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Shanghai Jingteng Metal Group Co., Ltd.

   
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SNC815 AISI 3125 Alloy Steel

SNC815 AISI 3125 Alloy Steel

SNC815 AISI 3125 Alloy Steel

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SNC815 AISI 3125 Alloy Steel




Material Name


Material Name: SNC815 AISI 3125
Execution standard: JIS G4053-2003

Characteristics and scope of application


It is the wider use of the senior carburizing steel, and compared to 15Cr, 20Cr steel, the strength, plasticity and hardenability were high. Mainly used to produce high strength requirements under the condition of heavy load, high hardness and high toughness of spindle and center toughness is high or withstand the impact load, surface abrasion resistance, thermal and deformation small shaft, rod and under high speed and impact load work of all kinds of transmission gear, adjusting screw camshaft


Chemical Composition


C Si Mn S P Cr Ni Cu
0.12～0.18 0.15～0.35 0.35～0.65 Below 0.030 Below 0.030
 0.60～1.00 3.00～3.50 Below 0.030

Mechanical Property


Tensile strength
σb (MPa) 		Yield Strength
σs 0.2 (MPa)
Elongation
δ 5 (％)
reduction of crosssection area
ψ (％)
 ballistic work
Akv (J) 		pounding toughness value
αkv (J/cm2)
Hardness
(HB)
specimen size
Above 930 Above 685 Above 11 Above 50
 Above 71
 Above 88
   Below 217 15mm

specification of heat treatment and metallurgical structure


Specification of heat treatment : hardening: 860℃ for the first time, 780℃ for the second time, oil cooling, oil cooling; tempering 200℃, water cooling, air cooling.

Delivery State


Heat treatment (normalizing, annealing or high temperature tempering) or non heat treatment state of delivery, the delivery state should be indicated in the contract.