Specification :

High quality carbon structural steel: S45C
* characteristic and applicable scope:
Is the intensity high one kind of carbon fine steel, because the hardenability is bad, generally by the hot condition use, when the mechanical property request is high, uses the quenching and retempering treatment. Cold-work plasticity medium, annealing and hot cutting workability compared to quenching and tempering good. Uses in making the intensity request high components, like gear, axis, piston pin and so on and stress not very big mechanical job, forging, pressing part and bolt, nut, pipe joint
* chemical composition:
Carbon C: 0.42~ 0.50
Silicon Si: 0.17~ 0.37
Manganese Mn: 0.50~ 0.80
Sulfur S: d0.035
Phosphorus P: d0.035
Chromium Cr: d0.25
Nickel Ni: d0.25
Copper Cu: d0.25
* mechanical properties:
Tensile strength à b ( MPa) : e600( 61)
Yield strength às ( MPa) : e355( 36)
Elongation ratio ´ 5 ( % ) : e16
Reduction of area Psi ( % ) : e40
Impact merit Akv ( J) : e39
Resilient value ± kv ( J/ cm2) : e49( 5)
Degree of hardness: Not heat treatment, d229HB; Annealed steel, d197HB
Test specimen size: The test specimen size is 25mm
* heat treatment regime and Microstructure:
Heat treatment regime: Hot, 850 ; Quenching, 840 ; Tempering, 600 .