SCM415 & SCM415H: Steel Alloy
* Standard: JIS G4105-1979
* Equivalent Grades: GB 15CrMo, JIS SCM415, SCM415H, DIN 15CrMo5.
With surface are processed through carburizing hardening treatment are used for the parts which need high toughness or wear resistance, such as cylinder piston, crankshaft, gears, pin, shafts and so on.
* Shapes : Round, Hexagon, Flat, Square, Profile.
* Surface Finish : Cold drawn, Hot rolled, Bright, Polished, Centerless Grinding (CG), Chamfered.
* Available size range :
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Bar |
|
ØRound bars Cold drawn : 2mm ~ 55mm Hot Rlooed : 32mm ~ 90mm ØSquare bars : 3mm ~ 45mm ØFlat Bar : 3mm ~ 65mm ØHexagonal bars : 3mm ~ 50mm |
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· Available Length : 2meter ~ 5.8 meter |
* Chemical Composition :
SCM415
SCM415H
* Mechanical properties
Tensile strength (kgf/mm²): ≧85
Elongation (%): ≧16
Cross section reduction rate (%): ≧40
Impact value (J/cm2): ≧7
Hardness (Hb) : 235~321
Conditions of heat treatment
Annealing: 850℃ Furnace Cooling
Normalization: 850~900℃ Air Cooling
Hardening: 850~900℃ 1st Oil Cooling, 800~850℃ 2rd Oil Cooling
Tempering: 150~200℃ Air Cooling
Criterion for heat treating conditions revise:
Ac: 770~835℃
Ar: 770~700℃
Ms: 410℃
