Mn 0.50-0.80, S <0.040, P <0.040 (wt.%))
50CRV4 - This is a steel with very small amounts of Vandium and Chromium. Chromium in higher quantities lends to a steel's "stainless" properties. However, in 50CRV, there isn't enough to make it "stainless" - and metallurgically brittle. Thus it makes a good spring steel. It contains trace amounts of Silicon and Manganese. The tensile strength is equeled to CK55 and CK50 is about 600 N/mm2, while 50CRV4 ranks about 750 N/mm2.